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Taxon author: Sw.

ITIS records citing taxon author "Sw."
 
 Kingdom Animalia
  Abalistes macrophthalmus (Swainson, 1839) -- invalid
  Abramis gangeticus Swainson, 1839 -- invalid
  Abroscopus albogularis fulvifacies (Swinhoe, 1870) -- valid
  Acanthaspis celidota Swanson, 2017 -- valid
  Acanthidium Michener & Griswold, 1994 -- invalid
  Acanthidium batrae Michener & Griswold, 1994 -- invalid
  Acanthobothrium longipedunculata Uma Maheswari, Vijaya Lakshmi & Hanumantha Rao, 1985 -- valid
  Acanthobothrium waltairensis Uma Maheswari, Sanaka, Vijaya Lakshmi & Hanumantha Rao, 1987 -- valid
  Acanthomacrostomum Papi and Swedmark, 1959 -- valid
  Acanthomacrostomum spiculiferum Papi and Swedmark, 1959 -- valid
  Accipiter gentilis fujiyamae (Swann & Hartert, 1923) -- valid
  Achaetobonellia ricei Biseswar, 2005 -- valid
  Achatinella Swainson, 1828 -- valid
  Acrocephalus bistrigiceps Swinhoe, 1860 -- valid -- Black-browed Reed Warbler
  Acrocephalus concinens (Swinhoe, 1870) -- valid -- Blunt-winged Warbler
  Acrocephalus concinens concinens (Swinhoe, 1870) -- valid
  Acrocephalus sorghophilus (Swinhoe, 1863) -- valid -- Speckled Reed Warbler
  Actenoides monachus capucinus (A. B. Meyer & Wiglesworth, 1896) -- valid
  Actinodactyla Haswell, 1893 -- invalid
  Actinodactylella Haswell, 1893 -- valid
  Actinodactylella blanchardi Haswell, 1893 -- valid
  Actinulida Swedmark and Teissier, 1958 -- valid
  Acuminocythere Swain and Gilby, 1974 -- valid
  Acuminocythere crescentensis Swain and Gilby, 1974 -- valid
  Aega cyclops Haswell, 1882 -- valid
  Aega vigilans (Haswell, 1881) -- valid
  Aegialites dealbatus Swinhoe, 1870 -- invalid
  Aeglia Swainson, 1840 -- invalid
  Aethopyga christinae Swinhoe, 1869 -- valid -- Fork-tailed Sunbird
  Aethopyga christinae christinae Swinhoe, 1869 -- valid
  Afrilobus Griswold & Platnick, 1987 -- valid
  Afrilobus australis Griswold & Platnick, 1987 -- valid
  Afrilobus capensis Griswold & Platnick, 1987 -- valid
  Afrilobus jocquei Griswold & Platnick, 1987 -- valid
  Agroeca gangotrae Biswas & Roy, 2008 -- valid
  Agrotis bryani (Swezey, 1926) -- valid
  Agrotis giffardi (Swezey, 1932) -- valid
  Agrotis kerri (Swezey, 1920) -- valid
  Aimophila Swainson, 1837 -- valid -- Aimophila Sparrows
  Aimophila rufescens (Swainson, 1827) -- valid -- Rusty Sparrow, Zacatonero rojizo
  Aimophila rufescens rufescens (Swainson, 1827) -- valid
  Alaranea Griswold, 1997 -- valid
  Alaranea alba Griswold, 1997 -- valid
  Alaranea ardua Griswold, 1997 -- valid
  Alaranea betsileo Griswold, 1997 -- valid
  Alaranea merina Griswold, 1997 -- valid
  Alauda arvensis intermedia Swinhoe, 1863 -- valid
  Alauda arvensis pekinensis Swinhoe, 1863 -- valid
  Alauda gulgula coelivox Swinhoe, 1859 -- valid
  Alauda gulgula sala Swinhoe, 1870 -- valid
  Alauda gulgula wattersi Swinhoe, 1871 -- valid
  Alcedo semitorquata Swainson, 1823 -- valid -- Half-collared Kingfisher
  Alcippe morrisonia Swinhoe, 1863 -- valid -- Grey-cheeked Fulvetta
  Alectoris chukar pubescens (Swinhoe, 1871) -- valid
  Alepes Swainson, 1839 -- valid
  Alepes melanoptera (Swainson, 1839) -- valid -- shortfinned trevally
  Alloteleia bengalensis Saraswat, 1978 -- valid
  Alloxaea Ascher, Engel and Griswold, 2006 -- valid
  Alloxaea brevipalpis (Ascher, Engel and Griswold, 2006) -- valid
  Alniphagus Swaine, 1918 -- valid
  Alophoixus pallidus (Swinhoe, 1870) -- valid
  Alophoixus pallidus pallidus (Swinhoe, 1870) -- valid
  Amadina Swainson, 1827 -- valid
  Amaryllis Haswell, 1880 -- invalid
  Amaryllis Haswell, 1880 -- valid
  Amaryllis macrophthalmus Haswell, 1880 -- valid
  Amaurornis flavirostra (Swainson, 1837) -- valid -- Black Crake
  Ambohima Griswold, 1990 -- valid
  Ambohima pauliani Griswold, 1990 -- valid
  Ambohima sublima Griswold, 1990 -- valid
  Ammodramus Swainson, 1827 -- valid -- Grassland Sparrows
  Ammodramus savannarum bimaculatus Swainson, 1827 -- valid
  Amphichthys Swainson, 1839 -- valid
  Amphichthys rubigenis Swainson, 1839 -- valid
  Amphiscolops australis (Haswell, 1905) -- invalid
  Anacanthobatidae von Bonde and Swart, 1924 -- valid -- leg skates
  Anacanthobatis von Bonde and Swart, 1923 -- valid -- smooth leg skate
  Anacanthobatis marmoratus von Bonde and Swart, 1923 -- valid
  Anacassis nigroscutata Swietojanska, 2003 -- valid
  Anarthrura linearis (Haswell, 1884) -- invalid
  Anas poecilorhyncha zonorhyncha Swinhoe, 1866 -- valid
  Anas zonorhyncha Swinhoe, 1866 -- invalid -- Eastern Spot-billed Duck
  Anatolichthys Kosswig and Sözer, 1945 -- invalid
  Anchovia clupeoides (Swainson, 1839) -- valid -- anchoveta sardina, hachudo, zabaleta anchovy
  Anchoviella eurystole (Swain and Meek, 1884) -- invalid
  Ancilla tankervillii (Swainson, 1825) -- valid
  Andrena anatolis Linsley and MacSwain, 1961 -- valid
  Andrena anatolis matutina Linsley and MacSwain, 1961 -- invalid
  Andrena anograe knowltoni Linsley and MacSwain, 1961 -- invalid
  Andrena apasta Linsley and MacSwain, 1961 -- valid
  Andrena boronensis Linsley and MacSwain, 1962 -- valid
  Andrena camissoniae Linsley and MacSwain, 1968 -- valid
  Andrena chlorosoma Linsley and MacSwain, 1961 -- valid
  Andrena chylismiae Linsley and MacSwain, 1961 -- valid
  Andrena convallaria Linsley and MacSwain, 1963 -- invalid
  Andrena convallaria convallaria Linsley and MacSwain, 1963 -- invalid
  Andrena convallaria subhyalina Linsley and MacSwain, 1963 -- invalid
  Andrena eothina Linsley and MacSwain, 1961 -- valid
  Andrena eulobi Linsley and MacSwain, 1963 -- invalid
  Andrena evoluta Linsley and MacSwain, 1961 -- valid
  Andrena furva Linsley and MacSwain, 1961 -- valid
  Andrena mojavensis Linsley and MacSwain, 1955 -- valid
  Andrena nevadae Linsley and MacSwain, 1961 -- valid
  Andrena omnigra clarkiae Linsley and MacSwain, 1961 -- invalid
  Andrena omninigra clarkiae Linsley and MacSwain, 1961 -- invalid
  Andrena oraria Linsley and MacSwain, 1963 -- invalid
  Andrena oraria actitis Linsley and MacSwain, 1963 -- invalid
  Andrena oraria oraria Linsley and MacSwain, 1963 -- invalid
  Andrena raveni Linsley and MacSwain, 1961 -- valid
  Andrena rozeni Linsley and MacSwain, 1955 -- valid
  Andrena stagei Linsley and MacSwain, 1962 -- valid
  Andrena subchalybea chlorosoma Linsley and MacSwain, 1961 -- invalid
  Andrena thorpi Linsley and MacSwain, 1962 -- invalid
  Andrena vespertina Linsley and MacSwain, 1961 -- valid
  Andropadus Swainson, 1832 -- valid
  Anelassorhynchus gangae Biseswar, 1984 -- valid
  Anodon areolatus Swainson, 1829 -- invalid
  Anodon crassus Swainson, 1823 -- invalid
  Anodon elongatus Swainson, 1823 -- invalid
  Anodon ovata Swainson, 1841 -- invalid
  Anodon purpurascens Swainson, 1823 -- invalid
  Anodon rotundatus Swainson, 1841 -- invalid
  Anodon rugosus Swainson, 1822 -- invalid
  Anodontites elongata (Swainson, 1823) -- valid
  Anomalocoelus Haswell, 1905 -- invalid
  Anomalocoelus caecus Haswell, 1905 -- invalid
  Anostomus gronovii (Swainson, 1839) -- invalid
  Anser anser rubrirostris Swinhoe, 1871 -- valid
  Anser fabalis serrirostris Swinhoe, 1871 -- valid
  Anthidiellum butarsis Griswold, 2001 -- valid
  Anthidiellum krombeini Griswold, 2001 -- valid
  Anthidium clypeodentatum Swenk, 1914 -- valid
  Anthidium utahense Swenk, 1914 -- valid
  Anthracothorax recurvirostris (Swainson, 1822) -- valid
  Anthreptes Swainson, 1832 -- valid
  Anthus australis bistriatus (Swainson, 1838) -- valid
  Anthus gustavi Swinhoe, 1863 -- valid -- Pechora Pipit
  Anthus gustavi gustavi Swinhoe, 1863 -- valid
  Anthus spinoletta blakistoni Swinhoe, 1863 -- valid
  Antinoe ascidiicola Haswell, 1883 -- valid
  Apalis Swainson, 1833 -- valid
  Apaloderma Swainson, 1833 -- valid
  Aphanius splendens (Kosswig and Sözer, 1945) -- valid
  Aphelocoma californica oocleptica Swarth, 1918 -- valid
  Aphelocoma coerulescens oocleptica Swarth, 1918 -- invalid
  Aphthonetus sideroxyloni Swezey, 1932 -- invalid
  Apobletes bengalensis Chakraborty and Biswas, 1995 -- valid
  Apseudes australis Haswell, 1882 -- invalid
  Apseudes obtusifrons Haswell, 1882 -- invalid
  Apus apus pekinensis (Swinhoe, 1870) -- valid
  Araneus polydentatus Yin, Griswold & Xu, 2007 -- valid
  Aratinga pertinax chrysophrys (Swainson, 1838) -- valid
  Arborophila crudigularis (Swinhoe, 1864) -- valid -- Taiwan Hill Partridge, Taiwan Partridge
  Arca zebra (Swainson, 1833) -- valid -- turkey wing
  Archaeodictyna ulova Griswold & Meikle-Griswold, 1987 -- valid
  Archoleptoneta gertschi Ledford & Griswold, 2010 -- valid
  Arcitalitrus sylvaticus (Haswell, 1879) -- valid
  Arcturus brevicornis Haswell, 1882 -- valid
  Arenopontia secunda (Krishnaswamy, 1957) -- valid
  Argynnina Swainson, 1833 -- valid
  Argynnini Swainson, 1833 -- valid
  Argyrops Swainson, 1839 -- valid
  Ariosoma Swainson, 1838 -- valid
  Ariosoma acuta (Swainson, 1839) -- invalid
  Armadillidium subdentatum Haswell, 1882 -- valid
  Armorhydra Swedmark and Teissier, 1958 -- valid
  Armorhydra janowiczi Swedmark and Teissier, 1958 -- valid
  Armorhydridae Swedmark and Teissier, 1958 -- valid
  Arremon flavirostris Swainson, 1838 -- valid -- Saffron-billed Sparrow
  Arremon flavirostris flavirostris Swainson, 1838 -- valid
  Arremon semitorquatus Swainson, 1838 -- valid -- Half-collared Sparrow
  Asellopsis chappuisius Krishnaswamy, 1957 -- valid
  Asemonea santinagarensis (Biswas & Biswas, 1992) -- valid
  Ashmeadiella chumashae Griswold, 1985 -- valid
  Aspidimorpha bataviana Swietojanska, 2001 -- valid
  Aspidimorpha luzonica Swietojanska, 2001 -- valid
  Aspidimorpha snizeki Swietojanska, 2001 -- valid
  Aspidimorpha sulawesica Swietojanska, 2001 -- valid
  Aspidimorpha tamdaoensis Swietojanska, 2001 -- valid
  Aspidimorpha tibetana Swietojanska and Borowiec, 2006 -- valid
  Aspidimorpha timorensis Swietojanska, 2001 -- valid
  Aspidophoreta Haswell, 1880 -- invalid
  Aspidoscopulia Reiswig, 2002 -- valid
  Astele Swainson, 1855 -- valid
  Astronotus Swainson, 1839 -- valid -- oscars
  Athene cunicularia troglodytes (Wetmore & Swales, 1931) -- valid
  Athene noctua plumipes Swinhoe, 1870 -- valid
  Athene pardalota Swinhoe, 1863 -- invalid
  Athene plumipes Swinhoe, 1870 -- invalid
  Atheta brunswickensis Klimaszewski in Klimaszewski, Sweeney, Price and Pelletier, 2005 -- valid
  Atheta capsularis Klimaszewski in Klimaszewski, Sweeney, Price and Pelletier, 2005 -- valid
  Atheta pseudocrenuliventris Klimaszewski in Klimaszewski, Sweeney, Price and Pelletier, 2005 -- valid
  Atimastillas flavicollis (Swainson, 1837) -- valid -- Yellow-throated Leaflove
  Atimastillas flavicollis flavicollis (Swainson, 1837) -- valid
  Aulacorhynchus sulcatus (Swainson, 1820) -- valid -- Groove-billed Toucanet
  Aulacorhynchus sulcatus sulcatus (Swainson, 1820) -- valid
  Aulocalycoida Tabachnick & Reiswig, 2000 -- valid
  Aurila laeviculoidea Swain and Gilby, 1974 -- valid
  Austrostelis Michener & Griswold, 1994 -- valid
  Aviceda Swainson, 1836 -- valid
  Aviceda cuculoides Swainson, 1837 -- valid -- African Cuckoo-Hawk
  Aviceda cuculoides batesi (Swann, 1920) -- valid
  Aviceda cuculoides cuculoides Swainson, 1837 -- valid
  Avocettula recurvirostris (Swainson, 1822) -- invalid
  Azanialobus Griswold & Platnick, 1987 -- valid
  Azanialobus lawrencei Griswold & Platnick, 1987 -- valid
  Baalzebub nemesis Miller, Griswold & Yin, 2009 -- valid
  Baeolophus inornatus affabilis Grinnell & Swarth, 1926 -- valid
  Baeolophus inornatus sequestriatus Grinnell & Swarth, 1926 -- invalid
  Balistes (Canthidermis) Swainson, 1839 -- invalid
  Balistes (Melichthys) Swainson, 1839 -- invalid
  Balistes (Rhinecanthus) Swainson, 1839 -- invalid
  Baryconus bharatus Saraswat, 1978 -- valid
  Baryconus diversus Saraswat, 1978 -- valid
  Basileuterus culicivorus auricapilla (Swainson, 1838) -- valid
  Basileuterus culicivorus auricapillus (Swainson, 1838) -- invalid
  Basileuterus rufifrons (Swainson, 1838) -- valid -- Chipe gorra rufa, Paruline ŕ calotte rousse, Rufous-capped Warbler
  Basileuterus rufifrons rufifrons (Swainson, 1838) -- valid
  Batis capensis erythrophthalma Swynnerton, 1907 -- valid
  Belomys pearsonii kaleensis (Swinhoe, 1863) -- valid
  Bembix boharti Griswold, 1983 -- valid
  Bensonocythere whitei (Swain, 1952) -- valid
  Besma rubritincta (Cassino and Swett, 1925) -- valid
  Bleda syndactyla (Swainson, 1837) -- invalid
  Bleda syndactylus (Swainson, 1837) -- valid
  Bleda syndactylus syndactylus (Swainson, 1837) -- valid
  Blennophis Swainson, 1839 -- valid
  Blythipicus rubiginosus (Swainson, 1837) -- valid -- Maroon Woodpecker
  Boccardia polybranchia (Haswell, 1885) -- valid
  Bombus morio (Swederus, 1787) -- valid
  Bombycillidae Swainson, 1831 -- valid -- Waxwings
  Bomis calcuttaensis Biswas & Mazumder, 1981 -- valid
  Brachidontes Swainson, 1840 -- valid
  Brachirus Swainson, 1839 -- valid -- zebra firefishes, zebra fishes
  Brachygalba lugubris (Swainson, 1838) -- valid -- Brown Jacamar
  Brachygalba lugubris lugubris (Swainson, 1838) -- valid
  Brachyphylla cavernarum intermedia Swanepoel and Genoways, 1978 -- valid
  Bradycassis matogrossoensis Swietojanska and Borowiec, 1996 -- valid
  Bradypterus Swainson, 1837 -- valid
  Bradypterus tacsanowskius (Swinhoe, 1871) -- invalid -- Chinese Bush Warbler
  Bradypus melanotis Swainson, 1835 -- invalid
  Bronchocela danieli (Tiwari and Biswas, 1973) -- valid -- Daniel's Forest Lizard
  Bubaloceras pritchardiae Swezey, 1933 -- invalid
  Bubo caligatus Swinhoe, 1863 -- invalid
  Bucanetes mongolicus (Swinhoe, 1870) -- valid -- Mongolian Finch
  Buibui Griswold, 2001 -- valid
  Buibui abyssinica Griswold, 2001 -- valid
  Buibui claviger Griswold, 2001 -- valid
  Buibui cyrtata Griswold, 2001 -- valid
  Buibui kankamelos Griswold, 2001 -- valid
  Buibui orthoskelos Griswold, 2001 -- valid
  Bungarus andamanensis Biswas and Sanyal, 1978 -- valid -- South Andaman Krait
  Burhinus senegalensis (Swainson, 1837) -- valid -- Senegal Thick-knee
  Buteo buteo bannermani Swann, 1919 -- valid
  Buteo buteo harterti Swann, 1919 -- valid
  Buteogallus anthracinus bangsi (Swann, 1922) -- valid
  Cacicus haemorrhous affinis (Swainson, 1834) -- valid
  Calamus Swainson, 1839 -- valid
  Calandrella cheleensis (Swinhoe, 1871) -- valid -- Asian Short-toed Lark
  Calandrella cheleensis cheleensis (Swinhoe, 1871) -- valid
  Calcarius pictus (Swainson, 1832) -- valid -- bruant de Smith, Smith's Longspur
  Calceola Swainson, 1840 -- invalid
  Calceola angulata Swainson, 1840 -- invalid
  Callicanthus Swainson, 1839 -- invalid
  Callidium subopacum Swaine, 1919 -- invalid
  Calliopsis helianthi (Swenk and Cockerell, 1907) -- valid
  Calliopsis hesperia (Swenk and Cockerell, 1907) -- valid
  Calliopsis hesperia hesperia (Swenk and Cockerell, 1907) -- valid
  Calliostoma Swainson, 1840 -- valid
  Calliscapha Swainson, 1840 -- invalid
  Calocitta formosa (Swainson, 1827) -- valid -- Urraca-hermosa cara blanca, White-throated Magpie-Jay
  Calocitta formosa formosa (Swainson, 1827) -- valid
  Calotes bhutanensis Biswas, 1975 -- valid
  Calothorax lucifer (Swainson, 1827) -- valid -- Colibrí lucifer, Lucifer Hummingbird, Lucifer Sheartail
  Calyptomena viridis caudacuta Swainson, 1838 -- valid
  Calyptophilus frugivorus abbotti Richmond & Swales, 1924 -- valid
  Calyptura Swainson, 1832 -- valid
  Camarhynchus pallidus striatipecta (Swarth, 1931) -- valid
  Camarhynchus pallidus striatipectus (Swarth, 1931) -- invalid
  Camaricus rinkae Biswas & Roy, 2005 -- valid
  Campethera abingoni chrysura (Swainson, 1837) -- valid
  Campethera nivosa (Swainson, 1837) -- valid -- Buff-spotted Woodpecker
  Campethera nivosa nivosa (Swainson, 1837) -- valid
  Camponotus ligniperdus nigrescens Goesswald, 1932 -- valid
  Campylopterus Swainson, 1827 -- valid
  Campylopterus ensipennis (Swainson, 1822) -- valid -- White-tailed Sabrewing
  Campylopterus falcatus (Swainson, 1821) -- valid -- Lazuline Sabrewing
  Campylorhynchus fasciatus (Swainson, 1838) -- valid -- Fasciated Wren
  Campylorhynchus fasciatus fasciatus (Swainson, 1838) -- valid
  Campylorhynchus griseus (Swainson, 1838) -- valid -- Bicolored Wren
  Campylorhynchus griseus griseus (Swainson, 1838) -- valid
  Cantherhines Swainson, 1839 -- valid
  Canthidermis Swainson, 1839 -- valid
  Canthigaster Swainson, 1839 -- valid -- sharpnosed puffers
  Canthyria Swainson, 1840 -- invalid
  Caprimulgus affinis stictomus Swinhoe, 1863 -- valid
  Caprimulgus stictomus Swinhoe, 1863 -- invalid
  Capriscus (Chalisoma) Swainson, 1839 -- invalid
  Capriscus (Leiurus) Swainson, 1839 -- invalid
  Capriscus (Pachynathus) Swainson, 1839 -- invalid
  Cardellina rubra (Swainson, 1827) -- valid -- Paruline rouge, Red Warbler
  Cardellina rubra rubra (Swainson, 1827) -- valid
  Carduelis cucullata Swainson, 1820 -- invalid -- Red Siskin
  Caripeta criminosa Swett, 1906 -- invalid
  Carphoborus andersoni Swaine, 1919 -- valid
  Carphoborus blaisdelli Swaine, 1924 -- valid
  Carphoborus carri Swaine, 1917 -- valid
  Carphoborus dunni Swaine, 1924 -- valid
  Carphoborus ponderosae Swaine, 1924 -- valid
  Carphoborus radiatae Swaine, 1918 -- valid
  Carphoborus sansoni Swaine, 1924 -- valid
  Carpornis cucullata (Swainson, 1821) -- valid -- Hooded Berryeater
  Carpornis cucullatus (Swainson, 1821) -- invalid
  Carsia sororiata thaxteri Swett, 1917 -- valid
  Cassida antoni Borowiec and Swietojanska, 1997 -- valid
  Cassida chrysanthemoides Borowiec and Swietojanska, 2001 -- valid
  Cassida foveolatipennis Borowiec and Swietojanska, 2001 -- valid
  Cassida limpopoana Borowiec and Swietojanska, 2001 -- valid
  Cassida lycii Borowiec and Swietojanska, 2001 -- valid
  Cassida mroczkowskii Borowiec and Swietojanska, 1997 -- valid
  Cassida mysorensis Borowiec and Swietojanska, 1996 -- valid
  Cassida reticulipennis Borowiec and Swietojanska, 2001 -- valid
  Cassida sabahensis Swietojanska and Borowiec, 2002 -- valid
  Cassida tianshanica Borowiec and Swietojanska, 2001 -- valid
  Cassida transcaucasica Borowiec and Swietojanska, 2001 -- valid
  Cassida unica Swietojanska and Borowiec, 2002 -- valid
  Cassididae Swainson, 1832 -- invalid
  Castalia cordata Swainson, 1840 -- valid
  Castalia picta Swainson, 1840 -- invalid
  Castianeira bengalensis Biswas, 1984 -- valid
  Catherpes mexicanus (Swainson, 1829) -- valid -- Canyon Wren, Chivirín barranqueńo
  Catherpes mexicanus mexicanus (Swainson, 1829) -- valid
  Cecilioides aperta (Swainson, 1840) -- valid -- obtuse awlsnail
  Cecilioides apertus (Swainson, 1840) -- valid -- obtuse awlsnail
  Celaenorrhinini Swinhoe, 1912 -- valid
  Celeus brachyurus fokiensis (Swinhoe, 1863) -- valid
  Celeus brachyurus holroydi (Swinhoe, 1870) -- valid
  Centrina oxynotus Swainson, 1839 -- invalid
  Centrocercus Swainson, 1832 -- valid -- Sage Grouse
  Centropus bengalensis lignator Swinhoe, 1861 -- valid
  Centropus burchelli Swainson, 1838 -- invalid
  Centropus celebensis rufescens (A. B. Meyer & Wiglesworth, 1896) -- valid
  Centropus superciliosus burchellii Swainson, 1838 -- valid
  Centurus Swainson, 1837 -- invalid
  Cephalopachus Swainson, 1835 -- valid
  Ceratothoa argus (Haswell, 1881) -- valid
  Cerceis acuticaudata (Haswell, 1882) -- valid
  Cerceis trispinosa (Haswell, 1882A) -- valid
  Cerithidea Swainson, 1840 -- valid
  Cerithidea californica californica Swainson, 1840 -- valid
  Certhilauda Swainson, 1827 -- valid
  Cervus nippon hortulorum Swinhoe, 1864 -- valid
  Cervus nippon kopschi Swinhoe, 1873 -- valid -- South China sika
  Cervus nippon mantchuricus Swinhoe, 1864 -- valid
  Cestoplana australis Haswell, 1907 -- invalid
  Cettia canturians (Swinhoe, 1860) -- invalid
  Ceuthmochares aereus flavirostris (Swainson, 1837) -- valid
  Ceyx fallax sangirensis (A. B. Meyer & Wiglesworth, 1898) -- valid
  Chaetodermis Swainson, 1839 -- valid
  Chaetodon taurichthys Swainson, 1839 -- invalid
  Chaetops Swainson, 1832 -- valid
  Chamaea fasciata canicauda Grinnell and Swarth, 1926 -- invalid
  Chanea Miller, Griswold & Yin, 2009 -- valid
  Chanea suukyii Miller, Griswold & Yin, 2009 -- valid
  Charadrius alexandrinus dealbatus (Swinhoe, 1870) -- valid
  Charidotis diabolica Swietojanska and Borowiec, 2000 -- valid
  Charidotis tuberculata Swietojanska and Borowiec, 2000 -- valid
  Chauliops choprai Sweet and Schaeffer, 1985 -- valid
  Cheiracanthium aizwalensis Biswas & Biswas, 2007 -- valid
  Cheiracanthium tagorei Biswas & Raychaudhuri, 2003 -- valid
  Cheiracanthium tanmoyi Biswas & Roy, 2005 -- valid
  Chilomenes quadriplagiata (Swartz in Schönherr, 1808) -- invalid
  Chiridopsis ghatei Borowiec and Swietojanska, 2000 -- valid
  Chirocentrus nudus Swainson, 1839 -- valid -- arencón de aleta blanca, chirocentre sabre, smooth wolf herring, whitefin wolf herring, whitefin wolf-herring
  Chirolophis Swainson, 1839 -- valid -- warbonnets
  Chirostoma Swainson, 1839 -- valid
  Chlorichthys Swainson, 1839 -- invalid
  Chlorichthys grayii (Swainson, 1839) -- invalid
  Chloricthys Swainson, 1839 -- invalid
  Chlorocichla flavicollis (Swainson, 1837) -- invalid -- Yellow-throated Leaflove
  Chloropsis hardwickii lazulina (Swinhoe, 1870) -- valid
  Chlorurus Swainson, 1839 -- valid
  Chondestes Swainson, 1827 -- valid -- Lark Sparrows
  Chondestes grammacus strigatus Swainson, 1827 -- valid
  Chordeiles Swainson, 1832 -- valid -- Nighthawks
  Chroicocephalus cirrocephalus poiocephalus (Swainson, 1837) -- valid
  Chroicocephalus saundersi Swinhoe, 1871 -- valid -- Saunders's Gull
  Chromileptes Swainson, 1839 -- valid
  Chromis acares Randall and Swerdloff, 1973 -- valid
  Chromis hanui Randall and Swerdloff, 1973 -- valid
  Chromis struhsakeri Randall and Swerdloff, 1973 -- valid
  Chrysiptera Swainson, 1839 -- valid
  Chrysoblephus Swainson, 1839 -- valid
  Chrysomus Swainson, 1837 -- valid
  Chrysostoma Swainson, 1840 -- valid
  Cichlasoma Swainson, 1839 -- valid -- American cichlids
  Ciconia boyciana Swinhoe, 1873 -- valid -- Oriental Stork, Oriental White Stork
  Ciconia ciconia boyciana Swinhoe, 1873 -- invalid -- Oriental White Stork
  Cilicaea crassa Haswell, 1882 -- valid
  Cilicaea crassicaudata Haswell, 1881 -- valid
  Cilicaea curtispina Haswell, 1882A -- valid
  Cilicaea hystrix Haswell, 1882 -- valid
  Cilicaea spinulosa Haswell, 1882 -- valid
  Cilicaea tenuicaudata Haswell, 1881 -- valid
  Cinclodes fuscus longipennis (Swainson, 1838) -- valid
  Cinclus mexicanus Swainson, 1827 -- valid -- American Dipper, Mirlo-acuático norteamericano
  Cinclus mexicanus mexicanus Swainson, 1827 -- valid
  Cingilia catenaria immacularia Swett, 1914 -- invalid
  Cingilia rubiferaria Swett, 1910 -- invalid
  Cinnyris jugularis rhizophorae (Swinhoe, 1869) -- valid
  Cirolana lata Haswell, 1882 -- valid
  Cirrhisomus Swainson, 1839 -- invalid
  Cirripectes Swainson, 1839 -- valid
  Cirripectus Swainson, 1839 -- invalid
  Cissites maculata (Swederus, 1787) -- valid
  Cisticola exilis volitans (Swinhoe, 1859) -- valid
  Cisticola juncidis tinnabulans (Swinhoe, 1859) -- valid
  Cistothorus palustris aestuarinus (Swarth, 1917) -- valid
  Clamator levaillantii (Swainson, 1829) -- valid -- Levaillant's Cuckoo
  Cletocythereis Swain, 1963 -- valid
  Climacoidea concinnoidea (Swain, 1955) -- valid
  Climacoidea multicarinata (Swain, 1955) -- valid
  Clinitrachus Swainson, 1839 -- valid
  Clubiona anwarae Biswas & Raychaudhuri, 1996 -- valid
  Clubiona bagerhatensis Biswas & Raychaudhuri, 1996 -- valid
  Clubiona bengalensis Biswas, 1984 -- valid
  Clubiona boxaensis Biswas & Biswas, 1992 -- valid
  Clubiona mujibari Biswas & Raychaudhuri, 1996 -- valid
  Clupea sicula Swainson, 1839 -- invalid
  Clupisoma Swainson, 1838 -- valid
  Clupisudis Swainson, 1839 -- invalid
  Coccorchestes ferreus Griswold, 1984 -- valid
  Cochisea barnesi Cassino and Swett, 1922 -- valid
  Coddingtonia Miller, Griswold & Yin, 2009 -- valid
  Coddingtonia euryopoides Miller, Griswold & Yin, 2009 -- valid
  Coelophora biplagiata (Swartz, 1808) -- valid
  Coelophora pupillata (Swartz in Schönherr, 1808) -- valid -- tenspotted lady beetle
  Coelotes acicularis Wang, Griswold & Ubick, 2009 -- valid
  Coelotes pseudoguangxian Wang, Griswold & Ubick, 2009 -- valid
  Coelotes pseudoyunnanensis Wang, Griswold & Ubick, 2009 -- valid
  Coelotes yanhengmei Wang, Griswold & Ubick, 2009 -- valid
  Colaptes Swainson, 1825 -- valid -- Flickers
  Colaptes auratus mexicanus Swainson, 1827 -- valid
  Coliadinae Swainson, 1821 -- valid -- Sulphurs
  Colibri thalassinus (Swainson, 1827) -- valid -- Colibrí oreja violeta, Green Violet-ear, Green Violetear
  Colibri thalassinus thalassinus (Swainson, 1827) -- valid
  Colletes banksi Swenk, 1908 -- valid
  Colletes birkmanni Swenk, 1906 -- valid
  Colletes bruneri Swenk, 1904 -- valid
  Colletes clypeonitens Swenk, 1906 -- valid
  Colletes compactus hesperius Swenk, 1906 -- valid
  Colletes consors mesocopus Swenk, 1907 -- valid
  Colletes fulgidus Swenk, 1904 -- valid
  Colletes fulgidus fulgidus Swenk, 1904 -- valid
  Colletes howardi Swenk, 1925 -- valid
  Colletes impunctatus lacustris Swenk, 1906 -- valid
  Colletes intermixtus Swenk, 1905 -- valid
  Colletes isthmicus Swenk, 1930 -- valid
  Colletes niger Swenk, 1904 -- valid
  Colletes ochraceus Swenk, 1906 -- valid
  Colletes petalostemonis Swenk, 1906 -- valid
  Colletes scopiventer Swenk, 1908 -- valid
  Colletes simulans nevadensis Swenk, 1908 -- valid
  Colletes solidaginis Swenk, 1906 -- valid
  Colletes susannae Swenk, 1925 -- valid
  Colletes texanus crawfordi Swenk, 1906 -- valid
  Colluricincla harmonica strigata Swainson, 1838 -- valid
  Colomastix brazieri Haswell, 1879 -- valid
  Columbellidae Swainson, 1840 -- valid
  Complanaria Swainson, 1840 -- invalid
  Complanaria gigas Swainson, 1840 -- invalid
  Conchyloctenia capensis Swietojanska and Borowiec, 2002 -- valid
  Contopus borealis (Swainson, 1832) -- invalid -- Olive-sided Flycatcher, Pibí boreal
  Conus andrangae Swengel, 1955 -- invalid
  Copicerus Swartz, 1802 -- valid
  Copicerus irroratus Swartz, 1802 -- valid
  Copicerus irroratus irroratus Swartz, 1802 -- valid
  Coppingeria Haswell, 1892 -- valid
  Coptocycla arcuata (Swederus, 1787) -- valid
  Coracina lineata (Swainson, 1825) -- valid -- Barred Cuckooshrike
  Coracina lineata lineata (Swainson, 1825) -- valid
  Coracina macei rexpineti (Swinhoe, 1863) -- valid
  Coracina melaschistos saturata (Swinhoe, 1870) -- valid
  Coracina morio talautensis (A. B. Meyer & Wiglesworth, 1895) -- valid
  Corvus macrorhynchos colonorum Swinhoe, 1864 -- valid
  Coryphospingus cucullatus rubescens (Swainson, 1825) -- valid
  Coturnicops exquisitus (Swinhoe, 1873) -- valid -- Swinhoe's Rail
  Craspedella Haswell, 1893 -- valid
  Craspedella spenceri Haswell, 1893 -- valid
  Craspedonta laotica Swietojanska and Borowiec, 2000 -- valid
  Crassignatha ertou Miller, Griswold & Yin, 2009 -- valid
  Crassignatha gudu Miller, Griswold & Yin, 2009 -- valid
  Crassignatha longtou Miller, Griswold & Yin, 2009 -- valid
  Crassignatha pianma Miller, Griswold & Yin, 2009 -- valid
  Crassignatha quanqu Miller, Griswold & Yin, 2009 -- valid
  Crassignatha yamu Miller, Griswold & Yin, 2009 -- valid
  Crassignatha yinzhi Miller, Griswold & Yin, 2009 -- valid
  Crassilabrus Swainson, 1839 -- invalid
  Crassispira Swainson, 1840 -- valid
  Craugastor tabasarae (Savage, Hollingsworth, Lips and Jaslow, 2004) -- valid
  Criniger olivaceus (Swainson, 1837) -- valid -- Yellow-bearded Greenbul
  Crithagra Swainson, 1827 -- valid
  Cromileptes Swainson, 1839 -- invalid
  Cromileptes Swainson, 1839 -- invalid
  Crossocheilus klatti (Kosswig, 1950) -- valid
  Crossoptilon mantchuricum Swinhoe, 1863 -- valid -- Brown Eared Pheasant
  Crotophaga sulcirostris Swainson, 1827 -- valid -- Garrapatero pijuy, Groove-billed Ani
  Crotophaga sulcirostris sulcirostris Swainson, 1827 -- valid
  Cruriraja durbanensis (Von Bonde and Swart, 1923) -- valid
  Cruriraja parcomaculata (Von Bonde and Swart, 1923) -- valid
  Cryptotomus beryllinus Jordan and Swain, 1884 -- invalid
  Crypturellus tataupa lepidotus (Swainson, 1837) -- valid
  Crypturgus borealis Swaine, 1917 -- valid
  Culicicapa Swinhoe, 1871 -- valid
  Culicicapa ceylonensis (Swainson, 1820) -- valid -- Grey-headed Canary-Flycatcher
  Culicicapa ceylonensis ceylonensis (Swainson, 1820) -- valid
  Culicivora Swainson, 1827 -- valid
  Cunicula Swainson, 1840 -- invalid
  Cursorius temminckii Swainson, 1822 -- valid -- Temminck's Courser
  Cushmanidea pauciradialis Swain, 1967 -- valid
  Cuterebra abdominalis Swenk, 1905 -- valid
  Cuterebra albifrons Swenk, 1905 -- invalid
  Cuterebra fasciata Swenk, 1905 -- valid
  Cyanocitta stelleri coronata (Swainson, 1827) -- valid
  Cyatholipus avus Griswold, 1987 -- valid
  Cyatholipus icubatus Griswold, 1987 -- valid
  Cyatholipus isolatus Griswold, 1987 -- valid
  Cyatholipus tortilis Griswold, 1987 -- valid
  Cyclarhis Swainson, 1824 -- valid
  Cyclosa bituberculata Biswas & Raychaudhuri, 1998 -- valid
  Cyclosa elongata Biswas & Raychaudhuri, 1998 -- valid
  Cyclosa tropica Biswas & Raychaudhuri, 1998 -- valid
  Cyclosa yaginumai Biswas & Raychaudhuri, 1998 -- valid
  Cyclotus Swainson, 1840 -- valid
  Cymodoce aculeata Haswell, 1881 -- valid
  Cymodoce aculeata aculeata Haswell, 1881 -- valid
  Cymodoce aspera (Haswell, 1881) -- valid
  Cymodoce bidentata Haswell, 1882 -- valid
  Cymodoce bidentata bidentata Haswell, 1882 -- valid
  Cymodoce coronata Haswell, 1882 -- valid
  Cymodoce coronata coronata Haswell, 1882 -- valid
  Cymodoce mammifera Haswell, 1881 -- valid
  Cynaedus Swainson, 1839 -- invalid
  Cynanthus Swainson, 1827 -- valid -- Broad-billed Hummingbirds
  Cynanthus latirostris Swainson, 1827 -- valid -- Broad-billed Hummingbird, Colibrí pico ancho
  Cynanthus latirostris latirostris Swainson, 1827 -- valid
  Cyornis tickelliae jerdoni Holdsworth, 1872 -- valid
  Cypraea spadicea Swainson, 1836 -- valid -- chestnut cowrie
  Cyproidea Haswell, 1880 -- valid
  Cypselurus Swainson, 1838 -- valid
  Cyrtophora lahirii Biswas & Raychaudhuri, 2004 -- valid
  Cyrtophora nareshi Biswas & Raychaudhuri, 2004 -- valid
  Cytheretta minutipunctata Swain and Gilby, 1974 -- valid
  Cytheretta rothwelli Swain and Gilby, 1974 -- valid
  Cytheretta teshekpukensis Swain, 1963 -- valid
  Cytheromorpha paracastanea (Swain, 1955) -- valid
  Cytheropteron paralatissimum Swain, 1963 -- valid
  Cytherura radialirata Swain, 1955 -- valid
  Dactylopodalia cornuta Swedmark, 1956 -- invalid
  Dactylopodalia roscovita Swedmark, 1967 -- invalid
  Dactylopodola cornuta (Swedmark, 1956) -- valid
  Dactylopodola cornuta cornuta (Swedmark, 1956) -- valid
  Dactylopodola roscovita (Swedmark, 1967) -- valid
  Darkoneta Ledford & Griswold, 2010 -- valid
  Darkoneta quetzal Ledford & Griswold, 2010 -- valid
  Darkoneta reddelli Ledford & Griswold, 2010 -- valid
  Dasylophus Swainson, 1837 -- valid
  Deinopis liukuensis Yin, Griswold & Yan, 2002 -- valid
  Dendostrea Swainson, 1835 -- valid
  Dendragapus obscurus pallidus Swarth, 1931 -- valid
  Dendragapus obscurus sitkensis Swarth, 1921 -- valid
  Dendrelaphis humayuni Tiwari and Biswas, 1973 -- valid -- Tiwar's Bronzeback
  Dendrochirus Swainson, 1839 -- valid
  Dendrocitta formosae Swinhoe, 1863 -- valid -- Grey Treepie
  Dendrocitta formosae formosae Swinhoe, 1863 -- valid
  Dendrocopos canicapillus kaleensis (Swinhoe, 1863) -- valid
  Dendrocopos canicapillus scintilliceps (Swinhoe, 1863) -- valid
  Dendrocopos mahrattensis pallescens Biswas, 1951 -- valid
  Dendrocopos pubescens medianus (Swainson, 1832) -- invalid
  Dendrocopos villosus audubonii (Swainson, 1832) -- invalid
  Dendrocopos villosus sitkensis (Swarth, 1911) -- invalid
  Dendrocygna Swainson, 1837 -- valid -- Whistling-Ducks
  Diaea bengalensis Biswas & Mazumder, 1981 -- valid
  Dianthidium anophrys Griswold & Michener, 1988 -- valid
  Dianthidium bohartorum Griswold & Michener, 1988 -- valid
  Dianthidium chamela Griswold & Michener, 1988 -- valid
  Dianthidium discophorum Griswold & Michener, 1988 -- valid
  Dianthidium subparvum Swenk, 1914 -- valid
  Diastictis anataria Swett, 1913 -- invalid
  Diastictis andersoni Swett, 1916 -- invalid
  Dicaeum celebicum talautense A. B. Meyer & Wiglesworth, 1895 -- valid
  Dicaeum minullum Swinhoe, 1870 -- valid
  Dicaeum minullum minullum Swinhoe, 1870 -- valid
  Dichoteleas indicus Saraswat, 1982 -- valid
  Dicrurus aeneus braunianus (Swinhoe, 1863) -- valid
  Dicrurus atripennis Swainson, 1837 -- valid -- Shining Drongo
  Dicrurus leucophaeus innexus (Swinhoe, 1870) -- valid
  Dicrurus macrocercus cathoecus Swinhoe, 1871 -- valid
  Dictyophorodelphax Swezey, 1907 -- valid
  Dictyophorodelphax mirabilis Swezey, 1907 -- valid
  Dictyophorodelphax usingeri Swezey, 1937 -- valid
  Didymorchis Haswell, 1900 -- valid
  Didymorchis astacopsidis Haswell, 1900 -- valid
  Didymorchis cherapsis Haswell, 1900 -- valid
  Didymorchis paranephropis Haswell, 1900 -- valid
  Digrammia fieldi (Swett, 1916) -- valid
  Dilar macleodi Oswald and Schiff, 2001 -- valid
  Diplosara pittospori (Swezey, 1954) -- invalid
  Diplosolenia Haswell, 1907 -- invalid
  Diplosolenia johnstoni Haswell, 1907 -- invalid
  Dipodomys merriami olivaceus Swarth, 1929 -- valid
  Dithectocoris Swanson, 2017 -- valid
  Dolichonyx Swainson, 1827 -- valid -- Bobolinks
  Donacobius Swainson, 1831 -- valid
  Drepanacrinae Oswald, 1993 -- valid
  Drymophila Swainson, 1824 -- valid
  Dryocoetes confusus Swaine, 1912 -- valid -- scolyte du sapin de l'ouest, western balsam bark beetle
  Dryocoetes sechelti Swaine, 1915 -- valid
  Ducula aenea intermedia (A. B. Meyer & Wiglesworth, 1894) -- valid
  Duosclera Reiswig & Ricciardi, 1993 -- valid
  Dysstroma mackieata Cassino and Swett, 1923 -- invalid
  Dysstroma sobria Swett, 1917 -- valid -- 10-spotted Rhododendron Moth
  Dysstroma suspectata mackieata Cassino and Swett, 1923 -- valid
  Echinoplana Haswell, 1907 -- valid
  Echinoplana celerrima Haswell, 1907 -- valid
  Echinoplana tenerrima Haswell, 1907 -- invalid
  Ectopistes Swainson, 1827 -- valid -- Passenger Pigeons
  Egglestonichthys melanoptera (Visweswara Rao, 1971) -- valid
  Egretta eulophotes (Swinhoe, 1860) -- valid -- Aigrette de Chine, Chinese Egret
  Eisothistos Haswell, 1884 -- valid
  Eisothistos vermiformis Haswell, 1884A -- valid
  Elaphodus cephalophus michianus (Swinhoe, 1874) -- valid
  Elaphognathia ferox (Haswell, 1884) -- valid
  Elminia longicauda (Swainson, 1838) -- valid -- African Blue Flycatcher
  Elminia longicauda longicauda (Swainson, 1838) -- valid
  Elysia ornata (Swainson, 1840) -- valid -- ornate elysia
  Emberiza elegans elegantula Swinhoe, 1870 -- valid
  Emberiza schoeniclus pyrrhulina (Swinhoe, 1876) -- valid
  Emberiza tristrami Swinhoe, 1870 -- valid -- Tristram's Bunting
  Emberiza yessoensis (Swinhoe, 1874) -- valid -- Japanese Reed Bunting
  Emberiza yessoensis yessoensis (Swinhoe, 1874) -- valid
  Empidonax affinis (Swainson, 1827) -- valid -- Mosquero pinero, Pine Flycatcher
  Empidonax affinis affinis (Swainson, 1827) -- valid
  Engraulis eurystole (Swain and Meek, 1884) -- valid -- camiguana anchovy, silver anchovy
  Enophrys Swainson, 1839 -- valid -- stone sculpins
  Enterogonia Haswell, 1907 -- invalid
  Enterogonia orbicularis pigrans Haswell, 1907 -- invalid
  Enterogonia pigrans Haswell, 1907 -- invalid
  Entomyzon Swainson, 1825 -- valid
  Enypia coolidgi Cassino and Swett, 1923 -- valid
  Eohaustorius brevicuspis Bosworth, 1973 -- valid
  Eohaustorius estuarius Bosworth, 1973 -- valid
  Eohaustorius sawyeri Bosworth, 1973 -- valid
  Eopsaltria Swainson, 1832 -- valid
  Eos histrio talautensis A. B. Meyer & Wiglesworth, 1894 -- valid
  Epeirotypus dalong Miller, Griswold & Yin, 2009 -- valid
  Epeus chilapataensis (Biswas & Biswas, 1992) -- valid
  Ephialtes glabripes Swinhoe, 1870 -- invalid
  Ephialtes hambroecki Swinhoe, 1870 -- invalid
  Ephialtes umbratilis Swinhoe, 1870 -- invalid
  Ephydatia ramsayi (Haswell, 1882) -- valid
  Epirrita autummata henshawi (Swett, 1917) -- invalid
  Epirrita autumnata henshawi (Swett, 1917) -- valid -- Autumn Moth, November Moth
  Eremopsaltria mongolica (Swinhoe, 1870) -- invalid -- Mongolian Finch
  Erethizon dorsatus bruneri Swenk, 1916 -- valid
  Ergaticus ruber (Swainson, 1827) -- invalid -- Chipe rojo, Red Warbler
  Ergaticus ruber ruber (Swainson, 1827) -- invalid
  Erosa Swainson, 1839 -- valid
  Erpornis zantholeuca tyrannulus Swinhoe, 1870 -- valid
  Erychthys Swainson, 1839 -- invalid
  Erythrura Swainson, 1837 -- valid -- Parrot-Finches
  Esomus Swainson, 1839 -- valid
  Estrilda Swainson, 1827 -- valid -- Waxbills
  Etheostoma blennius Gilbert and Swain in Gilbert, 1887 -- valid -- blenny darter
  Etheostoma blennius blennius Gilbert and Swain in Gilbert, 1887 -- valid
  Etheostoma chienense Page and Ceas in Page, Ceas, Swofford and Buth, 1992 -- valid -- relict darter
  Etheostoma corona Page and Ceas in Page, Ceas, Swofford and Buth, 1992 -- valid -- crown darter
  Etheostoma forbesi Page and Ceas in Page, Ceas, Swofford and Buth, 1992 -- valid -- Barrens darter
  Etheostoma luteovinctum Gilbert and Swain in Gilbert, 1887 -- valid -- redband darter
  Etheostoma nigrum susanae (Jordan and Swain, 1883) -- valid
  Etheostoma oophylax Ceas and Page in Page, Ceas, Swofford and Buth, 1992 -- valid -- guardian darter
  Etheostoma parvipinne Gilbert and Swain in Gilbert, 1887 -- valid -- goldstripe darter
  Etheostoma pseudovulatum Page and Ceas in Page, Ceas, Swofford and Buth, 1992 -- valid -- egg-mimic darter
  Etheostoma rupestre Gilbert and Swain in Gilbert, 1887 -- valid -- rock darter
  Etheostoma sagitta (Jordan and Swain, 1883) -- valid -- arrow darter
  Etheostoma sagitta sagitta (Jordan and Swain, 1883) -- invalid -- Cumberland arrow darter
  Etheostoma susanae (Jordan and Swain, 1883) -- valid -- Cumberland darter
  Etheostoma tuscumbia Gilbert and Swain in Gilbert, 1887 -- valid -- Tuscumbia darter
  Eubaphe rotundata (Cassino and Swett, 1922) -- valid
  Eucandonidae Swain, 1961 -- valid
  Eucaterva bonniwelli Cassino and Swett, 1922 -- valid
  Eudamus Swainson, 1831 -- invalid
  Eugenes fulgens (Swainson, 1827) -- valid -- Colibrí magnífico, Magnificent Hummingbird
  Eugenes fulgens fulgens (Swainson, 1827) -- valid
  Euhyposmocoma trivitella Swezey, 1913 -- invalid
  Eumops wilsoni Baker, McDonough, Swier, Larsen, Carrera and Ammerman, 2009 -- valid
  Eumyias thalassina (Swainson, 1838) -- invalid
  Eumyias thalassinus (Swainson, 1838) -- valid
  Eumyias thalassinus thalassinus (Swainson, 1838) -- valid
  Eupemis Swainson, 1839 -- invalid
  Euphyia minima Cassino and Swett, 1922 -- valid
  Eupithecia biedermanata Cassino and Swett, 1922 -- valid
  Eupithecia bonita Cassino and Swett, 1925 -- invalid
  Eupithecia bowmani Cassino and Swett, 1923 -- valid
  Eupithecia gilvipennata Cassino and Swett, 1922 -- valid
  Eupithecia herefordaria Cassino and Swett, 1923 -- valid
  Eupithecia intricata taylorata Swett, 1907 -- invalid
  Eupithecia joanata Cassino and Swett, 1922 -- valid
  Eupithecia misturata frostiata Swett, 1917 -- invalid
  Eupithecia monacheata Cassino and Swett, 1922 -- valid
  Eupithecia palmata Cassino and Swett, 1922 -- valid
  Eupithecia russeliata Swett, 1908 -- valid
  Eupithecia shirleyata Cassino and Swett, 1922 -- valid
  Eupithecia stypheliae (Swezey, 1948) -- valid
  Eupithecia woodgatata (Cassino and Swett, 1923) -- valid
  Eupithecia zelmira Swett and Cassino, 1920 -- valid
  Euplectes Swainson, 1829 -- valid -- Bishops
  Eurylophella oviruptis Funk in Funk, Jackson and Sweeney, 2008 -- valid
  Eusiroides monoculoides (Haswell, 1879) -- valid
  Eutichurus tezpurensis Biswas, 1991 -- valid
  Evotomys phaeus Swarth, 1911 -- invalid
  Falco chicquera ruficollis Swainson, 1837 -- valid
  Falco columbarius bendirei Swann, 1922 -- invalid
  Falco longipennis Swainson, 1838 -- valid -- Australian Hobby
  Falco longipennis longipennis Swainson, 1838 -- valid
  Falco peregrinus macropus Swainson, 1838 -- valid
  Falco severus papuanus A. B. Meyer & Wiglesworth, 1893 -- valid
  Falco sparverius cinnamominus Swainson, 1838 -- valid
  Falco sparverius isabellinus Swainson, 1838 -- valid
  Falco tinnunculus rufescens Swainson, 1837 -- valid
  Felis canescens Swainson, 1838 -- invalid
  Ficedula hyperythra innexa (Swinhoe, 1866) -- valid
  Finmarchinella Swain, 1963 -- valid
  Flabellum campanulatum Holdsworth, 1862 -- valid
  Fletcherana giffardi (Swezey, 1913) -- valid
  Fletcherana roseata (Swezey, 1913) -- valid
  Fluvicola Swainson, 1827 -- valid
  Formicivora Swainson, 1824 -- valid
  Foulehaio carunculatus taviunensis (Wiglesworth, 1891) -- valid
  Furnarius leucopus Swainson, 1838 -- valid -- Pale-legged Hornero
  Furnarius leucopus leucopus Swainson, 1838 -- valid
  Fusininae Swainson, 1840 -- invalid
  Gaiziapis Miller, Griswold & Yin, 2009 -- valid
  Gaiziapis zhizhuba Miller, Griswold & Yin, 2009 -- valid
  Galerida cristata leautungensis (Swinhoe, 1861) -- valid
  Gallinago megala Swinhoe, 1861 -- valid -- Swinhoe's Snipe
  Gallirallus striatus albiventer (Swainson, 1838) -- valid
  Gaoligonga Miller, Griswold & Yin, 2009 -- valid
  Gaoligonga changya Miller, Griswold & Yin, 2009 -- valid
  Gaoligonga zhusun Miller, Griswold & Yin, 2009 -- valid
  Garrulax chinensis monachus Swinhoe, 1870 -- valid
  Garrulax davidi (Swinhoe, 1868) -- valid -- Plain Laughingthrush
  Garrulax davidi davidi (Swinhoe, 1868) -- valid
  Garrulax pectoralis picticollis Swinhoe, 1872 -- valid
  Garrulax sannio Swinhoe, 1867 -- valid -- White-browed Laughingthrush
  Garrulax sannio sannio Swinhoe, 1867 -- valid
  Garrulax taewanus Swinhoe, 1859 -- valid
  Garrulus glandarius sinensis Swinhoe, 1871 -- valid
  Gastropteridae Swainson, 1840 -- valid
  Genicanthus Swainson, 1839 -- valid
  Geobates Swainson, 1838 -- invalid
  Geocolaptes Swainson, 1832 -- valid
  Geocoris barberi Readio and Sweet, 1982 -- valid
  Geomys bursarius majusculus Swenk, 1939 -- valid
  Geopelia Swainson, 1837 -- valid -- Zebra Doves
  Geositta Swainson, 1837 -- valid
  Geothlypis trichas brachidactylus (Swainson, 1837) -- invalid
  Geranoaetus melanoleucus australis Swann, 1922 -- valid
  Gibberula Swainson, 1840 -- valid
  Glaucidium brodiei pardalotum (Swinhoe, 1863) -- valid
  Glaucina lowensis (Cassino and Swett, 1925) -- valid
  Glaucina spaldingata (Cassino and Swett, 1923) -- valid
  Glaucina utahensis (Cassino and Swett, 1924) -- valid
  Gliciphila Swainson, 1837 -- valid
  Glyphisodon gaimardii Swainson, 1839 -- invalid
  Gnaphosa kankhalae Biswas & Roy, 2008 -- valid
  Gnathium caviceps MacSwain, 1952 -- valid
  Gnathium eremicola MacSwain, 1952 -- valid
  Gnathium martini MacSwain, 1952 -- valid
  Gnathium nannulum MacSwain, 1952 -- valid
  Gnathium obscurum MacSwain, 1952 -- valid
  Gnathium vandykei MacSwain, 1952 -- valid
  Goloboffia Griswold & Ledford, 2001 -- valid
  Griswoldia acaenata (Griswold, 1991) -- valid
  Griswoldia leleupi (Griswold, 1991) -- valid
  Griswoldia meikleae (Griswold, 1991) -- valid
  Griswoldia sibyna (Griswold, 1991) -- valid
  Griswoldia transversa (Griswold, 1991) -- valid
  Guiraca Swainson, 1827 -- invalid -- Blue Grosbeaks
  Gymnapistes Swainson, 1839 -- valid
  Gymnocanthus Swainson, 1839 -- valid
  Gyrocotyle nigrosetosa Haswell, 1902 -- valid
  Habronattus abditus Griswold, 1987 -- valid
  Habronattus alachua Griswold, 1987 -- valid
  Habronattus ballatoris Griswold, 1987 -- valid
  Habronattus calcaratus agricola Griswold, 1987 -- valid
  Habronattus calcaratus maddisoni Griswold, 1987 -- valid
  Habronattus carpus Griswold, 1987 -- valid
  Habronattus ciboneyanus Griswold, 1987 -- valid
  Habronattus cuspidatus Griswold, 1987 -- valid
  Habronattus dossenus Griswold, 1987 -- valid
  Habronattus encantadas Griswold, 1987 -- valid
  Habronattus geronimoi Griswold, 1987 -- valid
  Habronattus gigas Griswold, 1987 -- valid
  Habronattus huastecanus Griswold, 1987 -- valid
  Habronattus icenoglei (Griswold, 1979) -- valid
  Habronattus iviei Griswold, 1987 -- valid
  Habronattus kawini (Griswold, 1979) -- valid
  Habronattus kubai (Griswold, 1979) -- valid
  Habronattus mataxus Griswold, 1987 -- valid
  Habronattus nahuatlanus Griswold, 1987 -- valid
  Habronattus nesiotus Griswold, 1987 -- valid
  Habronattus notialis Griswold, 1987 -- valid
  Habronattus ocala Griswold, 1987 -- valid
  Habronattus ophrys Griswold, 1987 -- valid
  Habronattus orbus Griswold, 1987 -- valid
  Habronattus pochtecanus Griswold, 1987 -- valid
  Habronattus pugillis Griswold, 1987 -- valid
  Habronattus renidens Griswold, 1987 -- valid
  Habronattus schlingeri (Griswold, 1979) -- valid
  Habronattus sugillatus Griswold, 1987 -- valid
  Habronattus tarascanus Griswold, 1987 -- valid
  Habronattus tlaxcalanus Griswold, 1987 -- valid
  Habronattus ustulatus (Griswold, 1979) -- valid
  Habronattus velivolus Griswold, 1987 -- valid
  Habronattus venatoris Griswold, 1987 -- valid
  Habronattus virgulatus Griswold, 1987 -- valid
  Habronattus zapotecanus Griswold, 1987 -- valid
  Habroteleia bharatensis Saraswat, 1978 -- valid
  Haematopinus channabasavannai Krishna Rao, Khuddus and Kuppuswamy, 1977 -- valid
  Haematopus ostralegus osculans Swinhoe, 1871 -- valid
  Haemorhous Swainson, 1837 -- valid
  Haemulon rimator Jordan and Swain in Bean and Dresel, 1884 -- invalid -- redmouthed grunt, tomtate
  Halammohydra adherens Swedmark and Teissier, 1958 -- valid
  Halammohydra vermiformis Swedmark and Teissier, 1957 -- valid
  Halcyon Swainson, 1821 -- valid -- Blue Kingfishers
  Halcyon cinnamomina Swainson, 1821 -- invalid
  Halcyon cinnamomina cinnamomina Swainson, 1821 -- invalid
  Halcyon cinnamonina Swainson, 1821 -- invalid -- Micronesian Kingfisher
  Halcyon malimbica torquata Swainson, 1837 -- valid
  Haliophasma Haswell, 1881 -- valid
  Haliophasma purpurea Haswell, 1881 -- valid
  Haliophyle ferruginea (Swezey, 1932) -- valid
  Haliotis californiensis Swainson, 1822 -- invalid
  Haliotis carinata Swainson, 1822 -- invalid
  Haliotis costata Swainson, 1822 -- invalid
  Haliotis cracherodii californiensis Swainson, 1822 -- valid
  Haliotis crenata Swainson, 1822 -- invalid
  Haliotis glabra Swainson, 1822 -- invalid
  Haliotis rufescens Swainson, 1822 -- valid -- abulón rojo, red abalone
  Hamingia pacifica Biseswar, 1993 -- valid
  Harpactes Swainson, 1833 -- valid
  Haswellia anomala (Haswell, 1881) -- valid
  Haswellia carnea (Haswell, 1881) -- valid
  Haswellia emarginata (Haswell, 1882) -- valid
  Haswellina australiensis (Haswell, 1881) -- valid
  Heliconiina Swainson, 1822 -- valid
  Heliconiinae Swainson, 1822 -- valid -- Fritillaries, Heliconians
  Heliconiini Swainson, 1822 -- valid
  Helictis subaurantica Swinhoe, 1862 -- invalid
  Helisoma Swainson, 1840 -- valid
  Hemanthias vivanus (Jordan and Swain, 1885) -- valid -- barbero rojo, red barbier
  Hemicircus Swainson, 1837 -- valid
  Hemicytherura lankfordi Swain and Gilby, 1974 -- valid
  Hemistoma Swainson, 1839 -- invalid
  Hemistoma reticulata Swainson, 1839 -- invalid
  Hemitoma Swainson, 1840 -- valid
  Hemitrochus Swainson, 1840 -- valid
  Hemiulis Swainson, 1839 -- invalid
  Hemixos castanonotus Swinhoe, 1870 -- valid -- Chestnut Bulbul
  Hemixos castanonotus castanonotus Swinhoe, 1870 -- valid
  Hepsetus Swainson, 1838 -- valid
  Heriades apriculus Griswold, 1998 -- valid
  Heriades psiadiae Pauly & Griswold, 2001 -- valid
  Heriades schwarzi Griswold, 1998 -- valid
  Heriades seyrigi Pauly & Griswold, 2001 -- valid
  Heriades swarzi Griswold, 1998 -- invalid
  Hermanites tricornis (Swain, 1967) -- valid
  Herpyllus calcuttaensis Biswas, 1984 -- valid
  Heterochaerus Haswell, 1905 -- valid
  Heterochaerus australis Haswell, 1905 -- valid
  Heterophasia auricularis (Swinhoe, 1864) -- valid -- White-eared Sibia
  Heteropoda buxa Saha, Biswas & Raychaudhuri, 1995 -- valid
  Heteropoda debalae Biswas & Roy, 2005 -- valid
  Heteropoda straminea Kundu, Biswas & Raychaudhuri, 1999 -- valid
  Hexanchias Swainson, 1838 -- invalid
  Hilarocassis maculicollis Swietojanska, 2003 -- valid
  Hindumanes karnatakaensis (Tikader & Biswas, 1978) -- valid
  Hipparchiinae Swainson, 1820 -- invalid
  Hippoglossus gigas Swainson, 1839 -- invalid
  Hippotion rosetta (Swinhoe, 1892) -- valid -- Vine Hawk Moth
  Hirundo leucosoma Swainson, 1837 -- valid -- Pied-winged Swallow
  Hispa tarsata Swietojanska, 2001 -- valid
  Hispa waiensis Borowiec and Swietojanska, 2007 -- valid
  Hister paraincognitus Chakraborty and Biswas, 2003 -- valid
  Hodometrica australis (Haswell, 1882) -- valid
  Hoplitis emarginata (Griswold, 1983) -- valid
  Hoplitis orthognatha (Griswold, 1983) -- valid
  Hoplitis paiute (Griswold, 1983) -- valid
  Hoplitis premordica Griswold, 1998 -- valid
  Horisme incana Swett, 1917 -- valid
  Hornia mexicana blomi MacSwain, 1958 -- valid
  Horornis diphone canturians (Swinhoe, 1860) -- valid
  Horornis fortipes robustipes (Swinhoe, 1866) -- valid
  Hsunycterini Parlos, Timm, Swier, Zeballos and Baker, 2014 -- valid
  Hsunycteris Parlos, Timm, Swier, Zeballos and Baker, 2014 -- valid
  Hulstina exhumata (Swett, 1918) -- valid
  Hyale nigra (Haswell, 1879) -- valid
  Hydriomena barnesata Swett, 1909 -- valid
  Hydriomena chiricahuata Swett, 1909 -- valid
  Hydriomena cochiseata Swett, 1909 -- valid
  Hydriomena crokeri Swett, 1910 -- valid
  Hydriomena edenata Swett, 1909 -- valid
  Hydriomena henshawi Swett, 1912 -- valid
  Hydriomena irata Swett, 1910 -- valid
  Hydriomena macdunnoughi Swett, 1918 -- valid
  Hydriomena perfracta Swett, 1910 -- valid -- Shattered Hydriomena Moth
  Hydriomena transfigurata Swett, 1912 -- valid -- Transfigured Hydriomena
  Hydroides elegans (Haswell, 1883) -- valid
  Hydropotes Swinhoe, 1870 -- valid
  Hydropotes inermis Swinhoe, 1870 -- valid -- Chinese Water Deer, Chinese water deer
  Hydropotes inermis inermis Swinhoe, 1870 -- valid
  Hylaeus megalotis (Swenk & Cockerell, 1910) -- valid
  Hylarana faber (Ohler, Swan and Daltry, 2002) -- valid
  Hylastes longicollis Swaine, 1918 -- valid
  Hylastes ruber Swaine, 1915 -- valid
  Hyles perkinsi (Swezey, 1920) -- valid -- Perkins' Sphinx
  Hyles wilsoni perkinsi (Swezey, 1920) -- invalid
  Hylesinus californicus (Swaine, 1916) -- valid
  Hylesinus criddlei (Swaine, 1918) -- valid
  Hyliota Swainson, 1837 -- valid
  Hyliota flavigaster Swainson, 1837 -- valid -- Yellow-bellied Hyliota
  Hyliota flavigaster flavigaster Swainson, 1837 -- valid
  Hylocitrea bonensis (A. B. Meyer & Wiglesworth, 1894) -- valid -- Yellow-flanked Whistler
  Hylocitrea bonensis bonensis (A. B. Meyer & Wiglesworth, 1894) -- valid
  Hylocitrea bonensis bonthaina (A. B. Meyer & Wiglesworth, 1896) -- valid
  Hylurgopinus Swaine, 1918 -- valid
  Hylurgops knausi Swaine, 1917 -- valid
  Hypena laysanensis (Swezey, 1914) -- valid -- Laysan dropseed noctuid moth
  Hypena newelli (Swezey, 1912) -- valid
  Hyphydrus lyratus Swartz, 1808 -- valid
  Hyphydrus lyratus lyratus Swartz, 1808 -- valid
  Hyposmocoma (Euperissus) coprosmae (Swezey, 1920) -- invalid
  Hyposmocoma (Euperissus) ekaha Swezey, 1910 -- invalid
  Hyposmocoma (Euperissus) ferruginea (Swezey, 1915) -- invalid
  Hyposmocoma (Euperissus) pittospori (Swezey, 1954) -- invalid
  Hyposmocoma (Euperissus) pritchardiae (Swezey, 1933) -- invalid
  Hyposmocoma (Euperissus) sideroxyloni (Swezey, 1932) -- invalid
  Hyposmocoma (Euperissus) trivitella (Swezey, 1913) -- invalid
  Hyposmocoma (Hyposmocoma) communis (Swezey, 1946) -- invalid
  Hyposmocoma (Hyposmocoma) elegantula (Swezey, 1934) -- invalid
  Hyposmocoma (Hyposmocoma) neckerensis (Swezey, 1926) -- invalid
  Hyposmocoma (Hyposmocoma) trifasciata (Swezey, 1915) -- invalid
  Hyposmocoma communis (Swezey, 1946) -- valid
  Hyposmocoma coprosmae (Swezey, 1920) -- valid
  Hyposmocoma ekaha Swezey, 1910 -- valid
  Hyposmocoma elegantula (Swezey, 1934) -- valid
  Hyposmocoma ferruginea (Swezey, 1915) -- valid
  Hyposmocoma neckerensis (Swezey, 1926) -- valid
  Hyposmocoma pittospori (Swezey, 1954) -- valid
  Hyposmocoma pritchardiae (Swezey, 1933) -- valid
  Hyposmocoma sideroxyloni (Swezey, 1932) -- valid
  Hyposmocoma trifasciata (Swezey, 1915) -- valid
  Hyposmocoma trivitella (Swezey, 1913) -- valid
  Hypsipetes leucocephalus perniger Swinhoe, 1870 -- valid
  Hyria elongata Swainson, 1841 -- invalid
  Hyridella Swainson, 1840 -- valid
  Hyriidae Swainson, 1840 -- valid
  Hyriinae Swainson, 1840 -- valid
  Hyriini Swainson, 1840 -- valid
  Hyrioidea Swainson, 1840 -- valid
  Hystrix brachyura subcristata Swinhoe, 1870 -- valid
  Iathrippa inerme (Haswell, 1881) -- valid
  Ichthyscopus Swainson, 1839 -- valid
  Ichtycallus Swainson, 1839 -- invalid
  Icterus bullockii (Swainson, 1827) -- valid -- Bolsero calandria, Bullock's Oriole
  Icterus cayanensis tibialis Swainson, 1838 -- valid
  Icterus cucullatus Swainson, 1827 -- valid -- Bolsero encapuchado, Hooded Oriole
  Icterus cucullatus cucullatus Swainson, 1827 -- valid
  Icterus galbula bullocki (Swainson, 1827) -- invalid
  Icterus galbula bullockii (Swainson, 1827) -- invalid
  Idiopidonia Swaine and Hopping, 1928 -- valid
  Idiops bombayensis Siliwal, Molur & Biswas, 2005 -- valid
  Ilisha indica (Swainson, 1839) -- invalid
  Ilisha megaloptera (Swainson, 1839) -- valid -- alose ŕ gros yeux, bigeye ilisha, sardineta ojigrande
  Ilisoa Griswold, 1987 -- valid
  Ilisoa conjugalis Griswold, 2001 -- valid
  Ilisoa hawequas Griswold, 1987 -- valid
  Ilisoa knysna Griswold, 1987 -- valid
  Indanthidium Michener & Griswold, 1994 -- valid
  Indanthidium crenulaticauda Michener & Griswold, 1994 -- valid
  Inuus sancti-johannis Swinhoe, 1866 -- invalid
  Inuus sanctijohannis Swinhoe, 1866 -- invalid
  Ips borealis Swaine, 1911 -- valid
  Ips borealis borealis Swaine, 1911 -- valid
  Ips hunteri Swaine, 1917 -- valid
  Ips knausi Swaine, 1915 -- valid
  Ips lecontei Swaine, 1924 -- valid
  Ips perroti Swaine, 1915 -- valid
  Ips pilifrons Swaine, 1912 -- valid
  Ips pilifrons pilifrons Swaine, 1912 -- valid
  Ips tridens engelmanni Swaine, 1917 -- valid
  Iridea Swainson, 1840 -- invalid
  Iridina ovata Swainson, 1823 -- invalid
  Iridina striata Swainson, 1823 -- invalid
  Iridinidae Swainson, 1840 -- valid
  Iridininae Swainson, 1840 -- valid
  Isela Griswold, 1985 -- valid
  Isela okuncana Griswold, 1985 -- valid
  Isicabu Griswold, 1987 -- valid
  Isicabu henriki Griswold, 2001 -- valid
  Isicabu kombo Griswold, 2001 -- valid
  Isicabu margrethae Griswold, 2001 -- valid
  Isicabu reavelli Griswold, 1987 -- valid
  Isicabu zuluensis Griswold, 1987 -- valid
  Isocladus laevis (Haswell, 1881) -- valid
  Itame anataria (Swett, 1913) -- invalid
  Itame andersoni (Swett, 1916) -- invalid
  Ixobrychus eurhythmus (Swinhoe, 1873) -- valid -- Schrenk's Bittern, Von Schrenck's Bittern
  Ixoreus naevius meruloides (Swainson, 1832) -- valid
  Ixos mcclellandii holtii (Swinhoe, 1861) -- valid
  Jabouilleia naungmungensis Rappole, Renner, Shwe & Sweet, 2005 -- valid
  Janthina globosa Swainson, 1822 -- valid -- elongate janthina
  Judolia knulli (Swaine and Hopping, 1928) -- invalid
  Julis clepsydralis Smith and Swain, 1882 -- invalid
  Julis grayii Swainson, 1839 -- invalid
  Julis verticalis Smith and Swain, 1882 -- invalid
  Kalliapseudes obtusifrons (Haswell, 1882) -- valid
  Kelleria rubimaculata Krishnaswamy, 1952 -- valid
  Kempynus digoniostigma Oswald, 1994 -- valid
  Kempynus tjederi Oswald, 1994 -- valid
  Kentuckomys Koenigswald and L. D. Martin, 1984 -- invalid
  Kirtlandia laciniata (Swain in Jordan and Gilbert, 1883) -- invalid -- silverfish, whitebait
  Kliopsyllus arenicolus (Krishnaswamy, 1957) -- valid
  Kliopsyllus capensis (Krishnaswamy, 1957) -- valid
  Kliopsyllus minutus (Krishnaswamy, 1957) -- valid
  Kliopsyllus pseudogracilis (Krishnaswamy, 1957) -- valid
  Kliopsyllus wilsoni (Krishnaswamy, 1957) -- valid
  Kubwa Griswold, 2001 -- valid
  Kubwa singularis Griswold, 2001 -- valid
  Kulalania Griswold, 1990 -- valid
  Kulalania antiqua Griswold, 1990 -- valid
  Labrisomus Swainson, 1839 -- valid
  Laccoptera (Sindiolina) Swietojanska, 2001 -- valid
  Laccoptera cheni Swietojanska, 2001 -- valid
  Laccoptera depressa Swietojanska, 2001 -- valid
  Laccoptera meghalayaensis Swietojanska, 2001 -- valid
  Lactophrys Swainson, 1839 -- valid -- three-angled trunkfishes
  Laevicardium Swainson, 1840 -- valid
  Lagocephalus Swainson, 1839 -- valid -- rabbitfishes
  Lagopus lagopus alascensis Swarth, 1926 -- valid
  Lalage tricolor (Swainson, 1825) -- valid -- White-winged Triller
  Lamaika Griswold, 1990 -- valid
  Lamaika distincta Griswold, 1990 -- valid
  Lampornis Swainson, 1827 -- valid -- Blue-throated Hummingbirds
  Lampornis amethystinus Swainson, 1827 -- valid -- Amethyst-throated Hummingbird, Amethyst-throated Mountaingem, Colibrí garganta amatista
  Lampornis amethystinus amethystinus Swainson, 1827 -- valid
  Lamproscapha Swainson, 1840 -- valid
  Lamprotornis chloropterus Swainson, 1838 -- valid -- Lesser Blue-eared Starling
  Lamprotornis nitens phoenicopterus Swainson, 1838 -- valid
  Lamprotornis splendidus chrysonotis Swainson, 1837 -- valid
  Laniisoma Swainson, 1832 -- valid
  Lanius ludovicianus excubitorides (Swainson, 1832) -- valid
  Lanius meridionalis elegans Swainson, 1832 -- valid
  Laophonte pseudooculata Krishnaswamy, 1959 -- valid
  Larinia jaysankari Biswas, 1984 -- valid
  Larinia teiraensis Biswas & Biswas, 2007 -- valid
  Larinostelis Michener & Griswold, 1994 -- valid
  Larinostelis scapulata Michener & Griswold, 1994 -- valid
  Larus saundersi (Swinhoe, 1871) -- invalid -- Saunders's Gull
  Lasioglossum noctivaga Linsley & MacSwain, 1962 -- valid
  Lathys mussooriensis Biswas & Roy, 2008 -- valid
  Latiaxis Swainson, 1840 -- valid
  Leiodon Swainson, 1839 -- valid
  Leioplegma Reiswig & Tsurumi, 1996 -- valid
  Leiothrichidae Swainson, 1832 -- valid
  Leiothrix Swainson, 1832 -- valid -- Leiothrixes
  Leisomus Swainson, 1839 -- invalid
  Leiurus Swainson, 1839 -- invalid
  Leiurus macrophthalmus (Swainson, 1839) -- invalid
  Lemmus harroldi Swarth, 1931 -- invalid
  Lempijius erythrocampe Swinhoe, 1874 -- invalid
  Lepidion Swainson, 1838 -- valid
  Lepidocolaptes leucogaster (Swainson, 1827) -- valid -- Trepatroncos escarchado, White-striped Woodcreeper
  Lepidocolaptes leucogaster leucogaster (Swainson, 1827) -- valid
  Lepidonotus aeololepis Haswell, 1883 -- valid
  Leptanthura diemenensis (Haswell, 1884B) -- valid
  Leptocoma sericea talautensis (A. B. Meyer & Wiglesworth, 1894) -- valid
  Leptodon forbesi (Swann, 1922) -- valid -- White-collared Kite
  Leptolalax pluvialis Ohler, Marquis, Swan and Grosjean, 2000 -- valid
  Leptoscarus Swainson, 1839 -- valid
  Leptoteleia bengalensis Saraswat, 1982 -- valid
  Leptoteleia peninsularis Saraswat, 1982 -- valid
  Leptotila Swainson, 1837 -- valid -- White-tipped Doves
  Lepus hainanus Swinhoe, 1870 -- valid -- Hainan Hare
  Lessonia Swainson, 1832 -- valid
  Leucosticte Swainson, 1832 -- valid -- Rosy Finches
  Leucosticte tephrocotis (Swainson, 1832) -- valid -- Gray-crowned Rosy-Finch, Grey-crowned Rosy Finch
  Leucosticte tephrocotis tephrocotis (Swainson, 1832) -- valid
  Lewinia pectoralis brachipus (Swainson, 1838) -- valid
  Ligumia Swainson, 1840 -- valid
  Ligyrocoris barberi Sweet, 1986 -- valid
  Ligyrocoris caricis Sweet, 1963 -- valid
  Limnocorax flavirostra (Swainson, 1837) -- invalid
  Linsleya MacSwain, 1951 -- valid
  Linuche unguiculata (Swartz, 1788) -- valid -- thimble jellyfish, thimble jellyfish
  Liocichla Swinhoe, 1877 -- valid
  Liocichla steerii Swinhoe, 1877 -- valid -- Steere's Liocichla
  Lithognathus Swainson, 1839 -- valid
  Liza Jordan and Swain, 1884 -- valid -- true lizas
  Lobophora simsata Swett, 1920 -- valid
  Lochmias Swainson, 1827 -- valid
  Locustella tacsanowskia Swinhoe, 1871 -- valid
  Lonchura atricapilla formosana (Swinhoe, 1865) -- valid
  Lonchura cucullata (Swainson, 1837) -- valid -- Bronze Mannikin
  Lonchura cucullata cucullata (Swainson, 1837) -- valid
  Lonchura punctulata topela (Swinhoe, 1863) -- valid
  Lophoplusia giffardi (Swezey, 1913) -- valid
  Lophoplusia violacea (Swezey, 1920) -- valid
  Lordhowea Griswold, 2001 -- valid
  Lordhowea nesiota Griswold, 2001 -- valid
  Loriculus amabilis ruber A. B. Meyer & Wiglesworth, 1896 -- valid
  Loxoconcha matagordensis Swain, 1955 -- valid
  Loxoconcha sculptoides Swain, 1967 -- valid
  Loxoconcha tamarindoidea Swain, 1967 -- valid
  Lucidella Swainson, 1840 -- valid
  Lurocalis semitorquatus noctivagus Griswold, 1936 -- invalid
  Luscinia sibilans (Swinhoe, 1863) -- valid -- Rufous-tailed Robin
  Lutra canadensis interior Swenk, 1920 -- invalid
  Lychnocystis Reiswig, 2002 -- valid
  Lycodon tiwarii Biswas and Sanyal, 1965 -- valid -- Andaman Wolf Snake
  Lycosa arambagensis Biswas & Biswas, 1992 -- valid
  Lygodactylus klugei (H. Smith, Martin and Swain, 1977) -- valid
  Lygodactylus wetzeli (H. Smith, Martin and Swain, 1977) -- valid
  Lyrurus Swainson, 1832 -- valid
  Lythrulon Jordan and Swain, 1884 -- invalid
  Macaca cyclopis (Swinhoe, 1863) -- valid -- Formosan Rock Macaque, Taiwan macaque, Taiwanese Macaque
  Macaria anataria (Swett, 1913) -- invalid
  Macaria andersoni (Swett, 1916) -- invalid
  Macaria fieldi Swett, 1916 -- invalid
  Macaria grossbecki Swett, 1916 -- invalid
  Macaria oweni (Swett, 1907) -- valid
  Machilinus nevadensis Sweetman, 1937 -- invalid
  Macrocephalus Swederus, 1787 -- valid
  Macrocephalus cimicoides Swederus, 1787 -- valid
  Macrodipteryx Swainson, 1837 -- invalid
  Macronyx Swainson, 1827 -- valid
  Macropis clypeata Swenk, 1907 -- invalid
  Macropygia Swainson, 1837 -- valid
  Macropygia unchall minor Swinhoe, 1870 -- valid
  Macroteleia boriviliensis Saraswat, 1982 -- valid
  Macroteleia lamba Saraswat, 1978 -- valid
  Macroteleia livingstoni Saraswat, 1982 -- valid
  Macrothele yani Xu, Yin & Griswold, 2002 -- valid
  Malaconotidae Swainson, 1824 -- valid
  Malaconotus Swainson, 1824 -- valid
  Malacorhynchus Swainson, 1831 -- valid
  Malaika delicatula Griswold, 1990 -- valid
  Malia grata recondita A. B. Meyer & Wiglesworth, 1894 -- valid
  Malimbus rubricollis (Swainson, 1838) -- valid -- Red-headed Malimbe
  Malimbus rubricollis rubricollis (Swainson, 1838) -- valid
  Marmota monax ochracea Swarth, 1911 -- valid
  Marmota vancouverensis Swarth, 1911 -- valid -- Vancouver Island Marmot, Vancouver Marmot
  Marpissa anusuae Tikader & Biswas, 1981 -- valid
  Marpissa arambagensis Biswas & Biswas, 1992 -- valid
  Marpissa endenae Biswas & Biswas, 1992 -- valid
  Marpissa kalighatensis Biswas & Biswas, 1992 -- valid
  Marpissa manipuriensis Biswas & Biswas, 2004 -- valid
  Marpissa mizoramensis Biswas & Biswas, 2007 -- valid
  Marpissa nutanae Biswas & Biswas, 1984 -- valid
  Marpissa pauariensis Biswas & Roy, 2008 -- valid
  Marpissa prathamae Biswas & Biswas, 1984 -- valid
  Marpissa proszynskii Biswas & Begum, 1999 -- valid
  Marpissa tikaderi Biswas, 1984 -- valid
  Martes chrysospila Swinhoe, 1866 -- invalid
  Martes flavigula chrysospila Swinhoe, 1866 -- valid -- Formosan yellow-throated marten
  Martes flavigula xanthospila Swinhoe, 1870 -- invalid
  Maymena kehen Miller, Griswold & Yin, 2009 -- valid
  Maymena paquini Miller, Griswold & Yin, 2009 -- valid
  Megaceryle maxima gigantea (Swainson, 1837) -- valid
  Megachile longuisetosa Gonzalez & Griswold, 2007 -- valid
  Megadomus Swainson, 1840 -- invalid
  Megalaima oorti faber Swinhoe, 1870 -- valid
  Megalaima virens marshallorum Swinhoe, 1870 -- valid
  Megalomastoma Swainson, 1840 -- valid
  Megamyrmaekion kajalae Biswas & Biswas, 1992 -- valid
  Megokris granulosus (Haswell, 1879) -- valid -- camarón fijador de granos, coarse shrimp, crevette gambri grenue
  Meiglyptes Swainson, 1837 -- valid
  Melaenornis edolioides (Swainson, 1837) -- valid -- Northern Black Flycatcher
  Melaenornis edolioides edolioides (Swainson, 1837) -- valid
  Melanerpes Swainson, 1832 -- valid -- Melanerpine Woodpeckers
  Melanerpes formicivorus (Swainson, 1827) -- valid -- Acorn Woodpecker, Carpintero bellotero
  Melanerpes formicivorus formicivorus (Swainson, 1827) -- valid
  Melanerpes formicivorus martirensis (Grinnell and Swarth, 1926) -- invalid
  Melanitta americana (Swainson, 1832) -- invalid -- American Scoter
  Melanitta nigra americana (Swainson, 1832) -- valid
  Melanotis caerulescens (Swainson, 1827) -- valid -- Blue Mockingbird, Mulato azul
  Melanotis caerulescens caerulescens (Swainson, 1827) -- valid
  Melecta alexanderi Griswold & Parker, 1999 -- valid
  Melete Swainson, 1831 -- valid
  Melichthys Swainson, 1839 -- valid
  Meliphaga lewinii (Swainson, 1837) -- valid -- Lewin's Honeyeater
  Meliphaga lewinii lewinii (Swainson, 1837) -- valid
  Melogale moschata subaurantiaca (Swinhoe, 1862) -- valid
  Melophus Swainson, 1837 -- invalid
  Melozone crissalis bullata (Grinnell & Swarth, 1926) -- valid
  Melozone crissalis petulans (Grinnell & Swarth, 1926) -- valid
  Melozone fusca (Swainson, 1827) -- valid -- Canyon Towhee
  Melozone fusca fusca (Swainson, 1827) -- valid
  Merops orientalis viridissimus Swainson, 1837 -- valid
  Mesanthura maculata (Haswell, 1881) -- valid
  Mesanthura miersi (Haswell, 1884B) -- valid
  Mesonerilla armoricana Swedmark, 1959 -- valid
  Mesonerilla fagei Swedmark, 1959 -- valid
  Metacmaeops vittata (Swederus, 1787) -- valid
  Metapenaeopsis novaeguineae (Haswell, 1879) -- valid -- camarón gamuza norteńo, crevette chamois nordique, northern velvet prawn, northern velvet shrimp
  Metapenaeopsis palmensis (Haswell, 1879) -- valid -- camarón gamuza sureńo, crevette chamois méridionale, southern velvet prawn, southern velvet shrimp
  Metapenaeus macleayi (Haswell, 1879) -- valid -- camarón maclayo, crevette de maclay, eastern school shrimp, school prawn, white river prawn
  Metapenaeus mastersii (Haswell, 1878) -- invalid
  Metapenaeus palmensis (Haswell, 1879) -- invalid
  Micralictoides chaenactidis Bohart & Griswold, 1987 -- valid
  Micralictoides dinoceps Bohart & Griswold, 1987 -- valid
  Micralictoides grossus Bohart & Griswold, 1987 -- valid
  Micralictoides linsleyi Bohart & Griswold, 1987 -- valid
  Micralictoides quadriceps Bohart & Griswold, 1987 -- valid
  Micrastur buckleyi Swann, 1919 -- valid -- Buckley's Forest Falcon
  Microbembex elegans Griswold, 1996 -- valid
  Microcanthus Swainson, 1839 -- valid
  Microctenochira brasiliensis Swietojanska and Borowiec, 1999 -- valid
  Microctenochira chapada Swietojanska and Borowiec, 1995 -- valid
  Microctenochira obscurata Swietojanska and Borowiec, 1999 -- valid
  Microctenochira panamensis Swietojanska and Borowiec, 1999 -- valid
  Microhierax caerulescens burmanicus Swann, 1920 -- valid
  Micromus remiformis Oswald, 1987 -- valid
  Microstigmata amatola Griswold, 1985 -- valid
  Microstigmata lawrencei Griswold, 1985 -- valid
  Microstigmata ukhahlamba Griswold, 1985 -- valid
  Microthurge furcatus Griswold, 1991 -- valid
  Microtus coronarius Swarth, 1911 -- invalid -- Coronation Island vole
  Microtus longicaudus coronarius Swarth, 1911 -- invalid -- Coronation Island vole
  Microtus mordax littoralis Swarth, 1933 -- invalid
  Mimus parvulus wenmani (Swarth, 1931) -- valid
  Mirafra javanica parva Swinhoe, 1871 -- valid
  Misumenoides naginae Biswas & Roy, 2008 -- valid
  Mitridae Swainson, 1931 -- valid
  Mogera insularis (Swinhoe, 1863) -- valid -- Insular Mole
  Mogera insularis insularis (Swinhoe, 1863) -- valid
  Moggridgea ampullata Griswold, 1987 -- valid
  Moggridgea anactenidia Griswold, 1987 -- valid
  Moggridgea eremicola Griswold, 1987 -- valid
  Moggridgea loistata Griswold, 1987 -- valid
  Moggridgea nesiota Griswold, 1987 -- valid
  Moggridgea socotra Griswold, 1987 -- valid
  Moggridgea tanypalpa Griswold, 1987 -- valid
  Moggridgea teresae Griswold, 1987 -- valid
  Moggridgea verruculata Griswold, 1987 -- valid
  Molacanthus Swainson, 1839 -- invalid
  Molacanthus pallasii Swainson, 1839 -- invalid
  Molothrus Swainson, 1832 -- valid -- Cowbirds
  Momotus mexicanus Swainson, 1827 -- valid -- Momoto corona café, Russet-crowned Motmot
  Momotus mexicanus mexicanus Swainson, 1827 -- valid
  Momotus momota bahamensis (Swainson, 1838) -- valid
  Monacanthus (Cantherhines) Swainson, 1839 -- invalid
  Monacanthus (Chaetodermis) Swainson, 1839 -- invalid
  Monilea Swainson, 1840 -- valid
  Monocanthus (Trichoderma) Swainson, 1839 -- invalid
  Monocanthus nasutus Swainson, 1839 -- invalid
  Monticola gularis (Swinhoe, 1863) -- valid -- White-throated Rock Thrush
  Mormyrynchus Swainson, 1839 -- invalid
  Mormyrynchus gronovii Swainson, 1839 -- invalid
  Mosu Miller, Griswold & Yin, 2009 -- valid
  Mosu huogou Miller, Griswold & Yin, 2009 -- valid
  Mosu nujiang Miller, Griswold & Yin, 2009 -- valid
  Motacilla alba baicalensis Swinhoe, 1871 -- valid -- Swinhoe's Wagtail
  Motacilla alba ocularis Swinhoe, 1860 -- valid -- Streak-eyed Wagtail
  Motacilla tschutschensis taivana (Swinhoe, 1863) -- valid
  Muricanthus Swainson, 1840 -- invalid
  Mus argenteus Swinhoe, 1870 -- invalid
  Mus badius Swinhoe, 1870 -- invalid
  Mus canna Swinhoe, 1871 -- invalid
  Mus coxinga Swinhoe, 1871 -- invalid
  Mus ningpoensis Swinhoe, 1870 -- invalid
  Musca monoculus Swederus, 1787 -- invalid
  Muscicapa griseisticta (Swinhoe, 1861) -- valid -- Gray-spotted Flycatcher, Gray-streaked Flycatcher, Grey-streaked Flycatcher
  Muscicapa ruficauda Swainson, 1838 -- valid -- Rusty-tailed Flycatcher
  Mutelidae Swainson, 1840 -- invalid
  Myadestes Swainson, 1838 -- valid -- Hawaiian Thrushes, Solitaires
  Myadestes genibarbis Swainson, 1838 -- valid -- Rufous-throated Solitaire
  Myadestes genibarbis genibarbis Swainson, 1838 -- valid
  Mycteroperca phenax Jordan and Swain, 1884 -- valid -- abadejo garropa, scamp
  Myiarchus barbirostris (Swainson, 1827) -- valid -- Sad Flycatcher
  Myioborus miniatus (Swainson, 1827) -- valid -- Chipe de montańa, Paruline ardoisée, Slate-throated Redstart, Slate-throated Whitestart
  Myioborus miniatus miniatus (Swainson, 1827) -- valid
  Myioborus pictus (Swainson, 1829) -- valid -- Chipe ala blanca, Painted Redstart, Painted Whitestart, Paruline ŕ ailes blanches
  Myioborus pictus pictus (Swainson, 1829) -- valid
  Myiomela leucura montium Swinhoe, 1864 -- valid
  Myiopagis caniceps (Swainson, 1835) -- valid -- Gray Elaenia, Grey Elaenia
  Myiopagis caniceps caniceps (Swainson, 1835) -- valid
  Myiophonus blighi (Holdsworth, 1872) -- invalid
  Myophonus blighi (Holdsworth, 1872) -- valid
  Myriozoum australiensis Haswell, 1881 -- invalid
  Myrmarachne calcuttaensis Biswas, 1984 -- valid
  Myrmeciza longipes (Swainson, 1825) -- valid -- White-bellied Antbird
  Myrmeciza longipes longipes (Swainson, 1825) -- valid
  Mysca corrugata Swainson, 1840 -- invalid
  Mysmena bizi Miller, Griswold & Yin, 2009 -- valid
  Mysmena changouzi Miller, Griswold & Yin, 2009 -- valid
  Mysmena goudao Miller, Griswold & Yin, 2009 -- valid
  Mysmena haban Miller, Griswold & Yin, 2009 -- valid
  Mysmena jinlong Miller, Griswold & Yin, 2009 -- valid
  Mysmena shibali Miller, Griswold & Yin, 2009 -- valid
  Myza A. B. Meyer & Wiglesworth, 1895 -- valid
  Myza celebensis (A. B. Meyer & Wiglesworth, 1894) -- valid -- Dark-eared Myza
  Myza celebensis celebensis (A. B. Meyer & Wiglesworth, 1894) -- valid
  Myza celebensis meridionalis (A. B. Meyer & Wiglesworth, 1896) -- valid
  Myza sarasinorum A. B. Meyer & Wiglesworth, 1895 -- valid -- White-eared Myza
  Myza sarasinorum sarasinorum A. B. Meyer & Wiglesworth, 1895 -- valid
  Naia Swainson, 1840 -- invalid
  Naidea Swainson, 1840 -- invalid
  Namaquarachne Griswold, 1990 -- valid
  Namaquarachne angulata Griswold, 1990 -- valid
  Namaquarachne khoikhoiana Griswold, 1990 -- valid
  Namaquarachne thaumatula Griswold, 1990 -- valid
  Namaquarachne tropata Griswold, 1990 -- valid
  Nangra assamensis Sen and Biswas, 1994 -- valid
  Nasusina albida Cassino and Swett, 1923 -- invalid
  Nemipterus Swainson, 1839 -- valid -- besugos
  Nemognatha cantharidis MacSwain, 1951 -- valid
  Nemognatha hurdi MacSwain, 1951 -- valid
  Nemognatha soror MacSwain, 1951 -- valid
  Neobellamira Swaine and Hopping, 1928 -- valid
  Neocaudites henryhowei (McKenzie and Swain, 1967) -- valid
  Neochromis rufocaudalis Seehausen and Bouton in Seehausen, Lippitsch, Bouton and Swennes, 1998 -- valid
  Neocytherideis surensis Swain and Gilby, 1967 -- valid
  Neofelis nebulosa brachyura (Swinhoe, 1862) -- valid
  Neohierax Swann, 1922 -- invalid
  Neolarra alexanderi Griswold & Parker, 1999 -- valid
  Neolarra ute Griswold & Parker, 1999 -- valid
  Neonagusta Ambrose and Kumaraswami, 1992 -- valid
  Neonagusta bituberculata Ambrose and Kumaraswami, 1992 -- valid
  Neoscona bomdilaensis Biswas & Biswas, 2006 -- valid
  Nephila dirangensis Biswas & Biswas, 2006 -- valid
  Nepytia juabata Cassino and Swett, 1922 -- valid
  Nepytia lagunata Cassino and Swett, 1923 -- valid
  Nilaus Swainson, 1827 -- valid
  Niltava vivida (Swinhoe, 1864) -- valid -- Vivid Niltava
  Niltava vivida vivida (Swinhoe, 1864) -- valid
  Nitidella Swainson, 1840 -- valid
  Niviventer coninga (Swinhoe, 1864) -- valid -- Spiny Taiwan Niviventer
  Niviventer coxingi (Swinhoe, 1864) -- invalid
  Nomada amorphae Swenk, 1913 -- valid
  Nomada angulata Swenk, 1913 -- valid
  Nomada aprilina Swenk, 1913 -- valid
  Nomada arenicola Swenk, 1913 -- valid
  Nomada asteris Swenk, 1913 -- valid
  Nomada besseyi Swenk, 1913 -- valid
  Nomada bicrista Swenk, 1913 -- valid
  Nomada bisetosa Swenk, 1913 -- valid
  Nomada citrina flavomargina Swenk, 1913 -- invalid
  Nomada citrina flavomarginata Swenk, 1913 -- valid
  Nomada dawsoni Swenk, 1912 -- invalid
  Nomada fuscicincta Swenk, 1915 -- valid
  Nomada hydrophylli Swenk, 1915 -- valid
  Nomada idahoensis Swenk, 1913 -- valid
  Nomada laramiensis Swenk, 1913 -- valid
  Nomada maculiventer Swenk, 1915 -- valid
  Nomada mediana Swenk, 1913 -- valid
  Nomada nigrociliata Swenk, 1913 -- valid
  Nomada nigrofasciata Swenk, 1913 -- valid
  Nomada obtusata Swenk, 1915 -- valid
  Nomada ochrohirta Swenk, 1913 -- valid
  Nomada pallidelutea Swenk, 1915 -- valid
  Nomada pallidipicta Swenk, 1913 -- valid
  Nomada parallela Swenk, 1913 -- valid
  Nomada rohweri aureopilosa Swenk, 1913 -- valid
  Nomada rubi Swenk, 1915 -- valid
  Nomada salicicola Swenk, 1913 -- valid
  Nomada simplicicoxa Swenk, 1915 -- valid
  Nomada siouxensis Swenk, 1913 -- valid
  Nomada subnigrocincta Swenk, 1915 -- valid
  Nomada subpacata Swenk, 1913 -- valid
  Nomada subrubi Swenk, 1915 -- valid
  Nomada superba malvastri Swenk, 1913 -- valid
  Nomada tricurta Swenk, 1915 -- valid
  Nomada ultimella septentrio Swenk, 1913 -- invalid
  Nomada ultimella septentrionalis Swenk, 1913 -- valid
  Nomada utensis Swenk, 1913 -- valid
  Nomada velutina Swenk, 1913 -- valid
  Nomada vicina stevensi Swenk, 1913 -- valid
  Nomada wyomingensis Swenk, 1913 -- valid
  Nomada ziziae Swenk, 1915 -- valid
  Nomadopsis helianthi (Swenk and Cockerell, 1907) -- invalid
  Nomadopsis hesperia (Swenk and Cockerell, 1907) -- invalid
  Nomadopsis hesperia hesperia (Swenk and Cockerell, 1907) -- invalid
  Nomenia obsoleta Swett, 1916 -- invalid
  Nomerobius cuspidatus Oswald, 1990 -- valid
  Nomerobius spinosus Oswald, 1990 -- valid
  Notosacantha banaszkiewiczae Swietojanska and Stach, 2011 -- valid
  Notosacantha bezdeki Swietojanska, 2002 -- valid
  Notosacantha chandrapurensis Swietojanska, Ghate and Marathe, 2001 -- valid
  Notosacantha diabolica Swietojanska, 2001 -- valid
  Notosacantha dohrni Swietojanska, 2001 -- valid
  Notosacantha halmaherana Swietojanska, 2006 -- valid
  Notosacantha kantneri Swietojanska and Borowiec, 1999 -- valid
  Notosacantha kinabaluensis Swietojanska, 2001 -- valid
  Notosacantha maduraensis Swietojanska, 2006 -- valid
  Notosacantha malaysiana Swietojanska, 2004 -- valid
  Notosacantha matsuzawai Swietojanska, 2001 -- valid
  Notosacantha mentawaiensis Swietojanska and Stach, 2011 -- valid
  Notosacantha minutissima Swietojanska, 2000 -- valid
  Notosacantha multicostata Swietojanska, 2000 -- valid
  Notosacantha multimaculata Swietojanska, 2000 -- valid
  Notosacantha myanmarensis Swietojanska, 2004 -- valid
  Notosacantha octomaculata Swietojanska, 2000 -- valid
  Notosacantha quadrimaculata Swietojanska, 2000 -- valid
  Notosacantha riedeli Swietojanska, 2002 -- valid
  Notosacantha rubripennis Swietojanska, 2000 -- valid
  Notosacantha sabahensis Borowiec and Swietojanska, 1999 -- valid
  Notosacantha sandakanensis Swietojanska, 2001 -- valid
  Notosacantha sarawaiensis Swietojanska, 2001 -- valid
  Notosacantha sumbawaensis Swietojanska and Borowiec, 1999 -- valid
  Notosacantha viridipennis Swietojanska, 2003 -- valid
  Notosacantha warchalowskii Swietojanska and Sekerka, 2007 -- valid
  Noturus funebris Gilbert and Swain in Gilbert, 1891 -- valid -- black madtom
  Nusalala brachyptera Oswald, 1997 -- valid
  Nuttallornis borealis (Swainson, 1832) -- invalid
  Oberea tripunctata (Swederus, 1787) -- valid -- dogwood twig borer
  Oceanodroma monorhis (Swinhoe, 1867) -- valid -- Océanite de Swinhoe, Swinhoe's Storm Petrel, Swinhoe's Storm-Petrel
  Ochetostoma natalense Biseswar, 1988 -- valid
  Ochreriades rozeni Griswold, 1994 -- valid
  Octopus abaculus Norman and Sweeney, 1997 -- valid
  Octopus nocturnus Norman and Sweeney, 1997 -- valid
  Octopus pumilus Norman and Sweeney, 1997 -- valid
  Ocyalus latirostris (Swainson, 1838) -- valid -- Band-tailed Oropendola
  Odyneropsis apache Griswold & Parker, 1999 -- valid
  Oedignatha shillongensis Biswas & Majumder, 1995 -- valid
  Oena Swainson, 1837 -- valid
  Ogulnius barbandrewsi Miller, Griswold & Yin, 2009 -- valid
  Oligotrophus apicis Appleby and Neiswander, 1965 -- invalid
  Olios durlaviae Biswas & Raychaudhuri, 2005 -- valid
  Olios tikaderi Kundu, Biswas & Raychaudhuri, 1999 -- valid
  Olivella Swainson, 1831 -- valid
  Oncocephalus enallus Swanson, 2017 -- valid
  Oneirodes clarkei Swinney and Pietsch, 1988 -- valid
  Onychoprion anaethetus melanopterus (Swainson, 1837) -- valid
  Ophisoma acuta Swainson, 1839 -- invalid
  Orexita minima Borowiec and Swietojanska, 1997 -- valid
  Oriolus brachyrhynchus Swainson, 1837 -- invalid
  Oriolus brachyrynchus Swainson, 1837 -- valid -- Western Oriole
  Oriolus brachyrynchus brachyrynchus Swainson, 1837 -- valid
  Oriolus chinensis boneratensis A. B. Meyer & Wiglesworth, 1896 -- valid
  Oriolus chinensis melanisticus A. B. Meyer & Wiglesworth, 1894 -- valid
  Oriolus chinensis sangirensis A. B. Meyer & Wiglesworth, 1898 -- valid
  Oriolus traillii ardens (Swinhoe, 1862) -- valid
  Oriolus traillii nigellicauda (Swinhoe, 1870) -- valid
  Oriturus superciliosus (Swainson, 1838) -- valid -- Striped Sparrow, Zacatonero rayado
  Oriturus superciliosus superciliosus (Swainson, 1838) -- valid
  Ornithomyia buteonis Swenk, 1916 -- invalid
  Orphnotrechus Sweet, 1991 -- valid
  Orphnotrechus slateri Sweet, 1991 -- valid
  Ortholeptura obscura (Swaine and Hopping, 1928) -- valid
  Orthriophis Utiger, Helfenberger, Schätti, Schmidt, Ruf and Ziswiler, 2002 -- valid
  Osmia aliciae Ayala & Griswold, 2005 -- valid
  Othinosmia stupenda Griswold, 1994 -- valid
  Otohydra Swedmark and Teissier, 1958 -- valid
  Otohydra vagans Swedmark and Teissier, 1958 -- valid
  Otohydridae Swedmark and Teissier, 1958 -- valid
  Otus bakkamoena erythrocampe (Swinhoe, 1874) -- invalid
  Otus bakkamoena glabripes (Swinhoe, 1870) -- invalid
  Otus bakkamoena umbratilis (Swinhoe, 1870) -- invalid
  Otus lettia erythrocampe (Swinhoe, 1874) -- valid
  Otus lettia glabripes (Swinhoe, 1870) -- valid
  Otus lettia umbratilis (Swinhoe, 1870) -- valid
  Otus senegalensis (Swainson, 1837) -- valid -- African Scops Owl
  Otus senegalensis senegalensis (Swainson, 1837) -- valid
  Otus spilocephalus hambroecki (Swinhoe, 1870) -- valid
  Oxaea brevipalpis Ascher, Engel and Griswold, 2006 -- invalid
  Oxylophus Swainson, 1837 -- invalid
  Oxylophus levaillantii (Swainson, 1829) -- invalid
  Oxyopes elongatus Biswas et al., 1996 -- valid
  Oxyopes kumarae Biswas & Roy, 2005 -- valid
  Oxyopes minutus Biswas et al., 1996 -- valid
  Oxyopes ovatus Biswas et al., 1996 -- valid
  Oxyopes reticulatus Biswas et al., 1996 -- valid
  Oxyopes saradae Biswas & Roy, 2005 -- valid
  Oxyopes subimali Biswas et al., 1996 -- valid
  Oxyopes tikaderi Biswas & Majumder, 1995 -- valid
  Oxyruncus cristatus Swainson, 1821 -- valid -- Sharpbill
  Oxyruncus cristatus cristatus Swainson, 1821 -- valid
  Ozophorini Sweet, 1964 -- valid
  Pachycephalidae Swainson, 1831 -- valid
  Pachygnatha silentvalliensis Biswas & Roy, 2004 -- valid
  Pachyramphus polychopterus spixii (Swainson, 1838) -- valid
  Paguma larvata taivana Swinhoe, 1862 -- valid
  Pagurapseudes largoensis Mc Sweeny, 1982 -- valid
  Pagurotanais largoensis (McSweeny, 1982) -- valid
  Palmoconcha Swain and Gilby, 1974 -- valid
  Panorpa americana Swederus, 1787 -- valid
  Panorpa lugubris (Swederus, 1787) -- valid
  Panurginus expallidus Swenk and Cockerell, 1907 -- invalid
  Panurginus horizontalis Swenk and Cockerell, 1907 -- invalid
  Panurginus simulans Swenk and Cockerell, 1907 -- invalid
  Panurginus stigmalis Swenk and Cockerell, 1907 -- invalid
  Papyridea Swainson, 1840 -- valid
  Paracyprideis pseudopunctillata Swain, 1963 -- valid
  Paracyproidea lineata Haswell, 1879 -- valid
  Paradicranophorus aculeatus (Neiswestnova-Shadina, 1935) -- valid
  Paragobiopsis orbicularis Visweswara Rao, 1971 -- valid
  Paramesochra ornata Krishnaswamy, 1957 -- valid
  Paramigas goodmani Griswold & Ledford, 2001 -- valid
  Paramigas macrops Griswold & Ledford, 2001 -- valid
  Paramigas manakambus Griswold & Ledford, 2001 -- valid
  Paramigas milloti Griswold & Ledford, 2001 -- valid
  Paramigas oracle Griswold & Ledford, 2001 -- valid
  Paramigas pectinatus Griswold & Ledford, 2001 -- valid
  Paramigas rothorum Griswold & Ledford, 2001 -- valid
  Paramisophria spooneri Krishnaswamy, 1959 -- valid
  Paranerilla Jouin and Swedmark, 1965 -- valid
  Paranerilla limicola Jouin and Swedmark, 1965 -- valid
  Paranthura australis Haswell, 1881 -- valid
  Parapseudoleptomesochra trisetosa (Krishnaswamy, 1957) -- valid
  Parapseudoleptomesochra trisetosa trisetosa (Krishnaswamy, 1957) -- valid
  Paratanais linearis Haswell, 1884 -- valid
  Paratanais tenuicornis Haswell, 1882 -- invalid
  Paraturbanella armoricana (Swedmark, 1955) -- valid
  Paraturbanella teissieri Swedmark, 1954 -- valid
  Pardirallus sanguinolentus (Swainson, 1838) -- valid -- Plumbeous Rail
  Pardirallus sanguinolentus sanguinolentus (Swainson, 1838) -- valid
  Pardosa duplicata Saha, Biswas & Raychaudhuri, 1994 -- valid
  Pardosa royi Biswas & Raychaudhuri, 2003 -- valid
  Parus gambeli atratus (Grinnell & Swarth, 1926) -- invalid
  Parus inornatus affabilis (Grinnell & Swarth, 1926) -- invalid
  Parus inornatus sequestratus (Grinnell & Swarth, 1926) -- invalid
  Parus minor commixtus Swinhoe, 1868 -- valid
  Parus monticolus insperatus Swinhoe, 1866 -- valid
  Passerella Swainson, 1837 -- valid -- Fox Sparrows
  Passerella iliaca canescens Swarth, 1918 -- invalid
  Passerella iliaca fulva Swarth, 1918 -- invalid
  Passerella schistacea canescens Swarth, 1918 -- valid
  Patu jidanweishi Miller, Griswold & Yin, 2009 -- valid
  Patu qiqi Miller, Griswold & Yin, 2009 -- valid
  Patu xiaoxiao Miller, Griswold & Yin, 2009 -- valid
  Patularia Swainson, 1840 -- invalid
  Pectocythere parkerae Swain and Gilby, 1974 -- valid
  Pedalion gigas Guilding in Swainson, 1838 -- invalid
  Pedicularia Swainson, 1840 -- valid
  Pelargopsis melanorhyncha dichrorhyncha A. B. Meyer & Wiglesworth, 1896 -- valid
  Pella gesneri Klimaszewski in Klimaszewski, Sweeney, Price and Pelletier, 2005 -- valid
  Pellorneum Swainson, 1832 -- valid
  Pellorneum ruficeps Swainson, 1832 -- valid -- Puff-throated Babbler
  Pellorneum ruficeps ruficeps Swainson, 1832 -- valid
  Pellorneum ruficeps subochraceum Swinhoe, 1871 -- valid
  Pellucistoma bensoni McKenzie and Swain, 1967 -- valid
  Pembatatu Griswold, 2001 -- valid
  Pembatatu embamba Griswold, 2001 -- valid
  Pembatatu gongo Griswold, 2001 -- valid
  Pembatatu mafuta Griswold, 2001 -- valid
  Penaeopsis macleayi (Haswell, 1879) -- invalid
  Penaeopsis mastersii (Haswell, 1878) -- invalid
  Penaeopsis novaeguineae (Haswell, 1879) -- invalid
  Penaeopsis palmensis (Haswell, 1879) -- invalid
  Penaeus esculentus Haswell, 1879 -- valid -- brown tiger prawn, camarón tigre marrón, crevette tigrée brune
  Penaeus granulosus Haswell, 1879 -- invalid
  Penaeus macleayi Haswell, 1879 -- invalid
  Penaeus mastersii Haswell, 1878 -- invalid
  Penaeus novaeguineae Haswell, 1879 -- invalid
  Penaeus palmensis Haswell, 1879 -- invalid
  Pentholaea albifrons frontalis (Swainson, 1837) -- valid
  Percina sciera (Swain, 1883) -- valid -- dusky darter
  Percina squamata (Gilbert and Swain in Gilbert, 1887) -- valid -- olive darter
  Perdita angellata Griswold, 1993 -- valid
  Perdita boharti Portman and Griswold, 2016 -- valid
  Perdita celadona Griswold and Miller, 2010 -- valid
  Perdita dolichocephala Swenk and Cockerell, 1907 -- valid
  Perdita exusta Portman and Griswold, 2016 -- valid
  Perdita hippolyta Portman and Griswold, 2016 -- valid
  Perdita kiowi Griswold, 1988 -- valid
  Perdita lacteipennis Swenk and Cockerell, 1907 -- invalid
  Perdita laticincta Swenk and Cockerell, 1907 -- valid
  Perdita meconis Griswold, 1993 -- valid
  Perdita melanostoma Swenk and Cockerell, 1907 -- valid
  Perdita melanostoma melanostoma Swenk and Cockerell, 1907 -- valid
  Perdita nebrascensis Swenk and Cockerell, 1907 -- valid
  Perdita prodigiosa Portman and Griswold, 2016 -- valid
  Perdita rhondae Griswold, 2010 -- valid
  Perdita stottleri flavida Swenk and Cockerell, 1907 -- invalid
  Perdita titania Portman and Griswold, 2016 -- valid
  Perdita ute Griswold, 1993 -- valid
  Perdita vespertina Griswold and Miller, 2010 -- valid
  Pericrocotus cantonensis Swinhoe & P. L. Sclater, 1861 -- valid -- Swinhoe's Minivet
  Pericrocotus speciosus fraterculus Swinhoe, 1870 -- valid
  Periparus venustulus (Swinhoe, 1870) -- valid -- Yellow-bellied Tit
  Perissocytheridea bicelliforma Swain, 1955 -- valid
  Perissocytheridea brachyforma Swain, 1955 -- valid
  Perissocytheridea excavata Swain, 1955 -- valid
  Perissocytheridea rugata Swain, 1955 -- valid
  Perissocytheridea troglodyta (Swain, 1955) -- valid
  Pero macdunnoughi Cassino and Swett, 1922 -- valid
  Petaurista philippensis grandis (Swinhoe, 1863) -- valid
  Petrochelidon pyrrhonota melanogaster (Swainson, 1827) -- valid
  Petrochroa communis Swezey, 1946 -- invalid
  Petrochroa elegantula (Swezey, 1934) -- invalid
  Petrochroa neckerensis (Swezey, 1926) -- invalid
  Petroica Swainson, 1829 -- valid
  Petronason Swainson, 1839 -- invalid
  Petronason longicauda Swainson, 1839 -- invalid
  Peucetia harishankarensis Biswas, 1975 -- valid
  Peucetia ranganathani Biswas & Roy, 2005 -- valid
  Phaenicophilus poliocephalus coryi Richmond & Swales, 1924 -- valid
  Phaenocora anomalocoela (Haswell, 1905) -- valid
  Phaeoura utahensis Cassino and Swett, 1923 -- valid
  Phaethornis Swainson, 1827 -- valid
  Phainopepla nitens (Swainson, 1838) -- valid -- Capulinero negro, Phainopepla
  Phainopepla nitens nitens (Swainson, 1838) -- valid
  Phanotea cavata Griswold, 1994 -- valid
  Phanotea ceratogyna Griswold, 1994 -- valid
  Phanotea digitata Griswold, 1994 -- valid
  Phanotea knysna Griswold, 1994 -- valid
  Phanotea lata Griswold, 1994 -- valid
  Phanotea margarita Griswold, 1994 -- valid
  Phanotea orestria Griswold, 1994 -- valid
  Phanotea sathegyna Griswold, 1994 -- valid
  Phanotea xhosa Griswold, 1994 -- valid
  Phasiane tulareata Cassino and Swett, 1923 -- invalid
  Phasianellidae Swainson, 1840 -- valid
  Phasianus colchicus decollatus Swinhoe, 1870 -- valid
  Pheucticus melanocephalus (Swainson, 1827) -- valid -- Black-headed Grosbeak, Picogordo tigrillo
  Pheucticus melanocephalus melanocephalus (Swainson, 1827) -- valid
  Pheugopedius genibarbis (Swainson, 1838) -- valid -- Moustached Wren
  Pheugopedius genibarbis genibarbis (Swainson, 1838) -- valid
  Phidippus calcuttaensis Biswas, 1984 -- valid
  Phidippus majumderi Biswas, 1999 -- valid
  Phidippus tirapensis Biswas & Biswas, 2006 -- valid
  Philautus cardamonus Ohler, Swan and Daltry, 2002 -- valid
  Philemon buceroides (Swainson, 1838) -- valid -- Helmeted Friarbird
  Philemon buceroides buceroides (Swainson, 1838) -- valid
  Phloeosinus antennatus Swaine, 1924 -- valid
  Phloeosinus canadensis Swaine, 1917 -- valid
  Phloeosinus fulgens Swaine, 1924 -- valid
  Phloeosinus hoppingi Swaine, 1915 -- valid
  Phloeosinus pini Swaine, 1915 -- valid
  Phloeosinus scopulorum Swaine, 1924 -- valid
  Phloeosinus scopulorum scopulorum Swaine, 1924 -- valid
  Phloeosinus vandykei Swaine, 1915 -- valid
  Phloeotribus piceae Swaine, 1911 -- valid
  Phoenicircus Swainson, 1832 -- valid
  Phoenicircus nigricollis Swainson, 1832 -- valid -- Black-necked Red Cotinga
  Phoreiobothrium anticaporum Caira, Richmond & Swanson, 2005 -- valid
  Phoreiobothrium blissorum Caira, Richmond & Swanson, 2005 -- valid
  Phoreiobothrium lewinense Caira, Richmond & Swanson, 2005 -- valid
  Phoreiobothrium manirei Caira, Healy & Swanson, 1996 -- valid
  Phoreiobothrium perilocrocodilus Caira, Richmond & Swanson, 2005 -- valid
  Phoreiobothrium robertsoni Caira, Richmond & Swanson, 2005 -- valid
  Phoronis australis Haswell, 1883 -- valid
  Phyllanthus atripennis (Swainson, 1837) -- valid -- Capuchin Babbler
  Phyllanthus atripennis atripennis (Swainson, 1837) -- valid
  Phyllastrephus Swainson, 1832 -- valid
  Phyllastrephus scandens Swainson, 1837 -- valid -- Red-tailed Leaflove
  Phyllastrephus scandens scandens Swainson, 1837 -- valid
  Phyllastrephus terrestris Swainson, 1837 -- valid -- Terrestrial Brownbul
  Phyllastrephus terrestris terrestris Swainson, 1837 -- valid
  Phyllergates cuculatus riedeli A. B. Meyer & Wiglesworth, 1895 -- valid
  Phyllobothrium vagans Haswell, 1902 -- valid
  Phyllonotus Swainson, 1833 -- invalid
  Phyllopteryx Swainson, 1839 -- valid
  Phylloscopus plumbeitarsus Swinhoe, 1861 -- valid
  Phylloscopus sarasinorum (A. B. Meyer & Wiglesworth, 1896) -- valid -- Sulawesi Leaf Warbler
  Phylloscopus sarasinorum sarasinorum (A. B. Meyer & Wiglesworth, 1896) -- valid
  Phylloscopus tenellipes Swinhoe, 1860 -- valid -- Pale-legged Leaf Warbler
  Phylloscopus xanthodryas (Swinhoe, 1863) -- valid
  Physomerus centralis Mukherjee, Hassan and Biswas, 2016 -- valid
  Phyxelida abyssinica Griswold, 1990 -- valid
  Phyxelida anatolica Griswold, 1990 -- valid
  Phyxelida apwania Griswold, 1990 -- valid
  Phyxelida carcharata Griswold, 1990 -- valid
  Phyxelida crassibursa Griswold, 1990 -- valid
  Phyxelida eurygyna Griswold, 1990 -- valid
  Phyxelida fanivelona Griswold, 1990 -- valid
  Phyxelida irwini Griswold, 1990 -- valid
  Phyxelida jabalina Griswold, 1990 -- valid
  Phyxelida kipia Griswold, 1990 -- valid
  Phyxelida malagasyana Griswold, 1990 -- valid
  Phyxelida pingoana Griswold, 1990 -- valid
  Phyxelida sindanoa Griswold, 1990 -- valid
  Phyxelida umlima Griswold, 1990 -- valid
  Piaya cayana mexicana (Swainson, 1827) -- valid
  Picoides arcticus (Swainson, 1832) -- valid -- Black-backed Woodpecker, pic ŕ dos noir
  Picoides pubescens medianus (Swainson, 1832) -- valid
  Picoides villosus audubonii (Swainson, 1832) -- valid
  Picoides villosus sitkensis (Swarth, 1911) -- valid
  Piculus rubiginosus (Swainson, 1820) -- valid -- Carpintero oliváceo, Golden-olive Woodpecker
  Piculus rubiginosus rubiginosus (Swainson, 1820) -- valid
  Pieridae Swainson, 1820 -- valid -- orange-tips, Sulphurs, Whites
  Pierina Swainson, 1820 -- valid
  Pierinae Swainson, 1820 -- valid -- Whites
  Pierini Swainson, 1820 -- valid
  Pimaphera Cassino and Swett, 1927 -- valid
  Pimaphera percata Cassino and Swett, 1927 -- valid
  Pimoa lihengae Griswold, Long & Hormiga, 1999 -- valid
  Pipilo crissalis bullatus Grinnell & Swarth, 1926 -- invalid
  Pipilo crissalis petulans Grinnell & Swarth, 1926 -- invalid
  Pipilo erythrophthalmus arcticus (Swainson, 1832) -- invalid
  Pipilo erythrophthalmus falcinellus Swarth, 1913 -- invalid
  Pipilo erythrophthalmus montanus Swarth, 1905 -- invalid
  Pipilo erythrophthalmus umbraticola Grinnell & Swarth, 1926 -- invalid
  Pipilo fuscus Swainson, 1827 -- invalid -- Brown Towhee, Canyon Towhee, Toquí pardo
  Pipilo fuscus bullatus Grinnell & Swarth, 1926 -- invalid
  Pipilo fuscus fuscus Swainson, 1827 -- invalid
  Pipilo fuscus petulans Grinnell & Swarth, 1926 -- invalid
  Pipilo maculatus Swainson, 1827 -- valid -- Spotted Towhee
  Pipilo maculatus arcticus (Swainson, 1832) -- valid
  Pipilo maculatus falcinellus Swarth, 1913 -- valid
  Pipilo maculatus macronyx Swainson, 1827 -- valid
  Pipilo maculatus maculatus Swainson, 1827 -- valid
  Pipilo maculatus montanus Swarth, 1905 -- valid
  Pipilo maculatus umbraticola Grinnell & Swarth, 1926 -- valid
  Pipraeidea Swainson, 1827 -- valid
  Pipreola Swainson, 1838 -- valid
  Pipreola chlorolepidota Swainson, 1838 -- valid -- Fiery-throated Fruiteater
  Piranga bidentata Swainson, 1827 -- valid -- Flame-colored Tanager, Tángara dorso rayado
  Piranga bidentata bidentata Swainson, 1827 -- valid
  Piranga erythrocephala (Swainson, 1827) -- valid -- Red-headed Tanager, Tángara cabeza roja
  Piranga erythrocephala erythrocephala (Swainson, 1827) -- valid
  Piranga flava hepatica Swainson, 1827 -- invalid
  Piranga hepatica Swainson, 1827 -- valid -- Hepatic Tanager
  Piranga hepatica hepatica Swainson, 1827 -- valid
  Pitangus Swainson, 1827 -- valid -- Kiskadees
  Pitta erythrogaster inspeculata A. B. Meyer & Wiglesworth, 1894 -- valid
  Pitta versicolor Swainson, 1825 -- valid -- Noisy Pitta
  Pitta versicolor versicolor Swainson, 1825 -- valid
  Pityogenes hopkinsi Swaine, 1915 -- valid
  Pityogenes knechteli Swaine, 1918 -- valid
  Pityokteines elegans Swaine, 1916 -- valid
  Pityokteines lasiocarpi (Swaine, 1916) -- valid
  Pityokteines minutus (Swaine, 1916) -- valid
  Pityokteines ornatus (Swaine, 1916) -- valid
  Pityophthorus boycei Swaine, 1925 -- valid
  Pityophthorus carinulatus Swaine, 1925 -- valid
  Pityophthorus carmeli Swaine, 1918 -- valid
  Pityophthorus confertus Swaine, 1917 -- valid
  Pityophthorus intextus Swaine, 1917 -- valid
  Pityophthorus nitidus Swaine, 1917 -- valid
  Pityophthorus pseudotsugae Swaine, 1918 -- valid
  Pityophthorus ramiperda Swaine, 1917 -- valid
  Pityophthorus serratus Swaine, 1918 -- valid
  Plagithmysus davisi Swezey, 1946 -- valid
  Plagithmysus dodonaeae (Swezey, 1946) -- valid
  Plagithmysus looki (Swezey, 1947) -- valid
  Plagithmysus looki looki Swezey, 1947 -- valid
  Plagithmysus mezoneuri (Swezey, 1946) -- valid
  Plataea ursaria Cassino and Swett, 1922 -- valid
  Platydasys maximus celticus Swedmark, 1955 -- valid
  Platydasys ruber Swedmark, 1956 -- valid
  Platydasys tentaculatus Swedmark, 1956 -- valid
  Platygaster indica (Swainson, 1839) -- invalid
  Platylophus Swainson, 1832 -- valid
  Platypus wilsoni Swaine, 1916 -- valid
  Platythomisus sudeepi Biswas, 1977 -- valid
  Plega fumosa Linsley and MacSwain, 1955 -- valid
  Plega melitomae Linsley and MacSwain, 1955 -- valid
  Pleiodon ovatus (Swainson, 1823) -- valid
  Plenoculus fremonti Parker in Parker and Griswold, 1984 -- valid
  Plenoculus ute Griswold in Parker and Griswold, 1984 -- valid
  Pleurotomariidae Swainson, 1840 -- valid
  Pleurotomarioidea Swainson, 1840 -- valid
  Plexippus wesolowskae Biswas & Raychaydhuri, 1998 -- valid
  Plexippus zabkai Biswas, 1999 -- valid
  Plinthisini Slater and Sweet, 1961 -- invalid
  Ploceus nigricollis brachypterus Swainson, 1837 -- valid
  Poecile gambeli atrata (Grinnell & Swarth, 1926) -- invalid
  Poecile gambeli atratus (Grinnell & Swarth, 1926) -- valid
  Poecile montanus baicalensis Swinhoe, 1871 -- valid
  Poecilomigas elegans Griswold, 1987 -- valid
  Poicephalus Swainson, 1837 -- valid
  Pokennips Griswold, 2001 -- valid
  Polioptila plumbea atricapilla (Swainson, 1831) -- valid
  Polycheria Haswell, 1879 -- valid
  Polydora polybranchia Haswell, 1885 -- invalid
  Polygraphus hoppingi Swaine, 1925 -- valid
  Polyommatinae Swainson, 1827 -- valid -- Blues
  Polyommatini Swainson, 1827 -- valid
  Pomatorhinus musicus Swinhoe, 1859 -- valid
  Pomatorhinus ruficollis nigrostellatus Swinhoe, 1870 -- valid
  Pomatorhinus ruficollis stridulus Swinhoe, 1861 -- valid
  Pongolania Griswold, 1990 -- valid
  Pongolania chrysionaria Griswold, 1990 -- valid
  Pongolania pongola Griswold, 1990 -- valid
  Porcellio obtrusifrons Haswell, 1882 -- valid
  Porzana exquisita Swinhoe, 1873 -- invalid
  Potamida sicula Swainson, 1840 -- invalid
  Potomida Swainson, 1840 -- valid
  Prinia crinigera striata Swinhoe, 1859 -- valid
  Prinia flaviventris sonitans Swinhoe, 1860 -- valid
  Prinia inornata extensicauda (Swinhoe, 1860) -- valid
  Prinia inornata flavirostris (Swinhoe, 1863) -- valid
  Prionispa houjayi Lee, Swietojanska and Staines, 2009 -- valid
  Prionopidae Swainson, 1824 -- valid
  Prionotus ophryas Jordan and Swain, 1885 -- valid -- bandtail searobin, rubio cola bandeada
  Prionotus stearnsi Jordan and Swain, 1885 -- valid -- rubio pequeńo, shortwing searobin
  Pristigaster elongata Swainson, 1838 -- invalid
  Pristigaster indicus Swainson, 1839 -- invalid
  Probaryconus cauverycus Saraswat, 1978 -- valid
  Prorella albida (Cassino and Swett, 1923) -- valid
  Prorhynchus putealis Haswell, 1898 -- valid
  Prostheceraeus anomalus Haswell, 1907 -- valid
  Prosthiostomum maculatum Haswell, 1907 -- valid
  Proteriades emarginatus Griswold, 1983 -- invalid
  Proteriades orthognathus Griswold, 1983 -- invalid
  Proteriades paiute Griswold, 1983 -- invalid
  Protobonellia annularis Biseswar, 1993 -- valid
  Protodufourea eickworti Bohart & Griswold, 1997 -- valid
  Protodufourea koso Bohart & Griswold, 1997 -- valid
  Protodufourea zavortinki Bohart & Griswold, 1997 -- valid
  Protosmia asensioi Griswold & Parker, 1987 -- valid
  Protosuberites Swartschewsky, 1905 -- valid
  Prunella collaris erythropygia (Swinhoe, 1870) -- valid
  Psaltriparus minimus melanurus Grinnell & Swarth, 1926 -- valid
  Psammodrilidae Swedmark, 1952 -- valid
  Psammodriloides Swedmark, 1958 -- valid
  Psammodrilus Swedmark, 1952 -- valid
  Psammodrilus balanoglossoides Swedmark, 1958 -- valid
  Psammodrilus fauveli Swedmark, 1958 -- valid
  Psarisomus Swainson, 1837 -- valid
  Psetta Swainson, 1839 -- invalid
  Psetta (Platophrys) Swainson, 1839 -- invalid
  Pseudoanthidium brachiatum Michener & Griswold, 1994 -- valid
  Pseudoceros cardinalis Haswell, 1907 -- valid
  Pseudoceros limbatus Haswell, 1907 -- invalid
  Pseudohylesianus Swaine, 1917 -- invalid
  Pseudohylesinus Swaine, 1917 -- valid
  Pseudohylesinus nobilis Swaine, 1917 -- valid
  Pseudohylesinus sitchensis Swaine, 1917 -- valid
  Pseudohylesinus tsugae Swaine, 1917 -- valid
  Pseudolivia Swainson, 1840 -- valid
  Pseudopachyta Swaine and Hopping, 1928 -- invalid
  Pseudopanurgus expallidus (Swenk and Cockerell, 1907) -- valid
  Pseudopanurgus horizontalis (Swenk and Cockerell, 1907) -- valid
  Pseudopanurgus simulans (Swenk and Cockerell, 1907) -- valid
  Pseudopanurgus stigmalis (Swenk and Cockerell, 1907) -- valid
  Pseudopityophthorus Swaine, 1918 -- valid
  Pseudostomella Swedmark, 1956 -- valid
  Pseudostomella roscovita Swedmark, 1956 -- valid
  Pseudostrangalia Swaine and Hopping, 1928 -- valid
  Pseudozonitis maculicollis (MacSwain, 1951) -- valid
  Psilocephalus Swainson, 1839 -- invalid
  Psilonotus Swainson, 1839 -- invalid
  Psittacula roseata Biswas, 1951 -- valid -- Blossom-headed Parakeet
  Psittacula roseata juneae Biswas, 1951 -- valid
  Psittacula roseata roseata Biswas, 1951 -- valid
  Pteracles Swainson, 1838 -- invalid
  Pteroglossus inscriptus Swainson, 1822 -- valid -- Lettered Aracari
  Pteroglossus inscriptus inscriptus Swainson, 1822 -- valid
  Pteropterus Swainson, 1839 -- invalid
  Pterosarus expallidus (Swenk and Cockerell, 1907) -- invalid
  Pterosarus horizontalis (Swenk and Cockerell, 1907) -- invalid
  Pterosarus simulans (Swenk and Cockerell, 1907) -- invalid
  Pterosarus stigmalis (Swenk and Cockerell, 1907) -- invalid
  Pterotaea melanocarpa (Swett, 1916) -- valid
  Pterotaea newcombi (Swett, 1914) -- valid
  Pteruthius Swainson, 1832 -- valid
  Pteruthius ripleyi Biswas, 1960 -- valid
  Pterynotus Swainson, 1833 -- valid
  Ptilinopus Swainson, 1825 -- valid -- Fruit-Doves
  Ptilinopus fischeri meridionalis (A. B. Meyer & Wiglesworth, 1893) -- valid
  Ptilinopus regina Swainson, 1825 -- valid -- Rose-crowned Fruit Dove
  Ptilinopus regina regina Swainson, 1825 -- valid
  Ptilinopus subgularis A. B. Meyer & Wiglesworth, 1896 -- valid -- Maroon-chinned Fruit Dove
  Ptilinopus subgularis subgularis A. B. Meyer & Wiglesworth, 1896 -- valid
  Ptiliogonys Swainson, 1827 -- invalid
  Ptiliogonys cinereus Swainson, 1827 -- invalid
  Ptilogonys Swainson, 1827 -- valid
  Ptilogonys cinereus Swainson, 1827 -- valid
  Ptilogonys cinereus cinereus Swainson, 1827 -- valid
  Ptilopachus Swainson, 1837 -- valid
  Ptiloris Swainson, 1825 -- valid
  Ptiloris paradiseus Swainson, 1825 -- valid -- Paradise Riflebird
  Ptilostomus Swainson, 1837 -- valid
  Pucrasia macrolopha darwini Swinhoe, 1872 -- valid
  Puntius manipurensis Menon, Rema Devi and Viswanath, 2000 -- valid
  Pycnonotus sinensis hainanus (Swinhoe, 1870) -- valid
  Pycnonotus xanthorrhous andersoni (Swinhoe, 1870) -- valid
  Pyranga hepatica Swainson, 1827 -- invalid
  Pyrenestes Swainson, 1837 -- valid
  Pyrenestes sanguineus Swainson, 1837 -- valid -- Crimson Seedcracker
  Pyrenestes sanguineus sanguineus Swainson, 1837 -- valid
  Pyriglena atra (Swainson, 1825) -- valid -- Fringe-backed Fire-eye
  Pyrotini MacSwain, 1956 -- valid
  Pyrrhocorax pyrrhocorax brachypus (Swinhoe, 1871) -- valid
  Pytilia Swainson, 1837 -- valid
  Pytilia phoenicoptera Swainson, 1837 -- valid -- Red-winged Pytilia
  Pytilia phoenicoptera phoenicoptera Swainson, 1837 -- valid
  Quiscalus lugubris Swainson, 1838 -- valid -- Carib Grackle
  Quiscalus lugubris inflexirostris Swainson, 1838 -- valid
  Quiscalus lugubris lugubris Swainson, 1838 -- valid
  Quiscalus mexicanus peruvianus Swainson, 1838 -- valid
  Quiscalus niger crassirostris Swainson, 1838 -- valid
  Quiscalus palustris (Swainson, 1827) -- valid -- Slender-billed Grackle, Zanate de Lerma
  Rabdophorus Swainson, 1839 -- invalid
  Raecius congoensis Griswold, 2002 -- valid
  Raecius jocquei Griswold, 2002 -- valid
  Raecius scharffi Griswold, 2002 -- valid
  Rajella caudaspinosa (Von Bonde and Swart, 1923) -- valid
  Rajella leopardus (Von Bonde and Swart, 1923) -- valid
  Rallus sanguinolentus Swainson, 1838 -- invalid
  Ramphastos ambiguus Swainson, 1823 -- valid -- Black-mandibled Toucan
  Ramphastos ambiguus ambiguus Swainson, 1823 -- valid
  Ramphocelus melanogaster (Swainson, 1838) -- valid -- Huallaga Tanager
  Ramphocelus melanogaster melanogaster (Swainson, 1838) -- valid
  Ramphotrigon megacephala (Swainson, 1835) -- invalid
  Ramphotrigon megacephalum (Swainson, 1835) -- valid -- Bamboo Flatbill
  Ramphotrigon megacephalum megacephalum (Swainson, 1835) -- valid
  Rana faber Ohler, Swan and Daltry, 2002 -- invalid
  Rana swani Myers and Leviton in Leviton, Myers and Swan, 1956 -- invalid
  Rattus losea (Swinhoe, 1871) -- valid -- Losea Rat
  Rattus rattus khumbuensis Biswas and Khajuria, 1955 -- invalid
  Reduvius lasius Swanson, 2017 -- valid
  Remiz consobrinus (Swinhoe, 1870) -- valid -- Chinese Penduline Tit
  Rhacophorus duboisi Ohler, Marquis, Swan and Grosjean, 2000 -- valid
  Rhene pantharae Biswas & Biswas, 1992 -- valid
  Rhina cyclostomus Swainson, 1839 -- invalid
  Rhinecanthus Swainson, 1839 -- valid
  Rhinesomus Swainson, 1839 -- invalid
  Rhipiphorus blaisdelli Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus blaisdelli Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus diadasiae Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus diadasiae Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus epinomiae Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus epinomiae Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus eremicola Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus eremicola Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus sexdens Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus sexdens Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus smithi Linsley and MacSwain, 1950 -- invalid
  Rhipiphorus smithi Linsley and MacSwain, 1950 -- invalid
  Rhizomys chinensis Swinhoe, 1870 -- invalid
  Rhizophagus pahalgamus Sen Gupta and Biswas, 1977 -- valid
  Rhodopechys mongolica (Swinhoe, 1870) -- invalid
  Rhopophilus pekinensis (Swinhoe, 1868) -- valid -- Chinese Hill Warbler
  Rhopophilus pekinensis pekinensis (Swinhoe, 1868) -- valid
  Rhynchopsitta pachyrhyncha (Swainson, 1827) -- valid -- Cotorra-serrana occidental, Thick-billed Parrot
  Rhytidocassis lopatini Borowiec and Swietojanska, 2001 -- valid
  Ripiphorus blaisdelli Linsley and MacSwain, 1950 -- valid
  Ripiphorus blaisdelli Linsley and MacSwain, 1950 -- invalid
  Ripiphorus diadasiae Linsley and MacSwain, 1950 -- valid
  Ripiphorus diadasiae Linsley and MacSwain, 1950 -- invalid
  Ripiphorus epinomiae Linsley and MacSwain, 1950 -- valid
  Ripiphorus epinomiae Linsley and MacSwain, 1950 -- invalid
  Ripiphorus eremicola Linsley and MacSwain, 1950 -- valid
  Ripiphorus eremicola Linsley and MacSwain, 1950 -- invalid
  Ripiphorus sexdens Linsley and MacSwain, 1950 -- valid
  Ripiphorus sexdens Linsley and MacSwain, 1950 -- invalid
  Ripiphorus smithi Linsley and MacSwain, 1950 -- valid
  Ripiphorus smithi Linsley and MacSwain, 1950 -- invalid
  Robertsonites Swain, 1963 -- valid
  Roundstonia cumuloidea (Swain, 1963) -- valid
  Rupiscartes Swainson, 1839 -- invalid
  Rynchops albicollis Swainson, 1838 -- valid -- Indian Skimmer
  Sabulodes duoangulata (Cassino and Swett, 1923) -- valid
  Sabulodes rubritincta nigripuncta Cassino and Swett, 1925 -- invalid
  Sagartia ornata (Holdsworth, 1855) -- valid
  Salmophasia Swainson, 1839 -- invalid
  Salmostoma Swainson, 1839 -- valid
  Salpinctes obsoletus proximus Swarth, 1914 -- valid
  Sanmenia nigra Tang, Griswold & Peng, 2009 -- valid
  Sanmenia tengchong Tang, Griswold & Yin, 2009 -- valid
  Saulaspis trivittata Swietojanska, 2002 -- valid
  Saurothera longirostris petersi Richmond & Swales, 1924 -- valid
  Sayornis nigricans (Swainson, 1827) -- valid -- Black Phoebe, Papamoscas negro
  Sayornis nigricans nigricans (Swainson, 1827) -- valid
  Sayornis saya pallidus (Swainson, 1827) -- valid
  Scapanus latimanus occultus Grinnell and Swarth, 1912 -- valid
  Scaphella Swainson, 1832 -- valid
  Scaphidura Swainson, 1837 -- invalid
  Scartelaos Swainson, 1839 -- valid
  Scartes Swainson, 1835 -- invalid
  Scarus virginalis Jordan and Swain, 1884 -- invalid
  Scharffia Griswold, 1997 -- valid
  Scharffia chinja Griswold, 1997 -- valid
  Scharffia holmi Griswold, 1997 -- valid
  Scharffia nyasa Griswold, 1997 -- valid
  Scharffia rossi Griswold, 1997 -- valid
  Sciagraphia oweni Swett, 1907 -- invalid
  Scierus pubescens Swaine, 1924 -- valid
  Sclerurus Swainson, 1827 -- valid
  Scolytus monticolae (Swaine, 1917) -- valid
  Scolytus piceae (Swaine, 1910) -- valid
  Scolytus tsugae (Swaine, 1917) -- valid
  Scops senegalensis Swainson, 1837 -- invalid
  Scotorythra apicalis Swezey, 1948 -- valid
  Scotorythra kuschei Swezey, 1940 -- valid
  Seicercus Swainson, 1837 -- valid
  Seiurus Swainson, 1827 -- valid -- Ovenbirds
  Selasphorus Swainson, 1832 -- valid -- Rufous Hummingbirds
  Selasphorus platycercus (Swainson, 1827) -- valid -- Broad-tailed Hummingbird, Zumbador cola ancha
  Selasphorus platycercus platycercus (Swainson, 1827) -- invalid
  Semicytherura johnsonoides (Swain, 1967) -- valid
  Semiothisa fieldi (Swett, 1916) -- invalid
  Semiothisa oweni (Swett, 1907) -- invalid
  Semnoprepia coprosmae Swezey, 1920 -- invalid
  Semnoprepia ferruginea (Swezey, 1915) -- invalid
  Semnoprepia fuscopurpurea Swezey, 1915 -- invalid
  Semnoprepia pittospori Swezey, 1954 -- invalid
  Sericosema wilsonensis Cassino and Swett, 1922 -- valid
  Sericulus Swainson, 1825 -- valid
  Serilophus Swainson, 1837 -- valid
  Serinus canicollis (Swainson, 1838) -- valid -- Cape Canary
  Serinus canicollis canicollis (Swainson, 1838) -- valid
  Setipinna Swainson, 1839 -- valid
  Setophaga Swainson, 1827 -- valid -- Redstarts
  Setophaga picta Swainson, 1829 -- invalid
  Setophaga pictus Swainson, 1829 -- invalid
  Setophaga pictus pictus Swainson, 1829 -- invalid
  Sewellina Krishnaswamy, 1956 -- valid
  Sewellina reducta Krishnaswamy, 1956 -- valid
  Sialia Swainson, 1827 -- valid -- Bluebirds
  Sialia mexicana Swainson, 1832 -- valid -- Azulejo garganta azul, merle-bleu de l'ouest, Western Bluebird
  Sialia mexicana mexicana Swainson, 1832 -- valid
  Sigela brauneata (Swett, 1913) -- valid
  Silhouettea indica Visweswara Rao, 1971 -- valid
  Silonia Swainson, 1838 -- valid
  Simaoa Miller, Griswold & Yin, 2009 -- valid
  Simaoa bianjing Miller, Griswold & Yin, 2009 -- valid
  Simaoa kavanaugh Miller, Griswold & Yin, 2009 -- valid
  Simaoa maku Miller, Griswold & Yin, 2009 -- valid
  Simaoa yaojia Miller, Griswold & Yin, 2009 -- valid
  Sinosuthora webbiana bulomacha (Swinhoe, 1866) -- valid
  Sinosuthora webbiana suffusa (Swinhoe, 1871) -- valid
  Sitta europaea amurensis Swinhoe, 1871 -- valid
  Sitta frontalis Swainson, 1820 -- valid -- Velvet-fronted Nuthatch
  Sitta frontalis frontalis Swainson, 1820 -- valid
  Sittasomus Swainson, 1827 -- valid
  Skiotocharax Presswell, Weitzman and Bergquist, 2000 -- valid
  Skiotocharax meizon Presswell, Weitzman and Bergquist, 2000 -- valid
  Solea (Brachirus) Swainson, 1839 -- invalid
  Solegnathus Swainson, 1839 -- valid
  Somileptus Swainson, 1839 -- valid
  Somnolentus Swainson, 1838 -- invalid
  Sparisoma Swainson, 1839 -- valid
  Sparisoma cyanolene Jordan and Swain, 1884 -- invalid
  Sparisoma lorito Jordan and Swain, 1884 -- invalid
  Sparisoma xystrodon Jordan and Swain, 1884 -- invalid
  Spelaeomysis cochinensis Panampunnayil and Viswakumar, 1991 -- valid
  Speotyto cunicularia troglodytes Wetmore & Swales, 1931 -- invalid
  Speranza anataria (Swett, 1913) -- valid
  Speranza andersoni (Swett, 1916) -- valid
  Spermophaga Swainson, 1837 -- valid
  Sphaerotheca swani (Myers and Leviton in Leviton, Myers and Swan, 1956) -- invalid
  Sphecodina abbottii (Swainson, 1821) -- valid -- Abbott's Sphinx
  Sphedanolestes picturellus tordoi Swanson, 2017 -- valid
  Sphingius paltaensis Biswas & Biswas, 1992 -- valid
  Spilornis cheela burmanicus Swann, 1920 -- valid
  Spilornis cheela hoya Swinhoe, 1866 -- valid
  Spilornis cheela malayensis Swann, 1920 -- valid
  Spilornis cheela perplexus Swann, 1922 -- valid
  Spilornis cheela richmondi Swann, 1922 -- valid
  Spilornis cheela rutherfordi Swinhoe, 1870 -- valid
  Spinoliella helianthi Swenk and Cockerell, 1907 -- invalid
  Spinoliella hesperia Swenk and Cockerell, 1907 -- invalid
  Spinus cucullatus (Swainson, 1820) -- valid -- Red Siskin
  Spizella breweri taverneri Swarth & A. C. Brooks, 1925 -- valid -- Timberline Sparrow
  Spizella pallida (Swainson, 1832) -- valid -- bruant des plaines, Clay-colored Sparrow, Gorrión pálido
  Spizella taverneri Swarth & A. C. Brooks, 1925 -- invalid -- Timberline Sparrow
  Spizixos semitorques Swinhoe, 1861 -- valid -- Collared Finchbill
  Spizixos semitorques cinereicapillus Swinhoe, 1871 -- valid
  Spizixos semitorques semitorques Swinhoe, 1861 -- valid
  Stachyridopsis ruficeps praecognita (Swinhoe, 1866) -- valid
  Stamnoctenis pearsalli Swett, 1914 -- valid
  Stamnodes blackmorei Swett, 1915 -- valid
  Stamnodes cassinoi Swett, 1917 -- valid
  Stamnodes eldridgensis Swett, 1917 -- valid
  Stelis idahoensis Swenk, 1914 -- valid
  Stelis pardita (Parker & Griswold, 1993) -- valid
  Stelis rozeni Griswold & Parker, 2003 -- valid
  Stenetrium Haswell, 1881 -- valid
  Stenetrium armatum Haswell, 1881 -- valid
  Stenhelia indica Krishnaswamy -- valid
  Stenoheriades blommersi Pauly & Griswold, 2001 -- valid
  Stenoheriades eingeddicus Griswold, 1994 -- valid
  Stenoheriades prionotus Griswold, 1994 -- valid
  Stenolemus annulatus Mukherjee, Ambrose, Hassan and Biswas, 2015 -- valid
  Stenopsyche kodaikanalensis Swegman & Coffman, 1980 -- valid
  Stolas uniformis Borowiec and Swietojanska, 2010 -- valid
  Storena debasrae Biswas & Biswas, 1992 -- valid
  Storena dibangensis Biswas & Biswas, 2006 -- valid
  Strangalia bicolor (Swederus, 1787) -- valid
  Stratiodrilus Haswell, 1900 -- valid
  Strix leptogrammica caligata (Swinhoe, 1863) -- valid
  Strix pithecops Swinhoe, 1866 -- invalid
  Sturisoma Swainson, 1838 -- valid
  Subcancilla sulcata (Swainson in Sowerby, 1835) -- valid
  Sus scrofa taivanus (Swinhoe, 1863) -- valid
  Sylvirana faber (Ohler, Swan and Daltry, 2002) -- invalid
  Sympherobius constrictus Oswald, 1988 -- valid
  Sympherobius quadricuspis Oswald, 1988 -- valid
  Symphytognatha imbulunga Griswold, 1987 -- valid
  Synaptomyini Koenigswald and L. D. Martin, 1984 -- invalid
  Syngnathus auliscus (Swain, 1882) -- valid -- barred pipefish, pez pipa anillado
  Syngnathus floridae mackayi (Swain and Meek, 1884) -- invalid -- key dusky pipefish, Key dusky pipefish
  Syrmaticus ellioti (Swinhoe, 1872) -- valid -- Elliot's Pheasant
  Syrphus monoculus (Swederus, 1787) -- valid
  Tachycineta thalassina (Swainson, 1827) -- valid -- Golondrina verdemar, Violet-green Swallow
  Tachycineta thalassina thalassina (Swainson, 1827) -- valid
  Tachyphonus phoenicius Swainson, 1838 -- valid -- Red-shouldered Tanager
  Talpa insularis Swinhoe, 1863 -- invalid
  Tamiasciurus hudsonicus picatus (Swarth, 1921) -- valid
  Tanais tenuicornis (Haswell, 1882) -- valid
  Tangara chilensis paradisea (Swainson, 1837) -- valid
  Tangara cucullata (Swainson, 1834) -- valid -- Lesser Antillean Tanager
  Tangara cucullata cucullata (Swainson, 1834) -- valid
  Tangara cyanicollis caeruleocephala (Swainson, 1838) -- valid
  Tangara cyanoptera (Swainson, 1834) -- valid -- Black-headed Tanager
  Tangara cyanoptera cyanoptera (Swainson, 1834) -- valid
  Tanygnathus lucionensis talautensis A. B. Meyer & Wiglesworth, 1895 -- valid
  Tarentola albertschwartzi Sprackland and Swinney, 1998 -- valid
  Telmatodytes palustris aestuarinus Swarth, 1917 -- invalid
  Telophorus Swainson, 1832 -- valid
  Temnocephala aurantiaca Haswell, 1900 -- invalid
  Temnocephala brevicornis Haswell, 1892 -- valid
  Temnocephala brevicornis brevicornis Haswell, 1892 -- valid
  Temnocephala caeca Haswell, 1900 -- invalid
  Temnocephala comes Haswell, 1893 -- invalid
  Temnocephala dendyi Haswell, 1893 -- invalid
  Temnocephala engaei Haswell, 1893 -- invalid
  Temnocephala fasciata Haswell, 1888 -- invalid
  Temnocephala iheringi Haswell, 1893 -- valid
  Temnocephala jheringi Haswell, 1893 -- invalid
  Temnocephala minor Haswell, 1888 -- invalid
  Temnocephala novaezealandiae Haswell, 1887 -- invalid
  Temnocephala quadricornis Haswell, 1887 -- invalid
  Temnocephala simulator Haswell, 1924 -- invalid
  Temnocephala sugarei Haswell, 1893 -- valid
  Temnocephala tasmanica Haswell, 1900 -- invalid
  Temnohaswellia comes (Haswell, 1893) -- valid
  Temnohaswellia novaezealandiae (Haswell, 1887) -- valid
  Temnohaswellia simulator (Haswell, 1924) -- valid
  Temnomonticellia aurantica (Haswell, 1900) -- valid
  Temnomonticellia quadricornis (Haswell, 1887) -- valid
  Temnomonticellia tasmanica (Haswell, 1900) -- valid
  Temnosewellia caeca (Haswell, 1900) -- valid
  Temnosewellia dendyi (Haswell, 1893) -- valid
  Temnosewellia engaei (Haswell, 1893) -- valid
  Temnosewellia fasciata (Haswell, 1888) -- valid
  Temnosewellia minor (Haswell, 1888) -- valid
  Tephrodornis Swainson, 1832 -- valid
  Terpsiphone cinnamomea talautensis A. B. Meyer & Wiglesworth, 1894 -- valid
  Terpsiphone paradisi leucogaster (Swainson, 1838) -- valid
  Terpsiphone rufiventer (Swainson, 1837) -- valid
  Terpsiphone rufiventer rufiventer (Swainson, 1837) -- valid
  Tetragnatha khanjahani Biswas & Raychaudhuri, 1996 -- valid
  Tetragoniceps arenicolous Krishnaswamy, 1957 -- valid
  Tetranchyroderma dragescoi Swedmark, 1967 -- valid
  Tetranchyroderma massiliense Swedmark, 1956 -- valid
  Tetraodon maculatus Swainson, 1839 -- invalid
  Tetrosomus Swainson, 1839 -- valid
  Tetrosomus (Lactophrys) Swainson, 1839 -- invalid
  Tetrosomus (Platycanthus) Swainson, 1839 -- invalid
  Tetrosomus (Rhinesomus) Swainson, 1839 -- invalid
  Thalassema jenniferae Biseswar, 1988 -- valid
  Thalassoma Swainson, 1839 -- valid
  Thalliurus Swainson, 1839 -- invalid
  Thalliurus blochii (Swainson, 1839) -- invalid
  Thamnophilidae Swainson, 1824 -- valid
  Thamnophilus ambiguus Swainson, 1825 -- valid
  Thamnophilus torquatus Swainson, 1825 -- valid -- Rufous-winged Antshrike
  Tharpyna himachalensis Tikader & Biswas, 1979 -- valid
  Tharpyna indica Tikader & Biswas, 1979 -- valid
  Theclinae Swainson, 1831 -- valid -- Hairstreaks
  Theclini Swainson, 1831 -- valid
  Theliderma Swainson, 1840 -- valid
  Thelidomus Swainson, 1840 -- invalid
  Themacrys ukhahlamba Griswold, 1990 -- valid
  Theria Parker and Haswell, 1897 -- valid
  Theridiosoma diwang Miller, Griswold & Yin, 2009 -- valid
  Theridiosoma shuangbi Miller, Griswold & Yin, 2009 -- valid
  Theridula swatiae Biswas, Saha & Raychaudhuri, 1997 -- valid
  Thlaspidula riedeli Borowiec and Swietojanska, 2001 -- valid
  Thomisus keralae Biswas & Roy, 2005 -- valid
  Thomomys talpoides cheyennensis Swenk, 1941 -- valid
  Thomomys talpoides pierreicolus Swenk, 1941 -- valid
  Thraupis episcopus cana (Swainson, 1834) -- valid
  Thryothorus genibarbis Swainson, 1838 -- invalid -- Moustached Wren
  Thryssa subspinosa Swainson, 1839 -- invalid
  Thymoites trisetaceus Peng, Yin & Griswold, 2008 -- valid
  Tiaris Swainson, 1827 -- valid -- Grassquits
  Tiaris olivaceus pusillus Swainson, 1827 -- valid
  Tibellus shikerpurensis Biswas & Raychaudhuri, 2003 -- valid
  Tibercola Koenigswald, Fejfar and Tchernov, 1992 -- invalid
  Tichodromidae Swainson, 1827 -- valid
  Tigrisoma Swainson, 1827 -- valid
  Tigrisoma mexicanum Swainson, 1834 -- valid -- Bare-throated Tiger Heron, Bare-throated Tiger-Heron, Garza-tigre mexicana, Onoré du Mexique
  Tinus arindamai Biswas & Roy, 2005 -- valid
  Tityra cayana braziliensis (Swainson, 1838) -- valid
  Todiramphus cinnamominus (Swainson, 1821) -- valid -- Micronesian Kingfisher
  Todiramphus cinnamominus cinnamominus (Swainson, 1821) -- valid
  Todiramphus cinnamominus pelewensis (Wiglesworth, 1891) -- valid
  Todirhamphus cinnamominus (Swainson, 1821) -- invalid -- Micronesian Kingfisher
  Tomopterna swani (Myers and Leviton in Leviton, Myers and Swan, 1956) -- invalid
  Tornos benjamini Cassino and Swett, 1925 -- valid
  Touit surdus chryseurus (Swainson, 1823) -- valid
  Toxostoma curvirostre (Swainson, 1827) -- valid -- Cuitlacoche pico curvo, Curve-billed Thrasher
  Toxostoma curvirostre curvirostre (Swainson, 1827) -- valid
  Trachelas devi Biswas & Raychaudhuri, 2000 -- valid
  Trachelas himalayensis Biswas, 1993 -- valid
  Trachicephalus Swainson, 1839 -- valid
  Trachusa catinula Brooks & Griswold, 1988 -- valid
  Trachusa pectinata Brooks & Griswold, 1988 -- valid
  Trachusoides Michener & Griswold, 1994 -- valid
  Trachusoides simplex Michener & Griswold, 1994 -- valid
  Trachypenaeus granulosus (Haswell, 1879) -- invalid -- coarse shrimp
  Trachypollia didyma (Swengel, 1943) -- valid -- twin drupe
  Treron bicinctus domvilii (Swinhoe, 1870) -- valid
  Treron calvus nudirostris (Swainson, 1837) -- valid
  Treron formosae Swinhoe, 1863 -- valid -- Whistling Green Pigeon
  Treron formosae formosae Swinhoe, 1863 -- valid
  Treron sieboldii sororius (Swinhoe, 1866) -- valid
  Treron sphenurus delacouri Biswas, 1950 -- valid
  Tricertia Haswell, 1883 -- valid
  Tricertia araeoceras Haswell, 1883 -- valid
  Tricholaema hirsuta (Swainson, 1821) -- valid -- Hairy-breasted Barbet
  Tricholaema hirsuta hirsuta (Swainson, 1821) -- valid
  Trioceros Swainson, 1839 -- valid
  Tripylocelis Haswell, 1907 -- valid
  Tripylocelis typica Haswell, 1907 -- valid
  Trochidon Swainson, 1840 -- invalid
  Trochocercus cyanomelas megalolophus Swynnerton, 1907 -- valid
  Troglodytidae Swainson, 1832 -- valid -- Wrens
  Trogloraptor Griswold, Audisio & Ledford, 2012 -- valid
  Trogloraptor marchingtoni Griswold, Audisio & Ledford, 2012 -- valid
  Trogloraptoridae Griswold, Audisio & Ledford, 2012 -- valid
  Trogon curucui peruvianus Swainson, 1838 -- valid
  Trogon melanurus Swainson, 1838 -- valid -- Black-tailed Trogon
  Trogon melanurus melanurus Swainson, 1838 -- valid
  Trogon mexicanus Swainson, 1827 -- valid -- Mountain Trogon, Trogón mexicano
  Trogon mexicanus mexicanus Swainson, 1827 -- valid
  Trogon viridis melanopterus Swainson, 1838 -- valid
  Trypanea stagmatica Sweet, 1930 -- invalid
  Trypodendron betulae Swaine, 1911 -- valid
  Turbanella armoricana Swedmark, 1955 -- invalid
  Turdoides plebejus platycirca (Swainson, 1837) -- valid
  Turdoides reinwardtii (Swainson, 1831) -- valid -- Blackcap Babbler
  Turdoides reinwardtii reinwardtii (Swainson, 1831) -- valid
  Turnix suscitator blakistoni (Swinhoe, 1871) -- valid
  Turnix suscitator rostratus Swinhoe, 1865 -- valid
  Typocerus lunulatus (Swederus, 1787) -- valid
  Typocerus lunulatus lunulatus (Swederus, 1787) -- valid
  Typocerus manitobensis Swaine and Hopping, 1928 -- invalid
  Tyrannus crassirostris Swainson, 1826 -- valid -- Thick-billed Kingbird, Tirano pico grueso
  Tyrannus crassirostris crassirostris Swainson, 1826 -- valid
  Tyrannus vociferans Swainson, 1826 -- valid -- Cassin's Kingbird, Tirano gritón
  Tyrannus vociferans vociferans Swainson, 1826 -- valid
  Tyto capensis pithecops (Swinhoe, 1866) -- invalid
  Tyto longimembris pithecops (Swinhoe, 1866) -- valid
  Ubacisi Griswold, 2001 -- valid
  Ubacisi capensis (Griswold, 1987) -- valid
  Udeocorini Sweet, 1967 -- valid
  Ulakanthura crassicornis (Haswell, 1881) -- valid
  Ulwembua Griswold, 1987 -- valid
  Ulwembua antsiranana Griswold, 1997 -- valid
  Ulwembua denticulata Griswold, 1987 -- valid
  Ulwembua nigra Griswold, 2001 -- valid
  Ulwembua outeniqua Griswold, 1987 -- valid
  Ulwembua pulchra Griswold, 1987 -- valid
  Ulwembua ranomafana Griswold, 1997 -- valid
  Ulwembua usambara Griswold, 2001 -- valid
  Umwani Griswold, 2001 -- valid
  Umwani anymphos Griswold, 2001 -- valid
  Umwani artigamos Griswold, 2001 -- valid
  Uncinateridae Reiswig, 2002 -- valid
  Unio atrata Swainson, 1823 -- invalid
  Unio cuneatus Swainson, 1823 -- invalid
  Unio gigas Swainson, 1824 -- invalid
  Unio pustulata Swainson, 1840 -- invalid
  Unio truncatus Swainson, 1823 -- invalid
  Uniopsis Swainson, 1840 -- invalid
  Uniopsis mytiloides Swainson, 1840 -- invalid
  Upupa epops senegalensis Swainson, 1837 -- valid
  Urbanus doryssus (Swainson, 1831) -- valid -- White-tailed Longtail
  Urbanus doryssus doryssus (Swainson, 1831) -- valid
  Urichthys Swainson, 1839 -- invalid
  Urocissa erythroryncha brevivexilla Swinhoe, 1874 -- valid
  Urosphena Swinhoe, 1877 -- valid
  Urosphena squameiceps (Swinhoe, 1863) -- valid -- Asian Stubtail
  Urosphena squameiceps squameiceps (Swinhoe, 1863) -- invalid
  Ursus americanus pugnax Swarth, 1911 -- valid
  Ursus thibetanus formosanus Swinhoe, 1864 -- valid
  Urticina mcpeaki Hauswaldt and Pearson, 1999 -- valid
  Uvik Griswold, 2001 -- valid
  Uvik vulgaris Griswold, 2001 -- valid
  Variola Swainson, 1839 -- valid
  Vazaha Griswold, 1997 -- valid
  Vazaha toamasina Griswold, 1997 -- valid
  Veniliornis affinis (Swainson, 1821) -- valid -- Red-stained Woodpecker
  Veniliornis affinis affinis (Swainson, 1821) -- valid
  Venusia obsoleta (Swett, 1916) -- valid
  Vermivora Swainson, 1827 -- valid -- Vermivoras
  Vidole helicigyna Griswold, 1990 -- valid
  Vidole lyra Griswold, 1990 -- valid
  Vidole sothoana Griswold, 1990 -- valid
  Vireolanius leucotis (Swainson, 1838) -- valid -- Slaty-capped Shrike-Vireo
  Vireolanius leucotis leucotis (Swainson, 1838) -- valid
  Viverra zibetha ashtoni Swinhoe, 1864 -- valid
  Vulpes vulpes hoole Swinhoe, 1870 -- valid
  Wanzia Griswold, 1998 -- valid
  Wanzia fako Griswold, 1998 -- valid
  Wendilgarda muji Miller, Griswold & Yin, 2009 -- valid
  Wierzejskiella fluviatilis Neiswestnowa-Shadina, 1935 -- valid
  Xanthomyza Swainson, 1837 -- valid
  Xanthorhoe dodata Swett and Cassino, 1920 -- invalid
  Xanthorhoe macdunnoughi Swett, 1918 -- valid
  Xanthorhoe ramaria Swett and Cassino, 1920 -- valid
  Xanthorhoe reclivisata Swett and Cassino, 1920 -- valid
  Xanthotype attenuaria Swett, 1918 -- valid
  Xanthotype barnesi Swett, 1918 -- valid
  Xanthotype rufaria Swett, 1918 -- valid
  Xanthotype urticaria Swett, 1918 -- valid -- False Crocus Geometer
  Xenodasys Swedmark, 1967 -- valid
  Xenodasys sanctigoulveni Swedmark, 1967 -- valid
  Xenophrys auralensis (Ohler, Swan and Daltry, 2002) -- valid
  Xerochlora inveterascaria (Swett, 1907) -- valid
  Xeroheriades Griswold, 1986 -- valid
  Xeroheriades micheneri Griswold, 1986 -- valid
  Xevioso amica Griswold, 1990 -- valid
  Xevioso aululata Griswold, 1990 -- valid
  Xevioso colobata Griswold, 1990 -- valid
  Xevioso jocquei Griswold, 1990 -- valid
  Xevioso kulufa Griswold, 1990 -- valid
  Xevioso lichmadina Griswold, 1990 -- valid
  Xevioso orthomeles Griswold, 1990 -- valid
  Xiphasia Swainson, 1839 -- valid
  Xiphasia setifer Swainson, 1839 -- valid -- hairtailed blenny, hairtailed blenny, snake blenny, snake blenny
  Xiphichilus tenuissimoides Swain, 1967 -- valid
  Xiphorhynchus Swainson, 1827 -- valid
  Xiphorhynchus flavigaster Swainson, 1827 -- valid -- Ivory-billed Woodcreeper, Trepatroncos bigotudo
  Xiphorhynchus flavigaster flavigaster Swainson, 1827 -- valid
  Xylocopa tranquebarorum (Swederus, 1787) -- valid
  Xyloterinus Swaine, 1918 -- valid
  Xysticus bengalensis Tikader & Biswas, 1974 -- valid
  Xysticus himalayaensis Tikader & Biswas, 1974 -- valid
  Xysticus kali Tikader & Biswas, 1974 -- valid
  Yuhina torqueola (Swinhoe, 1870) -- valid
  Zanclostomus Swainson, 1837 -- valid
  Zanclostomus calyorhynchus meridionalis (A. B. Meyer & Wiglesworth, 1896) -- valid
  Zausodes cinctus Krishnaswamy -- valid
  Zebrasoma Swainson, 1839 -- valid
  Zoarcidae Swainson, 1839 -- valid -- eelpouts, lycodes, viruelas, viviparous blennies
  Zoica harduarae (Biswas & Roy, 2008) -- valid
  Zoma dibaiyin Miller, Griswold & Yin, 2009 -- valid
  Zonaria spadicea (Swainson, 1823) -- valid -- chestnut cowrie
  Zonitis aurea MacSwain, 1951 -- valid
  Zonitis vittigera propinqua MacSwain, 1951 -- valid
  Zonotrichia Swainson, 1832 -- valid -- Crowned Sparrows
  Zonotrichia capensis subtorquata Swainson, 1837 -- valid
  Zosterops anomalus A. B. Meyer & Wiglesworth, 1896 -- valid -- Black-ringed White-eye
  Zosterops atrifrons subatrifrons A. B. Meyer & Wiglesworth, 1896 -- valid
  Zosterops ceylonensis Holdsworth, 1872 -- valid -- Sri Lanka White-eye
  Zosterops erythropleurus Swinhoe, 1863 -- valid -- Chestnut-flanked White-eye
  Zosterops everetti babelo A. B. Meyer & Wiglesworth, 1895 -- valid
  Zosterops japonicus simplex Swinhoe, 1861 -- valid
  Zosterops pallidus Swainson, 1838 -- valid -- Cape White-eye
  Zosterops pallidus pallidus Swainson, 1838 -- valid
  Zosterops salvadorii A. B. Meyer & Wiglesworth, 1894 -- valid -- Enggano White-eye
 
 Kingdom Fungi
  Annulatascaceae S.W. Wong, K.D. Hyde & E.B.G. Jones, 1998 -- accepted
  Arthoniales Henssen ex D. Hawksw. & O.E. Erikss., 1986 -- accepted
  Ascodichaenaceae D. Hawksw. & Sherwood, 1982 -- accepted
  Ascoporiaceae Kutorga & D. Hawksw., 1997 -- accepted
  Aspidotheliaceae Räsänen ex J.C. David & D. Hawksw., 1991 -- accepted
  Asterinales M.E. Barr ex D. Hawksw. O.E. Erikss. -- not accepted
  Bilimbiospora Auerswald, 1861 -- not accepted
  Bryoria Brodo & D. Hawksw. -- accepted
  Bryoria abbreviata (Müll. Arg.) Brodo & D. Hawksw. -- accepted
  Bryoria bicolor (Ehrh.) Brodo & D. Hawksw. -- accepted
  Bryoria capillaris (Ach.) Brodo & D. Hawksw. -- accepted
  Bryoria carlottae Brodo & D. Hawksw. -- accepted
  Bryoria cervinula Motyka ex Brodo & D. Hawksw. -- accepted
  Bryoria chalybeiformis (L.) Brodo & D. Hawksw. -- accepted
  Bryoria fremontii (Tuck.) Brodo & D. Hawksw. -- accepted
  Bryoria friabilis Brodo & D. Hawksw. -- accepted
  Bryoria furcellata (Fr.) Brodo & D. Hawksw. -- accepted
  Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. -- accepted
  Bryoria glabra (Motyka) Brodo & D. Hawksw. -- accepted
  Bryoria implexa (Hoffm.) Brodo & D. Hawksw. -- accepted
  Bryoria lanestris (Ach.) Brodo & D. Hawksw. -- accepted
  Bryoria nadvornikiana (Gyeln.) Brodo & D. Hawksw. -- accepted
  Bryoria nitidula (Th. Fr.) Brodo & D. Hawksw. -- accepted
  Bryoria oregana (Nyl.) Brodo & D. Hawksw. -- accepted
  Bryoria pikei Brodo & D. Hawksw. -- accepted
  Bryoria pseudocapillaris Brodo & D. Hawksw. -- accepted
  Bryoria pseudofuscescens (Gyeln.) Brodo & D. Hawksw. -- accepted
  Bryoria salazinica Brodo & D. Hawksw. -- accepted
  Bryoria simplicior (Vain.) Brodo & D. Hawksw. -- accepted
  Bryoria spiralifera Brodo & D. Hawksw. -- accepted
  Bryoria subcana (Nyl. ex Stizenb.) Brodo & D. Hawksw. -- accepted
  Bryoria subdivergens (Ĺ.E. Dahl) Brodo & D. Hawksw. -- accepted
  Bryoria tenuis (Ĺ.E. Dahl) Brodo & D. Hawksw. -- accepted
  Bryoria tortuosa (G. Merr.) Brodo & D. Hawksw. -- accepted
  Bryoria trichodes (Michx.) Brodo & D. Hawksw. -- accepted
  Bryoria trichodes var. americana (Motyka) Brodo & D. Hawksw. -- accepted
  Bryoria trichodes var. trichodes (Michx.) Brodo & D. Hawksw. -- accepted
  Claurouxia D. Hawksw. -- accepted
  Coccocarpia erythroxyli (Spreng.) Swinscow -- accepted
  Coccotremataceae Henssen ex J.C. David & D. Hawksw., 1991 -- accepted
  Collema tenax (Sw.) Ach. -- accepted
  Diporothecaceae R.K. Mibey & D. Hawksw., 1995 -- accepted
  Dirinaria picta (Sw.) Clem. & Shear -- accepted
  Fulgensia fulgens (Sw.) Elenkin -- accepted
  Gyalectales Henssen ex D. Hawksw. & O.E. Erikss., 1986 -- not accepted
  Lizonia salicorniae (Auerswald) Auerswald -- not accepted
  Meliolales Gäum. ex D. Hawksw. & O.E. Erikss., 1986 -- accepted
  Mycosphaerella salicorniae (Auerswald) Petrak -- accepted
  Nephromataceae Wetm. ex J.C. David & D. Hawksw., 1991 -- accepted
  Ochrolechia frigida (Sw.) Lynge -- accepted
  Odontotremataceae D. Hawksw. & Sherwood, 1982 -- accepted
  Orphniospora moriopsis (A. Massal.) D. Hawksw. -- accepted
  Patellariales D. Hawksw. & O.E. Erikss., 1986 -- accepted
  Pertusariales M. Choisy ex D. Hawksw. & O.E. Erikss., 1986 -- accepted
  Phlyctidaceae Poelt & Vezda ex J.C. David & D. Hawksw., 1991 -- accepted
  Phyllopsora confusa Swinscow & Krog -- accepted
  Physcia tenella var. marina (A. Nyl.) D. Hawksw. -- accepted
  Pleospora herbarum var. salicorniae Auerswald, 1860 -- not accepted
  Polychidium muscicola (Sw.) Gray -- accepted
  Protoscyphaceae Kutorga & D. Hawksw., 1997 -- accepted
  Pseudephebe minuscula (Arnold) Brodo & D. Hawksw. -- accepted
  Pyrenulales Fink ex D. Hawksw. & O.E. Erikss., 1986 -- accepted
  Pyxine cocoes (Sw.) Nyl. -- accepted
  Ramalina celastri (Spreng.) Krog & Swinscow -- accepted
  Sordariales Chad. ex D. Hawksw. & O.E. Erikss., 1986 -- accepted
  Sphaerella salicorniae (Auerswald) Auerswald -- not accepted
  Sphaeria salicorniae Auerswald -- not accepted
  Teloschistes flavicans (Sw.) Norman -- accepted
  Thamnolia vermicularis (Sw.) Ach. ex Schaer. -- accepted
  Thrombiaceae Poelt ex J.C. David & D. Hawksw., 1991 -- accepted
  Umbillicaria hirsuta (Sw. ex Westr.) Hoffm. -- accepted
  Ustilago nuda (C.N. Jensen) Kellerm. & Swingle -- accepted -- loose smut of barley
  Verrucariales Mattick ex D. Hawksw. & O.E. Erikss., 1986 -- accepted
  Vezdaeaceae Poelt & Vezda ex J.C. David & D. Hawksw., 1991 -- accepted
  Vizellaceae H.J. Swart, 1971 -- accepted
  Zopfiaceae G. Arnaud ex D. Hawksw., 1992 -- accepted
 
 Kingdom Plantae
  Abrodictyum rigidum (Sw.) Ebihara & Dubuisson -- accepted -- stiff bristle fern
  Abutilon americanum (L.) Sweet -- not accepted
  Abutilon auritum (Wall. ex Link) Sweet -- accepted -- Asian Indian mallow
  Abutilon grandifolium (Willd.) Sweet -- accepted -- hairy Indian mallow
  Abutilon hirtum (Lam.) Sweet -- accepted -- Florida Keys Indian mallow
  Abutilon incanum (Link) Sweet -- accepted -- Indian mallow, pelotazo, shrubby Indian mallow
  Abutilon incanum ssp. incanum (Link) Sweet -- not accepted -- pelotazo
  Abutilon indicum (L.) Sweet -- accepted -- monkeybush
  Abutilon mollicomum (Willd.) Sweet -- accepted -- Sonoran Indian mallow
  Abutilon mollissimum (Cav.) Sweet -- accepted
  Abutilon permolle (Willd.) Sweet -- accepted -- coastal Indian mallow
  Abutilon triquetrum (L.) Sweet -- not accepted
  Abutilon umbellatum (L.) Sweet -- not accepted -- umbrella Indian mallow
  Acacia calamifolia Sweet ex Lindl. -- accepted -- broom wattle, wallowa
  Acacia pachyceras Sw. -- accepted
  Acacia villosa (Sw.) Willd. -- not accepted
  Acalypha reptans Sw. -- accepted
  Acanthospermum humile (Sw.) DC. -- accepted -- low starbur, low starburr
  Achnatherum acutum (Swallen) Valdés-Reyna & Barkworth -- accepted
  Achnatherum altum (Swallen) Hoge & Barkworth -- accepted
  Achnatherum bracteatum (Swallen) Valdés-Reyna & Barkworth -- accepted
  Achnatherum caudatum (Trin.) S.W.L. Jacobs & J. Everett -- not accepted -- Chilean ricegrass
  Achnatherum curvifolium (Swallen) Barkworth -- accepted -- Guadalupe needlegrass, Guadalupe ricegrass
  Achnatherum diegoense (Swallen) Barkworth -- accepted -- San Diego County needlegrass, San Diego needlegrass
  Achnatherum latiglume (Swallen) Barkworth -- accepted -- Sierra needlegrass
  Achnatherum lemmonii var. lemmonii (Swallen) Barkworth -- not accepted -- Lemmon needle grass, Lemmon's needlegrass
  Achnatherum lobatum (Swallen) Barkworth -- accepted -- little awn needlegrass, littleawn needlegrass
  Acmella uliginosa (Sw.) Cass. -- accepted
  Acostia Swallen -- accepted
  Acostia gracilis Swallen -- accepted
  Acrodiclidium salicifolium (Sw.) Griseb. -- not accepted
  Actinostachys pennula (Sw.) Hook. -- accepted -- ray fern, ray spiked fern
  Adenorima punicea (Sw.) Raf. -- not accepted
  Adiantum deltoideum Sw. -- accepted
  Adiantum fragile Sw. -- accepted -- fragile maidenhair
  Adiantum fragile var. fragile Sw. -- accepted -- fragile maidenhair
  Adiantum hispidulum Sw. -- accepted -- rough maidenhair
  Adiantum lucidum (Cav.) Sw. -- accepted
  Adiantum macrophyllum Sw. -- accepted -- largeleaf maidenhair
  Adiantum tenerum Sw. -- accepted -- fan maidenhair
  Aechmea bracteata (Sw.) Griseb. -- accepted
  Aegiphila elata Sw. -- accepted -- tall spiritweed
  Aeschrion excelsa (Sw.) Kuntze -- not accepted
  Aeschynomene sensitiva Sw. -- accepted -- sensitive jointvetch
  Aeschynomene sensitiva var. sensitiva Sw. -- accepted -- sensitive jointvetch
  Agrostis abietorum Swallen -- not accepted
  Agrostis arcta Swallen -- not accepted
  Agrostis aristiglumis Swallen -- not accepted -- Point Reyes bentgrass
  Agrostis boyacensis Swallen & García-Barr. -- accepted
  Agrostis compressa (Sw.) Poir. -- not accepted
  Agrostis digitata (Sw.) Poir. -- not accepted
  Agrostis exserta Swallen -- accepted
  Agrostis hooveri Swallen -- accepted -- Hoover's bentgrass
  Agrostis laxissima Swallen -- accepted
  Agrostis lehmannii Swallen -- accepted
  Agrostis purpurascens Sw. -- not accepted
  Agrostis scabra var. geminata (Trin.) Swallen -- not accepted
  Agrostis scabrifolia Swallen -- accepted
  Agrostis vesca Swallen -- not accepted
  Agrostis vinosa Swallen -- not accepted
  Ailanthus altissima (Mill.) Swingle -- accepted -- copal tree, tree of heaven, tree-of-heaven
  Aira andraei Auersw. in Andrae -- not accepted
  Alchornea Sw. -- accepted
  Alchornea latifolia Sw. -- accepted -- achiotillo
  Allophylus occidentalis (Sw.) Radlk. -- not accepted
  Allophylus racemosus Sw. -- accepted -- palo de caja
  Aloe haworthii Sweet -- accepted
  Aloe huntleyana van Jaarsv. & Swanepoel -- accepted
  Aloe kaokoensis van Jaarsv., Swanepoel & A.E. van Wyk -- accepted
  Aloe karasbergensis ssp. hunsbergensis van Jaarsv. & Swanepoel -- accepted
  Aloe pavelkae van Jaarsv., Swanepoel, A.E. van Wyk & Lavranos -- accepted
  Alpinia occidentalis Sw. -- not accepted
  Alsinanthe stricta (Sw.) Rchb. -- not accepted
  Alsophila capensis var. polypodiodes (Sw.) D.S. Conant -- not accepted
  Alternanthera achyrantha (L.) R. Br. ex Sweet -- not accepted
  Alternanthera polygonoides auct. non (L.) R. Br. ex Sweet -- not accepted
  Amphibromus quadridentulus (Döll) Swallen -- accepted
  Amphibromus scabrivalvis (Trin.) Swallen -- accepted -- swamp wallaby grass
  Amphibromus scabrivalvis var. scabrivalvis (Trin.) Swallen -- accepted
  Amphilophis saccharoides (Sw.) Nash -- not accepted
  Anacampseros lanceolata (Haw.) Sweet -- accepted
  Anacampseros lanceolata ssp. lanceolata (Haw) Sweet -- accepted
  Anacampseros rufescens (Haw.) Sweet -- accepted
  Anacharis oryzoides (Swartz) Stapf -- not accepted
  Anagallis pumila Sw. -- accepted -- Florida pimpernel
  Anamomis fragrans (Sw.) Griseb. -- not accepted
  Ananthacorus angustifolius (Sw.) Underw. & Maxon -- not accepted
  Andropogon acuminatus Swallen -- not accepted
  Andropogon brevifolius Sw. -- not accepted
  Andropogon campii Swallen -- not accepted
  Andropogon cordatus Swallen -- accepted
  Andropogon fastigiata Sw. -- not accepted
  Andropogon fastigiatus Sw. -- accepted
  Andropogon maderensis Swallen -- not accepted
  Andropogon niveus Swallen -- not accepted
  Andropogon rhizomatus Swallen -- not accepted
  Andropogon saccharoides Sw. -- not accepted
  Andropogon saccharoides subvar. saccharoides Sw. -- not accepted
  Andropogon saccharoides var. saccharoides Sw. -- not accepted
  Andropogon scabriglumis Swallen -- accepted
  Andropogon semitectus Swallen -- not accepted
  Andropogon sericatus Swallen -- not accepted
  Andropogon spadiceus Swallen -- not accepted -- honey bluestem
  Andropogon yucatanus Swallen -- not accepted
  Anechites asperuginis (Sw.) Griseb. -- not accepted
  Aneilema nudiflorum (L.) Sweet -- not accepted
  Aneilema spiratum (L.) Sweet -- not accepted
  Anemia Sw. -- accepted
  Anemia adiantifolia (L.) Sw. -- accepted -- pine fern, pineland fern
  Anemia hirsuta (L.) Sw. -- accepted -- hairy flowering fern
  Anemia hirta (L.) Sw. -- accepted -- streambank flowering fern
  Anemia phyllitidis (L.) Sw. -- accepted
  Anisophyllum glabratum (Sw.) Klotzsch & Garcke -- not accepted
  Anthoceros crispus Sw. -- not accepted
  Anthoxanthum monticola ssp. alpinum (Sw. ex Willd.) Soreng -- accepted
  Antirhea lucida (Sw.) Hook. f. -- not accepted -- palo iloron
  Antrophyum lineatum (Sw.) Kaulf. -- accepted -- narrow lineleaf fern
  Aploleia monandra (Sw.) H.E. Moore -- not accepted
  Apochloa lutzii (Swallen) Zuloaga & Morrone -- accepted
  Apochloa sipapoense (Swallen) Zuloaga & Morrone -- accepted
  Apochloa steyermarkii (Swallen) Zuloaga & Morrone -- accepted
  Arceuthobium apachecum Hawksw. & Wiens -- not accepted -- Apache dwarf mistletoe
  Arceuthobium apachense Hawksw. & Wiens -- not accepted
  Arceuthobium californicum Hawksw. & Wiens -- not accepted -- sugar pine dwarf mistletoe
  Arceuthobium gillii Hawksw. & Wiens -- accepted -- Huachuca Mountain dwarf mistletoe
  Arceuthobium littorum Hawksw., Wiens & Nickrent -- not accepted -- coastal dwarf mistletoe
  Arceuthobium microcarpum (Engelm.) Hawksw. & Wiens -- not accepted -- western spruce dwarf mistletoe
  Arceuthobium monticola Hawksw., Wiens & Nickrent -- not accepted -- western white pine dwarf mistletoe
  Arceuthobium siskiyouense Hawksw., Wiens & Nickrent -- not accepted -- knobcone pine dwarf mistletoe
  Arceuthobium tsugense ssp. mertensianae Hawksw. & Nickrent -- not accepted -- hemlock dwarf mistletoe
  Arceuthobium vaginatum ssp. cryptopodum (Engelm.) Hawksw. & Wiens -- accepted -- pineland dwarf mistletoe, ponderosa pine dwarf mistletoe
  Arctostaphylos klamathensis S.W. Edwards, Keeler-Wolf & W. Knight -- accepted -- Klamath manzanita
  Ardisia Sw. -- accepted -- marlberry
  Ardisia tinifolia Sw. -- accepted
  Argemone intermedia auct. non Sweet -- not accepted
  Argemone mexicana var. ochroleuca (Sweet) Lindl. -- not accepted
  Argemone ochroleuca Sweet -- accepted -- pale Mexican pricklypoppy
  Argyreia speciosa (L. f.) Sweet -- not accepted
  Argythammia candicans Sw. -- not accepted
  Argythamnia candicans Sw. -- accepted -- sharpleaf silverbush
  Aristida planifolia Swallen -- not accepted
  Aristida rhizomophora Swallen -- accepted -- Florida threeawn
  Aristolochia grandiflora Sw. -- accepted -- pelicanflower
  Aronia floribunda (Lindl.) Sweet -- not accepted
  Arthrostylidium spinosum Swallen -- not accepted
  Aspidium biserratum Sw. -- not accepted
  Aspidium invisum Sw. -- not accepted
  Asplenium auriculatum Sw. -- accepted -- treetrunk spleenwort
  Asplenium auritum Sw. -- accepted -- eared spleenwort
  Asplenium auritum var. auritum Sw. -- not accepted -- eared spleenwort
  Asplenium laetum Sw. -- accepted -- brownstem spleenwort
  Asplenium myriophyllum (Sw.) C. Presl -- accepted -- limestone spleenwort
  Asplenium praemorsum Sw. -- not accepted
  Asplenium pumilum Sw. -- accepted -- dwarf spleenwort
  Asprella hexandra (Sw.) Roem. & Schult. -- not accepted
  Asprella hexandra (Sw.) P. Beauv. -- not accepted
  Asprella monandra (Sw.) Roem. & Schult. -- not accepted
  Astomum muehlenbergianum (Sw.) Grout -- accepted -- Muehlenberg's astomum moss
  Astomum muhlenbergianum (Sw.) Grout -- accepted
  Astonia S.W.L. Jacobs -- accepted
  Astonia australiensis (Aston) S.W.L. Jacobs -- accepted
  Astrolepis sinuata (Lag. ex Sw.) D.M. Benham & Windham -- accepted -- wavy scaly cloakfern
  Astrolepis sinuata ssp. sinuata (Lag. ex Sw.) D.M. Benham & Windham -- accepted -- wavy scaly cloakfern
  Ateramnus lucidus (Sw.) Rothm. -- not accepted
  Austrostipa S.W.L. Jacobs & J. Everett -- accepted
  Austrostipa elegantissima (Labill.) S.W.L. Jacobs & J. Everett -- accepted
  Austrostipa plumigera (Hughes) S.W.L. Jacobs & J. Everett -- accepted
  Austrostipa scabra (Lindl.) S.W.L. Jacobs & J. Everett -- accepted
  Axonopus anomalus Swallen -- not accepted
  Axonopus arsenei Swallen -- accepted
  Axonopus caespitosus Swallen -- not accepted
  Axonopus ciliatifolius Swallen -- accepted
  Axonopus comatus (Mez) Swallen -- accepted
  Axonopus compressus (Sw.) P. Beauv. -- accepted -- broadleaf carpetgrass
  Axonopus compressus var. compressus (Sw.) P. Beauv. -- not accepted
  Axonopus digitatus (Sw.) P. Beauv. -- not accepted
  Axonopus elongatus Swallen -- not accepted
  Axonopus erectus Swallen -- not accepted
  Axonopus flabelliformis Swallen -- accepted
  Axonopus flabelliformis var. flabelliformis Swallen -- not accepted
  Axonopus fockei (Mez) Swallen -- not accepted
  Axonopus kaietukensis Swallen -- not accepted
  Axonopus multipes Swallen -- not accepted
  Axonopus paniceus (Sw.) P. Beauv. -- not accepted
  Axonopus purpurellus Swallen -- not accepted
  Axonopus ramosus Swallen -- accepted
  Axonopus rhizomatosus Swallen -- not accepted
  Axonopus steyermarkii Swallen -- accepted
  Axonopus villosus Swallen -- accepted
  Bacopa repens (Sw.) Wettst. -- accepted -- creeping waterhyssop
  Beadlea elata (Sw.) Small -- not accepted
  Beilschmiedia pendula (Sw.) Hemsl. -- accepted -- slugwood
  Bellonia spinosa Sw. -- accepted
  Blechnum lanceola Sw. -- accepted
  Blechnum lineatum (Sw.) C. Chr. -- accepted -- rockbank midsorus fern
  Blechnum polypodioides (Sw.) Kuhn -- not accepted
  Blechnum unilaterale Sw. -- not accepted
  Blepharolejeunea S.W. Arnell -- accepted
  Boehmeria cylindrica (L.) Sw. -- accepted -- small-spike false nettle, smallspike false nettle
  Bolbitis aliena (Sw.) Alston -- accepted -- diamond creepingfern
  Bolbitis nicotianifolia (Sw.) Alston -- accepted -- thinleaf creepingfern
  Bothriochloa campii (Swallen) de Wet -- accepted
  Bothriochloa saccharoides (Sw.) Rydb. -- accepted -- silver bluestem
  Bothriochloa saccharoides ssp. saccharoides (Sw.) Rydb. -- not accepted
  Bothriochloa saccharoides var. saccharoides (Sw.) Rydb. -- accepted
  Botrychium Sw. -- accepted -- grape-fern, grapefern, moonwort
  Botrychium lunaria (L.) Sw. -- accepted -- botryche lunaire, common moonwort, moonwort grapefern
  Botrychium lunarioides (Michx.) Sw. -- accepted -- prostrate grapefern, winter grapefern
  Botrychium ternatum auct. non (Thunb.) Sw. -- not accepted
  Botrychium virginianum (L.) Sw. -- accepted -- botryche de Virginie, common grapefern, rattlesnake fern
  Bourreria virgata (Sw.) G. Don -- accepted -- roble de guayo
  Bouteloua annua Swallen -- accepted
  Bouteloua chasei Swallen -- accepted
  Bouteloua distans Swallen -- accepted
  Bouteloua eriopoda var. eriostachya Swallen -- not accepted
  Bouteloua eriostachya (Swallen) Reeder -- accepted
  Bouteloua glandulosa (Cerv.) Swallen -- not accepted
  Bouteloua johnstonii Swallen -- accepted
  Bouteloua latifolia Swallen -- not accepted
  Bouteloua nervata Swallen -- accepted
  Bouteloua pedicellata Swallen -- accepted
  Bouteloua reflexa Swallen -- accepted
  Bouteloua varia (Swallen) Columbus -- accepted
  Bouteloua williamsii Swallen -- accepted
  Brachiaria albicoma (Swallen & García-Barr.) Zuloaga & Soderstr. -- not accepted
  Brachiaria fasciculata (Sw.) S.T. Blake -- not accepted
  Brachiaria fasciculata (Sw.) Parodi -- not accepted -- browntop signalgrass
  Brachiaria fasciculata var. carthaginense (Sw.) Beetle -- not accepted
  Brachiaria fasciculata var. fasciculata (Sw.) Parodi -- not accepted
  Brachiaria mollis (Sw.) Parodi -- not accepted -- soft signalgrass
  Brachiaria oblita (Swallen) Tovar -- not accepted
  Bromopsis attenuata (Swallen) Holub -- not accepted
  Bromopsis densa (Swallen) Holub -- not accepted
  Bromopsis pinetorum (Swallen) Holub -- not accepted
  Bromus attenuatus Swallen -- accepted
  Bromus cernuus Swallen -- not accepted
  Bromus densus Swallen -- accepted
  Bromus meyeri Swallen -- accepted
  Bromus pinetorum Swallen -- not accepted
  Bromus pubescens var. laeviglumis (Scribn. ex Shear) Swallen -- not accepted
  Bromus purgans var. laeviglumis (Scribn. ex Shear) Swallen -- not accepted
  Brosimum Sw. -- accepted
  Brosimum alicastrum Sw. -- accepted -- breadnut
  Brosimum alicastrum ssp. alicastrum Sw. -- not accepted -- ramon
  Brosimum spurium Sw. -- not accepted
  Bruchia flexuosa (Sw. ex Schwaegr.) C. Müll. -- accepted -- bruchia moss
  Brunfelsia undulata auct. non Sw. -- not accepted -- Jamaican raintree
  Brysonima coriacea (Sw.) DC. -- not accepted
  Bryum pallens (Brid.) Sw. in Röhl. -- accepted -- bryum moss
  Buchlomimus nervatus (Swallen) Reeder, C. Reeder & Rzed. -- not accepted
  Buchnera elongata Sw. -- not accepted
  Bulbulus Swallen -- not accepted
  Bulbulus nervatus Swallen -- not accepted
  Bumelia Sw. -- not accepted -- bumelias
  Bumelia salicifolia (L.) Sw. -- not accepted
  Buxus laevigata (Sw.) Spreng. -- accepted -- smooth box
  Byrsonima coriacea (Sw.) DC. -- not accepted
  Caesalpinia pulcherrima (L.) Sw. -- accepted -- dwarf poinciana, flowerfence, pride-of-Barbados
  Calamagrostis boyacensis Swallen & García-Barr. -- accepted
  Calamagrostis brevipaleata Swallen -- not accepted
  Calamagrostis divergens Swallen -- accepted
  Calamagrostis insperata Swallen -- not accepted
  Calamagrostis involuta Swallen -- accepted
  Calamagrostis killipii Swallen -- accepted
  Calamagrostis naiguatensis Swallen -- not accepted
  Calamagrostis pinetorum Swallen -- accepted
  Calamagrostis pisinna Swallen -- accepted
  Calamagrostis porteri ssp. insperata (Swallen) C.W. Greene -- accepted -- Porter's reedgrass
  Calamagrostis reitzii Swallen -- accepted
  Calamagrostis scaberula Swallen -- accepted
  Calamagrostis scabriflora Swallen -- accepted
  Calamagrostis steyermarkii Swallen -- accepted
  Calamagrostis vulcanica Swallen -- accepted
  Callisia cordifolia (Sw.) E.S. Anderson & Woodson -- accepted -- Florida roseling
  Callisia monandra (Sw.) Schult. & Schult. f. -- accepted -- cojite morado
  Callistemon lanceolatus (Sw.) DC. -- not accepted
  Callistemon linearis (Schrad. & J.C. Wendl.) Colvill ex Sweet -- accepted -- narrow-leaf bottlebrush
  Callistemon pinifolius (J.C. Wendl.) Sweet -- accepted -- pine-leaf bottlebrush
  Callistemon salignus (Sm.) Colvill ex Sweet -- accepted -- stonewood, white bottlebrush, willow bottlebrush
  Callistemon speciosus (Bonpl.) Sweet -- accepted -- gray bottlebrush
  Calymperes Sw. in Web. -- accepted -- calymperes moss
  Calymperes afzelii Sw. -- accepted -- Afzel's calymperes moss
  Calyptranthes Sw. -- accepted -- lidflowers, mountainbay, spicewood
  Calyptranthes zuzygium (L.) Sw. -- accepted -- myrtle of the river, myrtle-of-the-river, spicewood
  Calystegia inflata Sweet -- not accepted
  Camaridium vestitum (Sw.) Lindl. -- not accepted
  Campylocentrum filiforme (Sw.) Cogn. ex Kuntze -- not accepted -- needleroot bentspur orchid
  Campyloneurum angustifolium (Sw.) Fée -- accepted -- narrow strapfern
  Canavalia rosea (Sw.) DC. -- accepted -- baybean
  Capillolejeunea S.W. Arnell -- not accepted
  Cardamine concatenata (Michx.) Sw. -- accepted -- cutleaf toothwort
  Cardiospermum grandiflorum Sw. -- accepted -- showy balloonvine
  Carex polystachya Sw. ex Wahlenb. -- accepted -- Caribbean sedge
  Carolinea insignis Sw. -- not accepted
  Carya glabra (Mill.) Sweet -- accepted -- pignut hickory, sweet pignut
  Carya glabra var. glabra (Mill.) Sweet -- not accepted -- pignut hickory
  Casearia sylvestris Sw. -- accepted -- crackopen
  Cassia sericea Sw. -- not accepted
  Catesbaea parviflora Sw. -- accepted -- smallflower lilythorn
  Cathestecum annuum Swallen -- not accepted
  Cathestecum brevifolium Swallen -- not accepted
  Cathestecum brevifolium var. brevifolium Swallen -- not accepted
  Cathestecum varium Swallen -- not accepted
  Catopsis nutans auct. non (Sw.) Griseb. -- not accepted -- nodding strap airplant
  Catopsis nutans (Sw.) Griseb. -- accepted -- Catopsis flores acostadas, nodding strap airplant
  Cenchrus retusus Sw. -- not accepted
  Cenchrus setosus Sw. -- not accepted
  Centaurium pulchellum (Sw.) Hayek ex Hand.-Mazz., Stadlm., Janch. & Faltis -- accepted -- branched centaury
  Centaurium pulchellum (Sw.) Druce -- not accepted -- branched centaury
  Centrochloa Swallen -- accepted
  Centrochloa singularis Swallen -- accepted
  Cephaelis Sw. -- not accepted
  Cereus longifolius Karw. ex Sweet -- not accepted
  Cereus smithianus Sweet -- not accepted
  Ceropegia schumanniana Swarupan. & Mangaly -- accepted
  Chaboissaea decumbens (Swallen) Reeder & C. Reeder -- not accepted
  Chaenomeles speciosa (Sweet) Nakai -- accepted -- flowering quince
  Chaetocarpus globosus (Sw.) Fawc. & Rendle -- accepted
  Chaetochloa setosa (Sw.) Scribn. -- not accepted
  Chamaecrista lineata (Sw.) Greene -- accepted -- narrowpod sensitive pea
  Chamaecrista lineata var. lineata (Sw.) Greene -- accepted -- narrowpod sensitive pea
  Chamaenerion latifolium (L.) Sweet -- not accepted
  Chamaeraphis setosa (Sw.) Kuntze -- not accepted
  Chaptalia albicans (Sw.) Vent. ex Steud. -- accepted -- white sunbonnets
  Cheilanthes Sw. -- accepted -- lip ferns, lipfern
  Cheilanthes lendigera (Cav.) Sw. -- accepted -- nit-bearing lip fern, nitbearing lipfern
  Cheilanthes microphylla (Sw.) Sw. -- accepted -- southern lipfern
  Cheilanthes sinuata (Lag. ex Sw.) Domin -- not accepted
  Cheilanthes tenuifolia (Burm. f.) Sw. -- accepted
  Cheilanthes vestita (Spreng.) Sw. -- not accepted
  Cheilanthes viridis Sw. -- accepted -- green cliffbrake
  Chilopsis linearis (Cav.) Sweet -- accepted -- desert willow
  Chilopsis linearis ssp. linearis (Cav.) Sweet -- accepted -- desert willow
  Chionanthus compactus Sw. -- accepted -- bridgotree
  Chionanthus ligustrinus (Sw.) Pers. -- accepted -- cabra blanca
  Chione venosa (Sw.) Urb. -- accepted -- fatpork
  Chirita mishmiensis Debbarman ex Biswas -- accepted
  Chloris Sw. -- accepted -- windmill grass, windmillgrass spp.
  Chloris aristata (Cerv.) Swallen -- not accepted
  Chloris barbata Sw. -- accepted -- swollen fingergrass
  Chloris brandegei (Vasey) Swallen -- not accepted
  Chloris ciliata Sw. -- accepted -- fringed windmill grass
  Chloris ciliata f. ciliata Sw. -- accepted
  Chloris cruciata (L.) Sw. -- accepted
  Chloris mollis (Nees) Swallen -- not accepted
  Chloris petraea Sw. -- not accepted
  Chloris polydactyla (L.) Sw. -- not accepted
  Chloris radiata (L.) Sw. -- accepted -- radiate fingergrass
  Chloris virgata Sw. -- accepted -- feather fingergrass, feather windmill grass, showy chloris
  Choenomeles speciosa (Sweet) Nakai -- not accepted -- Japanese flowering quince
  Chondrosium hirsutum (Lag.) Sweet -- not accepted
  Chondrosum chasei (Swallen) Clayton -- not accepted
  Chondrosum eriostachyum (Swallen) Clayton -- not accepted
  Chondrosum hirsutum (Lag.) Sweet -- not accepted
  Chondrosum hirsutum var. hirsutum (Lag.) Sweet -- not accepted
  Chondrosum prostratum (hort. ex Lag.) Sweet -- not accepted
  Chorisanthera pumila (Sw.) Oerst. -- not accepted
  Chrysobalanus triandrus (Sw.) Morales -- not accepted
  Chusquea angusta (Swallen) L.G. Clark -- accepted
  Chusquea longifolia Swallen -- accepted
  Chusquea mollis (Swallen) L.G. Clark -- accepted
  Chusquea sulcata Swallen -- accepted
  Chusquea tuberculosa Swallen -- accepted
  Cinclidium Sw. in Schrad. -- accepted -- cinclidium moss
  Cinclidium stygium Sw. in Schrad. -- accepted -- cinclidium moss
  Cineraria lucida Sw. -- not accepted
  Cinnamomum montanum (Sw.) Bercht. & J. Presl. -- accepted -- avispillo
  Cistus psilosepalus Sweet -- accepted
  Citrus aurantifolia (Christm.) Swingle -- not accepted
  Citrus aurantiifolia (Christm.) Swingle -- not accepted
  Citrus X aurantiifolia (Christm.) Swingle (pro. sp.) -- accepted -- key lime
  Cladium restioides (Sw.) Benth. -- not accepted
  Claytonia heterophylla (Torr. & A. Gray) Swanson -- not accepted -- variableleaf springbeauty
  Claytonia palustris Swanson & Kelley -- accepted -- Jonesville springbeauty
  Claytonia simsii Sweet -- not accepted
  Claytonia virginica var. simsii (Sweet) R.J. Davis -- not accepted
  Clerodendrum fragrans var. multiplex (Sweet) Moldenke -- not accepted
  Clerodendrum japonicum (Thunb.) Sweet -- not accepted
  Clerodendrum japonicum (Thunb.) Sweet -- accepted -- Japanese glorybower
  Clibadium erosum (Sw.) DC. -- accepted -- jackass breadnut
  Clidemia strigillosa (Sw.) DC. -- accepted -- thicket hogwood
  Clidemia umbrosa (Sw.) Cogn. -- accepted -- white hogwood
  Clinopodium brownei (Sw.) Kuntze -- accepted -- Browne's savory
  Cochleanthes flabelliformis (Sw.) R.E. Schult. & Garay -- accepted -- Cochleanthes de abanico, fanshape orchid
  Cochlidium serrulatum (Sw.) L.E. Bishop -- accepted -- toothed snailfern
  Codonoraphia craniolaria (Sw.) Oerst. -- not accepted
  Coleataenia longifolia ssp. abscissa (Swallen) Soreng -- accepted
  Colubrina elliptica (Sw.) Brizicky -- accepted -- soldierwood
  Columnea hirsuta Sw. -- accepted
  Columnea hispida Sw. -- accepted
  Columnea rutilans Sw. -- accepted
  Conostomum Sw. in Web. & Mohr -- accepted -- conostomum moss
  Conostomum boreale Sw. -- not accepted
  Conradia calycina (Sw.) Mart. -- not accepted
  Conradia craniolaria (Sw.) Mart. -- not accepted
  Conradia exserta (Sw.) Mart. -- not accepted
  Conradia pumila (Sw.) Mart. -- not accepted
  Conradia scabra (Sw.) Mart. -- not accepted
  Conradia ventricosa (Sw.) Mart. ex G. Don -- not accepted
  Coreopsis grandiflora Hogg ex Sweet -- accepted -- bigflower coreopsis, largeflower tickseed
  Coreopsis grandiflora var. grandiflora Hogg ex Sweet -- not accepted -- largeflower tickseed
  Cortaderia parviflora Swallen -- not accepted
  Cortaderia planifolia Swallen -- accepted
  Cortaderia pungens Swallen -- accepted
  Cortaderia scabriflora Swallen -- not accepted
  Cortaderia vaginata Swallen -- accepted
  Corymborchis flava (Sw.) Kuntze -- not accepted -- yellow crow orchid
  Corymborkis flava (Sw.) Kuntze -- accepted -- yellow crow orchid
  Coryphantha missouriensis (Sweet) Britton & Rose -- not accepted
  Costus spicatus (Jacq.) Sw. -- accepted -- spiked spiralflag
  Cranichis Sw. -- accepted -- helmet orchid
  Cranichis diphylla Sw. -- accepted -- Cranichis bifoliada
  Cranichis muscosa Sw. -- accepted -- cypress-knee helmet orchid
  Cranichis oligantha Sw. -- not accepted
  Cranichis stachyodes Sw. -- not accepted
  Crassipes Swallen -- not accepted
  Crassipes annuus Swallen -- not accepted
  Croton divaricatus Sw. -- not accepted
  Croton eluteria (L.) Sw. -- not accepted -- cascarilla
  Croton glandulosus var. divaricatus (Sw.) Müll. Arg. -- not accepted
  Croton globosus Sw. -- not accepted
  Croton laurinus Sw. -- accepted
  Croton micans Sw. -- accepted
  Croton nitens Sw. -- accepted
  Croton pallens Sw. -- not accepted
  Cryptochloa Swallen -- accepted
  Cryptochloa concinna (Hook. f.) Swallen -- accepted
  Cryptochloa granulifera Swallen -- not accepted
  Cryptochloa strictiflora (E. Fourn.) Swallen -- accepted
  Cryptochloa variana Swallen -- accepted
  Ctenitis effusa (Sw.) Copel. -- not accepted
  Ctenitis hirta (Sw.) Ching -- accepted -- diamondleaf lacefern
  Ctenitis hirta var. hirta (Sw.) Ching -- accepted -- diamondleaf lacefern
  Ctenium concissum Swallen -- accepted
  Ctenium plumosum (Hitchc.) Swallen -- accepted
  Cupania glabra Sw. -- accepted -- Florida cupania, Florida toadwood
  Cyathea affinis (G. Forst.) Sw. -- accepted
  Cyathea armata (Sw.) Domin -- accepted -- creeping treefern
  Cyathea aspera (L.) Sw. -- accepted
  Cyathea aspera var. aspera (L.) Sw. -- not accepted
  Cyathea capensis var. polypodioides (Sw.) -- accepted
  Cyathea dealbata (G. Forst.) Sw. -- accepted -- ponga, silver fern
  Cyathea excelsa Sw. -- accepted
  Cyathea medullaris (G. Forst.) Sw. -- accepted -- black tree fern
  Cyclamen graecum ssp. anatolicum Ietsw. -- accepted
  Cyclamen X wellensiekii Ietswaart -- accepted
  Cyclopeltis semicordata (Sw.) J. Sm. -- accepted -- lime fern
  Cyclopogon elatus (Sw.) Schltr. -- accepted -- tall ladies'-tresses
  Cydonia speciosa Sweet -- not accepted
  Cymanchum parviflorum Sw. -- not accepted
  Cymbachne fastigiata (Sw.) Roberty -- not accepted
  Cymbidium Sw. -- accepted
  Cynanchum parviflorum Sw. -- not accepted -- smallflower swallow-wort
  Cynodon ciliatus (Sw.) Raspail -- not accepted
  Cynomorium cayennense Sw. -- not accepted
  Cyperus brunneus Sw. -- not accepted
  Cyperus confertus Sw. -- accepted -- West Indian flatsedge
  Cyperus filiformis Sw. -- accepted -- wiry flatsedge
  Cyperus tenuis Sw. -- accepted -- crevice flatsedge
  Cypripedium guttatum Sw. -- accepted -- spotted lady's slipper
  Cypripedium guttatum var. guttatum Sw. -- not accepted -- spotted lady's slipper
  Cytiscus multiflorus (Aiton) Sweet -- not accepted
  Cytisus multiflorus (L'Hér.) Sweet -- accepted -- white Spanishbroom
  Danthonia charruana Swallen -- not accepted
  Danthonia dusenii var. charruana (Swallen) Roseng. & B.R. Arrill. -- not accepted
  Danthonia rhizomata Swallen -- accepted
  Danthonia secundiflora ssp. charruana (Swallen) Roseng., B.R. Arrill. & Izag. -- accepted
  Davallia solida (G. Forst.) Sw. -- not accepted
  Dendrobium Sw. -- accepted
  Dendrobium crumenatum Sw. -- accepted
  Dendroceros crispus (Sw.) Nees -- accepted
  Dendrophorbium lucidum (Sw.) C. Jeffrey -- accepted
  Dendrophylax porrectus (Rchb. f.) Carlsward & Whitten -- accepted -- needleroot airplant orchid
  Dennstaedtia cicutaria (Sw.) T. Moore -- accepted -- tropical hayscented fern
  Dennstaedtia dissecta (Sw.) T. Moore -- accepted
  Deparia acrostichoides (Sw.) M. Kato -- accepted -- silver false spleenwort
  Deschampsia andraei Aursw. -- not accepted
  Deschampsia mexicana Swallen -- not accepted
  Desmodium adscendens (Sw.) DC. -- accepted -- zarzabacoa galana
  Desmodium axillare (Sw.) DC. -- accepted -- zarzabacoa de monte
  Desmodium axillare var. axillare (Sw.) DC. -- accepted -- zarzabacoa de monte
  Desmodium scorpiurus (Sw.) Desv. -- accepted -- scorpion ticktrefoil
  Desmodium spirale (Sw.) DC. -- not accepted
  Desmodium tortuosum (Sw.) DC. -- accepted -- Dixie tick trefoil, Dixie ticktrefoil
  Dicanthelium acuminatum (Sw.) Gould & C.A. Clark -- not accepted
  Dichaea echinocarpa (Sw.) Lindl. -- not accepted
  Dichaea muricata auct. non (Sw.) Lindl. -- not accepted -- mountain leafystem orchid
  Dichaea swartzii (C. Schweinf.) Garay & H.R. Sweet -- not accepted -- Swartz's leafystem orchid
  Dichanthelium acuminatum (Sw.) Gould & C.A. Clark -- accepted -- hotsprings panicum, hotsprings rosette grass, tapered rosette grass
  Dichanthelium acuminatum f. acuminatum (Sw.) Gould & C.A. Clark -- not accepted
  Dichanthelium acuminatum var. acuminatum (Sw.) Gould & C.A. Clark -- accepted -- tapered rosette grass
  Dichanthelium aequivaginatum (Swallen) Zuloaga -- accepted
  Dichanthelium hirstii (Swallen) Kartesz -- accepted -- Hirst's panicgrass
  Dichanthelium itatiaiae (Swallen) Zuloaga -- accepted
  Dichanthelium pinetorum (Swallen) LeBlond -- accepted
  Dichanthelium telmatum (Swallen) Zuloaga -- accepted
  Dichanthelium umbonulatum (Swallen) Davidse -- accepted
  Dichanthium saccharoides (Sw.) Roberty -- not accepted
  Dichanthium saccharoides subvar. saccharoides (Sw.) Roberty -- not accepted
  Dichondra repens var. sericea (Sw.) Choisy -- not accepted
  Dichondra sericea Sw. -- accepted -- silver-leaf pony's-foot, silverleaf ponysfoot
  Dicksonia squarrosa (G. Forst.) Sw. -- accepted -- hard treefern
  Dicranum polyphyllum Swartz -- not accepted
  Dicranum polysetum Sw. -- accepted -- dicranum moss
  Didymocarpus meeboldii W.W. Sm. & Ramaswami -- not accepted
  Didymoglossum pusillum (Sw.) Desv. -- accepted -- sidesaddle bristle fern
  Didymopanax attenuatus (Sw.) Marchal -- not accepted
  Diectomis fastigiata (Sw.) Kunth -- not accepted
  Diectomis fastigiata (Sw.) P. Beauv. -- not accepted -- foldedleaf grass
  Digitaria albicoma Swallen -- not accepted
  Digitaria arenicola (Swallen) Beetle -- accepted -- green sprangletop, sand crabgrass, sand witchgrass
  Digitaria cayoensis Swallen -- accepted
  Digitaria ciliata var. arenicola (Swallen) R.D. Webster -- not accepted
  Digitaria cognata var. arenicola (Swallen) R.D. Webster -- not accepted
  Digitaria digitata (Sw.) Urb. -- not accepted
  Digitaria diversiflora Swallen -- not accepted
  Digitaria glabriculmis Swallen -- not accepted
  Digitaria hirsuta Swallen -- not accepted
  Digitaria induta Swallen -- accepted
  Digitaria multiflora Swallen -- accepted
  Digitaria obtusa Swallen -- not accepted
  Digitaria panicea (Sw.) Urb. -- accepted -- millet crabgrass
  Digitaria parva Swallen -- accepted
  Digitaria patens (Swallen) Henrard -- accepted -- Texas cottontop
  Digitaria purpurea Swallen -- accepted
  Digitaria vaginata (Sw.) Magnier -- not accepted
  Dilomilis montana (Sw.) Summerh. -- accepted -- parrotbeak orchid
  Diodella sarmentosa (Sw.) Bacigalupo & E.L. Cabral -- accepted
  Diodia sarmentosa Sw. -- not accepted -- tropical buttonweed
  Diplazium Sw. -- accepted -- twin-sorus fern, twinsorus fern
  Diplazium acrostichoides (Sw.) Butters -- not accepted
  Diplazium esculentum (Retz.) Sw. -- accepted -- vegetable fern
  Diplazium grandifolium (Sw.) Sw. -- accepted -- largeleaf twinsorus fern
  Disocactus alatus (Sw.) Kimnach -- not accepted
  Dissanthelium aequale Swallen & Tovar -- not accepted
  Dissanthelium breve Swallen & Tovar -- accepted
  Dissanthelium brevifolium Swallen & Tovar -- accepted
  Dissanthelium densum Swallen & Tovar -- not accepted
  Dissanthelium expansum Swallen & Tovar -- not accepted
  Dissanthelium laxifolium Swallen & Tovar -- accepted
  Dissanthelium longiligulatum Swallen & Tovar -- accepted
  Dissanthelium pygmaeum Swallen & Tovar -- accepted
  Dissanthelium rauhii Swallen & Tovar -- accepted
  Dissanthelium semitectum Swallen & Tovar -- accepted
  Ditrichum lineare (Sw.) Lindb. -- accepted -- ditrichum moss
  Dolicholus reticulatus (Sw.) Millsp. -- not accepted
  Dolichos rosea Sw. -- not accepted
  Drepanocladus revolvens (Sw.) Warnst. -- not accepted
  Drepanocladus revolvens var. revolvens (Sw.) Warnst. -- not accepted
  Dryopteris deltoidea (Sw.) Kuntze -- not accepted
  Dryopteris effusa (Sw.) Urb. -- not accepted
  Dryopteris hirta (Sw.) Kuntze -- not accepted
  Dryopteris patens (Sw.) Kuntze -- not accepted
  Dryopteris patula (Sw.) Underw. -- accepted
  Dryopteris serra (Sw.) Kuntze -- not accepted
  Dryopteris thelypteris auct. non (L.) Sw. -- not accepted
  Drypetes lateriflora (Sw.) Krug & Urb. -- accepted -- Guiana plum
  Dumortiera hirsuta (Sw.) Nees -- accepted
  Dumortiera hirsuta var. hirsuta (Sw.) Nees -- accepted
  Echinolaena gracilis Swallen -- accepted
  Echinolaena nemorosa (Sw.) Kunth -- not accepted
  Echites asperuginis Sw. -- not accepted
  Ectosperma Swallen -- not accepted
  Ectosperma alexandrae Swallen -- not accepted
  Egletes prostrata (Sw.) Kuntze -- accepted -- bouton blanc, prostrate tropic daisy
  Eichhornia azurea (Sw.) Kunth -- accepted -- anchored water hyacinth, anchored waterhyacinth
  Elaphoglossum conforme (Sw.) Schott -- not accepted
  Elaphoglossum hirtum (Sw.) C. Chr. -- not accepted -- ekaha
  Elaphoglossum latifolium (Sw.) J. Sm. -- accepted -- broadleaf tonguefern
  Elaphoglossum muscosum (Sw.) T. Moore -- accepted
  Elaphoglossum peltatum (Sw.) Urb. -- accepted -- peltate tonguefern
  Elaphoglossum petiolatum (Sw.) Urb. -- accepted -- graceful tonguefern
  Elaphoglossum petiolatum var. petiolatum (Sw.) Urb. -- accepted
  Elaphoglossum simplex (Sw.) Schott ex J. Sm. -- accepted -- Rio Grande tonguefern
  Elephantopus angustifolius Sw. -- accepted -- narrowleaf elephantsfoot
  Eleusine cerealis Ehrenb. ex Sweet -- not accepted
  Eleutheranthera ruderalis (Sw.) Sch. Bip. -- accepted -- ogiera
  Elsota virgata (Sw.) Kuntze -- not accepted
  Eltroplectris calcarata (Sw.) Garay & H.R. Sweet -- accepted -- longclaw orchid
  Elymus elymoides (Raf.) Swezey -- accepted -- bottlebrush squirreltail, squirreltail, western bottle-brush grass
  Elymus elymoides ssp. elymoides (Raf.) Swezey -- accepted -- bottlebrush squirreltail, squirreltail
  Encephalartos latifolius Sweet -- not accepted
  Enydra sessilis (Sw.) DC. -- accepted -- smallray swampwort
  Epidendrum bifarium Sw. -- accepted
  Epidendrum diffusum Sw. -- accepted
  Epidendrum latifolium (Lindl.) Garay & H.R. Sweet -- not accepted -- broadleaf star orchid, Epidendrum de hoja amplia
  Epidendrum nutans Sw. -- accepted
  Epidendrum patens Sw. -- accepted -- West Indian star orchid
  Epidendrum serrulatum Sw. -- accepted -- smalltooth star orchid
  Epidendrum verrucosum Sw. -- accepted
  Eragrostis fragilis Swallen -- not accepted
  Eragrostis glutinosa (Sw.) Trin. -- accepted -- sticky lovegrass
  Eragrostis hirta var. longiramea (Swallen) Witherspoon -- accepted
  Eragrostis longiramea Swallen -- not accepted
  Eragrostis plurinodis Swallen ex Luces -- accepted
  Eragrostis prolifera (Sw.) Steud. -- accepted -- Dominican lovegrass
  Eragrostis silveana Swallen -- accepted -- Silveus' lovegrass
  Erechtites agrestis (Sw.) Standl. & Steyerm. -- not accepted
  Eremocitrus Swingle -- accepted
  Eremocitrus glauca (Lindl.) Swingle -- accepted -- Australian desert lime
  Erianthus biaristatus (Hack.) Swallen -- not accepted
  Erianthus ciliaris (Andersson) Jeswiet -- not accepted
  Erianthus ciliaris var. ciliaris (Andersson) Jeswiet -- not accepted
  Erianthus clandestinus Swallen -- not accepted
  Erianthus clandestinus Swallen ex L.B. Sm., Wassh. & R.M. Klein -- not accepted
  Erianthus glabrinodis (Hack.) Swallen -- not accepted
  Erianthus munja (Roxb.) Jeswiet -- not accepted
  Erianthus purpureus Swallen -- not accepted
  Eriochrysis glabrifolia Swallen -- not accepted
  Ernodea Sw. -- accepted
  Ernodea littoralis Sw. -- accepted -- coughbush
  Erythrodes hirtella (Sw.) Fawc. & Rendle -- not accepted -- Cuban false helmetorchid
  Escobaria missouriensis (Sweet) D.R. Hunt -- accepted -- Missouri foxtail cactus
  Escobaria missouriensis ssp. missouriensis (Sweet) D.R. Hunt -- accepted
  Escobaria missouriensis var. missouriensis (Sweet) D.R. Hunt -- not accepted -- Missouri foxtail cactus
  Eugenia axillaris (Sw.) Willd. -- accepted -- white stopper
  Eugenia buxifolia (Sw.) Willd. -- not accepted
  Eugenia cordata (Sw.) DC. -- accepted -- lathberry
  Eugenia cordata var. cordata (Sw.) DC. -- accepted -- lathberry
  Eugenia glabrata (Sw.) DC. -- accepted -- smooth rodwood
  Eugenia ligustrina (Sw.) Willd. -- accepted -- privet stopper
  Eugenia monticola (Sw.) DC. -- accepted -- birdcherry
  Eugenia procera (Sw.) Poir. -- accepted -- rockmyrtle
  Eupatorium villosum Sw. -- not accepted -- Florida Keys thoroughwort
  Euphorbia bonplandii Sweet -- not accepted
  Euphorbia crispa (Haw.) Sweet -- not accepted
  Euphorbia ehrenbergii Sweet -- not accepted
  Euphorbia glabrata Sw. -- not accepted
  Euphorbia hamata (Haw.) Sweet -- accepted
  Euphorbia juncoides (Haw.) Sweet -- not accepted
  Euphorbia lamarckii Sweet -- accepted
  Euphorbia melanohydrata ssp. conica Swanepoel -- accepted
  Euphorbia otjingandu Swanepoel -- accepted
  Euphorbia punicea Sw. -- accepted
  Euphorbia repanda (Haw.) Sweet -- accepted
  Euphorbia rigens Sweet -- not accepted
  Euphorbia silenifolia (Haw.) Sweet -- accepted
  Euphorbiodendron puniceum (Sw.) Millsp. -- not accepted
  Eustachys petraea (Sw.) Desv. -- accepted -- pinewoods fingergrass
  Evolvulus sericeus Sw. -- accepted -- silky evolvulus, silver dwarf morning-glory, silver dwarf morningglory
  Evolvulus sericeus var. sericeus Sw. -- accepted -- silver dwarf morning-glory, silver dwarf-morning-glory
  Fadyenia hookeri (Sweet) Maxon -- accepted -- dotted fern
  Fagus americana Sweet -- not accepted
  Feronia limonia (L.) Swingle -- not accepted
  Festuca breviglumis Swallen -- accepted
  Festuca chiriquensis Swallen -- accepted
  Festuca ligulata Swallen -- accepted -- Guadalupe fescue
  Festuca panda Swallen -- accepted
  Festuca parciflora Swallen -- accepted
  Festuca parciflora ssp. parciflora Swallen -- accepted
  Festuca pinetorum Swallen -- accepted
  Festuca reclinata Swallen -- accepted
  Fissidens viridulus (Sw.) Wahlenb. -- not accepted
  Fortunella Swingle -- accepted -- kumquat
  Fortunella hindsii (Champ. ex Benth.) Swingle -- accepted -- Hong Kong kumquat
  Fortunella japonica (Thunb.) Swingle -- accepted -- round kumquat
  Fortunella margarita (Lour.) Swingle -- accepted -- oval kumquat
  Fortunella X crassifolia Swingle -- accepted -- Meiwa kumquat
  Frangula purshiana ssp. annonifolia (Greene) Sawyer & S.W. Edwards -- not accepted -- Cascara buckthorn, Pursh's buckthorn
  Frangula purshiana ssp. ultramafica Sawyer & S.W. Edwards -- not accepted -- Cascara buckthorn, Pursh's buckthorn
  Frangula sphaerosperma (Sw.) Kartesz & Gandhi -- not accepted -- West Indian buckthorn
  Geranium nepalense Sweet -- accepted
  Gesneria calycina Sw. -- accepted
  Gesneria corymbosa Sw. -- not accepted
  Gesneria craniolaria Sw. -- not accepted
  Gesneria exserta Sw. -- accepted
  Gesneria grandis Sw. -- not accepted
  Gesneria pumila Sw. -- accepted
  Gesneria pumila ssp. pumila Sw. -- accepted
  Gesneria scabra Sw. -- accepted
  Gesneria scabra var. scabra Sw. -- accepted
  Gesneria ventricosa Sw. -- accepted
  Gesneria ventricosa ssp. ventricosa Sw. -- accepted
  Ghinia spinosa (Sw.) Britton & P. Wilson -- not accepted
  Gilia inconspicua (Sm.) Sweet -- accepted -- shy gilia, shy gily-flower
  Gladiolus X colvillei Sweet -- accepted -- Colville's gladiolus
  Glandularia pulchella (Sweet) Tronc. -- accepted -- South American mock vervain
  Gloxinia calycina (Sw.) hort. ex Steud. -- not accepted
  Glyceria cookei Swallen -- not accepted
  Glycine phaseoloides Sw. -- not accepted
  Glycine reticulata Sw. -- not accepted
  Goniophlebium triseriale (Sw.) Wherry -- not accepted
  Goniopteris tetragona (Sw.) C. Presl -- not accepted
  Gonolobus baldwynianus Sweet -- not accepted
  Gouinia barbata (Hack.) Swallen -- accepted
  Gouinia brasiliensis (S. Moore) Swallen -- accepted
  Gouinia cearensis (Ekman) Swallen -- accepted
  Gouinia gracilis Ekman ex Swallen -- accepted
  Gouinia guatemalensis (Hack.) Swallen -- not accepted
  Gouinia longiramea Swallen -- not accepted
  Gouinia papillosa Swallen -- accepted
  Gouinia paraguayensis var. tortuosa (Swallen) Türpe -- accepted
  Gouinia ramosa Swallen -- not accepted
  Gouinia tortuosa Swallen -- not accepted
  Govenia utriculata (Sw.) Lindl. -- accepted -- tropical govenia
  Grammitis Sw. -- accepted -- dwarf polypody
  Grammitis myosuroides (Sw.) Sw. -- not accepted
  Grammitis serrulata (Sw.) Sw. -- not accepted
  Grammitis trichomanoides (Sw.) Ching -- accepted -- Antilles dwarf polypody
  Gratiola repens Sw. -- not accepted
  Grimmia alpicola Sw. ex Hedw. -- not accepted
  Grimmia alpicola var. alpicola Sw. ex Hedw. -- not accepted
  Guadua spinosa (Swallen) McClure -- not accepted
  Guettarda elliptica Sw. -- accepted -- elliptic-leaf velvetseed, hammock velvetseed
  Gyminda latifolia (Sw.) Urb. -- accepted -- falsebox, West Indian false box
  Gymmanthes Sw. -- not accepted
  Gymmanthes lucida Sw. -- not accepted
  Gymnanthes Sw. -- accepted
  Gymnanthes lucida Sw. -- accepted -- oysterwood
  Gymnocalycium buenekeri (Buining) Swales -- not accepted
  Gymnocalycium horstii ssp. buenekeri (Swales) P.J. Braun & Hofacker -- accepted
  Gymnopogon floridanus Swallen -- not accepted
  Gymnotrix polystachya (L.) Sw. ex Trin. -- not accepted
  Habenaria monorrhiza (Sw.) Rchb. f. -- accepted -- Habenaria de caminos, tropical bog orchid
  Habenaria quinqueseta (Michx.) Sw. -- not accepted -- longhorn bog orchid, longhorn false reinorchid
  Habranthus robustus Herb. ex Sweet -- accepted -- Brazilian copperlily
  Hamamelis ovalis S.W. Leonard -- accepted
  Hamelia axillaris Sw. -- accepted -- balsamillo
  Harrisella filiformis (Sw.) Cogn. -- not accepted -- needleroot airplant orchid
  Hedwigia balsamifera Sw. -- not accepted
  Hedyosmum Sw. -- accepted
  Hedyosmum arborescens Sw. -- accepted -- cigarbush
  Heliopsis helianthoides (L.) Sweet -- accepted -- heliopsis sunflower, oxeye, smooth oxeye, sunflower heliopsis
  Heliopsis helianthoides var. helianthoides (L.) Sweet -- accepted -- smooth oxeye
  Heliotropium inundatum Sw. -- not accepted
  Heliotropium microphyllum Sw. ex Wikstr. -- accepted -- littleleaf heliotrope
  Helleriella punctulata (Rchb. f.) Garay & H.R. Sweet -- not accepted -- dotted orchid
  Helosis cayennensis (Sw.) Spreng. -- accepted
  Henckelia meeboldii (W.W. Sm. & Ramaswami) A. Weber & B.L. Burtt -- accepted
  Henriettea fascicularis (Sw.) M. Gómez -- accepted -- camasey peludo
  Henriettella fascicularis (Sw.) C. Wright ex Sauvalle -- not accepted
  Henriettella fascilularis (Sw.) C. Wright -- not accepted
  Heppiella corymbosa (Sw.) Urb. -- not accepted
  Herbertia Sweet -- accepted -- herbertia
  Hesperochloa kingii var. rabiosa (Piper) Swallen -- not accepted
  Heteranthera limosa (Sw.) Willd. -- accepted -- blue mudplantain, ducksalad, mud plantain
  Hibiscus elatus Sw. -- accepted -- mahoe
  Hibiscus moscheutos var. purpurascens Sweet -- not accepted
  Hibiscus pilosus auct. non (Sw.) Fawc. & Rendle -- not accepted
  Hierochloe alpina (Sw. ex Willd.) Roem. & Schult. -- not accepted -- alpine sweetgrass
  Hierochloe alpina f. alpina (Sw. ex Willd.) Roem. & Schult. -- not accepted
  Hierochloe alpina ssp. alpina (Sw. ex Willd.) Roem. & Schult. -- not accepted -- alpine sweetgrass
  Hierochloe alpina var. alpina (Sw. ex Willd.) Roem. & Schult. -- not accepted
  Hiraea faginea (Sw.) Nied. -- accepted
  Hirtella triandra Sw. -- accepted -- pigeonberry
  Hirtella triandra ssp. triandra Sw. -- accepted -- pigeonberry
  Holcus alpinus Sw. ex Willd. -- not accepted
  Holcus saccharoides (Sw.) Kuntze ex Stuck. -- not accepted
  Homalocenchrus hexandrus (Sw.) Kuntze -- not accepted
  Homalocenchrus monandrus (Sw.) Kuntze -- not accepted
  Homolepis glutinosa (Sw.) Zuloaga & Soderstr. -- accepted
  Hoodia Sweet -- accepted
  Hoodia gordonii (Masson) Sweet ex Decne. -- accepted
  Hufelandia pendula (Sw.) Nees -- not accepted
  Hunnemannia Sweet -- accepted
  Hunnemannia fumariifolia Sweet -- accepted -- Mexican tulip poppy
  Huperzia acerosa (Sw.) Holub -- accepted -- Puerto Rico clubmoss
  Huperzia filiformis (Sw.) Holub -- accepted -- stringleaf clubmoss
  Huperzia taxifolia (Sw.) Trevis. -- accepted -- yewleaf clubmoss
  Hyalolepidozia S.W. Arnell ex Grolle -- accepted
  Hydrocotyle hirsuta Sw. -- accepted -- yerba de clavo
  Hygrohypnum smithii (Sw. in Lilj.) Broth. -- accepted -- Smith's hygrohypnum moss
  Hylotelephium sieboldii (Sweet ex Hook.) H. Ohba -- accepted
  Hymenophyllum asplenioides Sw. -- accepted -- Caribbean filmy fern
  Hymenophyllum axillare Sw. -- accepted -- axillary filmy fern
  Hymenophyllum ciliatum (Sw.) Sw. -- not accepted
  Hymenophyllum decurrens (Jacq.) Sw. -- accepted -- Sierra de Luquillo filmy fern
  Hymenophyllum fucoides (Sw.) Sw. -- accepted -- graceful filmy fern
  Hymenophyllum hirsutum (L.) Sw. -- accepted -- hairy filmy fern
  Hymenophyllum lineare (Sw.) Sw. -- accepted -- longtom filmy fern
  Hymenophyllum polyanthos (Sw.) Sw. -- accepted -- smooth filmy fern
  Hymenophyllum sericeum (Sw.) Sw. -- accepted
  Hymenophyllum undulatum (Sw.) Sw. -- accepted -- wavy filmy fern
  Hypelate trifoliata Sw. -- accepted -- inkwood
  Ibidium tortile (Sw.) House -- not accepted
  Ichnanthus acuminatus Swallen -- not accepted
  Ichnanthus altus Swallen -- not accepted
  Ichnanthus amplifolius Swallen -- not accepted
  Ichnanthus amplus Swallen -- not accepted
  Ichnanthus angustifolius Swallen -- not accepted
  Ichnanthus angustus Swallen -- not accepted
  Ichnanthus auriculatus Swallen -- not accepted
  Ichnanthus bacularius Swallen -- not accepted
  Ichnanthus brevivaginatus Swallen -- not accepted
  Ichnanthus camporum Swallen -- accepted
  Ichnanthus chaseae Swallen -- not accepted
  Ichnanthus congestus Swallen -- not accepted
  Ichnanthus duidensis Swallen -- not accepted
  Ichnanthus erectus Swallen -- not accepted
  Ichnanthus firmus Swallen -- not accepted
  Ichnanthus glaberrimus Swallen -- not accepted
  Ichnanthus goiasensis Swallen -- not accepted
  Ichnanthus gracilis Swallen -- not accepted
  Ichnanthus hispidus Swallen -- not accepted
  Ichnanthus indutus Swallen -- not accepted
  Ichnanthus lagotis (Trin.) Swallen -- not accepted
  Ichnanthus longifolius Swallen -- not accepted
  Ichnanthus longispiculus Swallen -- not accepted
  Ichnanthus neblinaensis Swallen -- not accepted
  Ichnanthus nemorosus (Sw.) Döll -- accepted -- creeping bedgrass
  Ichnanthus nemorosus var. nemorosus (Sw.) Döll -- not accepted
  Ichnanthus nervosus Swallen -- not accepted
  Ichnanthus nubigenus Swallen -- not accepted
  Ichnanthus pallens (Sw.) Munro ex Benth. -- accepted -- caruzo
  Ichnanthus pallens var. pallens (Sw.) Munro ex Benth. -- accepted -- caruzo
  Ichnanthus pallidus Swallen -- not accepted
  Ichnanthus procurrens (Nees ex Trin.) Swallen -- accepted
  Ichnanthus procurrens var. procurrens (Nees ex Trin.) Swallen -- accepted
  Ichnanthus pubescens Swallen -- not accepted
  Ichnanthus reclinatus Swallen -- not accepted
  Ichnanthus reclivis Swallen -- not accepted
  Ichnanthus riparius Swallen -- not accepted
  Ichnanthus scaberrimus Swallen -- not accepted
  Ichnanthus serratus Swallen -- not accepted
  Ichnanthus silvestris Swallen -- not accepted
  Ichnanthus subinclusus Swallen -- not accepted
  Ichnanthus tectus Swallen -- accepted
  Ichnanthus vestitus Swallen -- not accepted
  Ichnanthus villosissimus Swallen -- not accepted
  Ichnanthus villosus Swallen -- not accepted
  Ichnanthus vimineus Swallen -- not accepted
  Ilex obcordata Sw. -- accepted -- Sintenis' holly
  Ilex sideroxyloides (Sw.) Griseb. -- accepted -- gongolin, ti citron montaigne
  Ilex sideroxyloides ssp. sideroxyloides (Sw.) Griseb. -- accepted -- gongolin
  Ilex sideroxyloides var. sideroxyloides (Sw.) Griseb. -- not accepted -- gongolin
  Imperata flexuosa Swallen -- not accepted
  Inga laurina (Sw.) Willd. -- accepted -- sacky sac bean
  Ionopsis satyrioides (Sw.) Rchb. f. -- accepted -- fleshyleaf violet orchid, Ionopsis carnosa
  Ionopsis satyroides (Sw.) Rchb. f. -- not accepted
  Ionopsis utricularioides (Sw.) Lindl. -- accepted -- delicate violet orchid, Ionopsis delicado
  Ipomoea barbigera Sweet -- not accepted
  Ipomoea brasiliensis (L.) Sweet -- not accepted
  Ipomoea cairica (L.) Sweet -- accepted -- mile a minute vine, mile-a-minute vine
  Ipomoea fastigiata (Roxb.) Sweet -- not accepted
  Isachne arundinacea (Sw.) Griseb. -- accepted
  Isachne ligulata Swallen -- accepted
  Isachne pubescens Swallen -- accepted
  Isachne rigens (Sw.) Trin. -- accepted
  Isopterygium micans (Sw.) Kindb. -- not accepted
  Isopterygium piliferum (Sw. ex Hartm.) Loeske -- not accepted
  Isopterygium tenerum (Sw.) Mitt. -- accepted -- isopterygium moss
  Jacquiniella teretifolia (Sw.) Britton & P. Wilson -- accepted -- Jacquiniella carnosa, moss tufted orchid
  Jarava plumosa (Spreng.) S.W.L. Jacobs & J. Everett -- accepted -- South American rice grass
  Jungermannia biloba Sw. -- not accepted
  Jungermannia tomentosa Hoffm. [non Sw.] -- not accepted
  Koanophyllon villosum (Sw.) R.M. King & H. Rob. -- accepted -- Florida Keys thoroughwort
  Lablab purpureus (L.) Sweet -- accepted -- hyacinthbean
  Lagetta lagetto (Sw.) Nash -- accepted -- lacebark
  Lasiacis acuminata Swallen -- not accepted
  Lasiacis compacta (Sw. ex Wikstr.) Hitchc. -- not accepted
  Lasiacis glabra Swallen -- not accepted
  Lasiacis lancifolia Swallen -- not accepted
  Lasiacis linearis Swallen -- accepted
  Lasiacis longiligula Swallen -- not accepted
  Lasiacis lucida Swallen -- not accepted
  Lasiacis maxonii Swallen -- not accepted
  Lasiacis oaxacensis var. maxonii (Swallen) Davidse -- accepted
  Lasiacis papillosa Swallen -- not accepted
  Lasiacis ruscifolia var. velutina (Swallen) Davidse -- accepted
  Lasiacis velutina Swallen -- not accepted
  Lastreopsis effusa (Sw.) Tindale -- accepted -- false shieldfern
  Laugeria lucida Sw. -- not accepted
  Lauro-cerasus occidentalis (Sw.) M. Roem. -- not accepted
  Laurocerasus occidentalis (Sw.) M. Roem. -- not accepted
  Laurus coriacea Sw. -- not accepted
  Leersia Sw. -- accepted -- cutgrass
  Leersia hexandra Sw. -- accepted -- southern cutgrass
  Leersia monandra Sw. -- accepted -- bunch cutgrass
  Leersia oryzoides (L.) Sw. -- accepted -- rice cut grass, rice cutgrass
  Leersia oryzoides var. oryzoides (L.) Sw. -- accepted
  Leiandra cordifolia (Sw.) Raf. -- not accepted
  Leiophyllum lyonii Sweet -- not accepted
  Lejeunea flava (Sw.) Nees -- accepted
  Lellingeria myosuroides (Sw.) A.R. Sm. & R.C. Moran -- accepted -- mouseear lellingeria
  Leochilus labiatus (Sw.) Kuntze -- accepted -- green smoothlip orchid, Leochilus de labio, lipped orchid
  Lepanthes Sw. -- accepted -- babyboot orchid
  Leptochilus alienus (Sw.) C. Chr. -- not accepted
  Leptochilus nicotianifolius (Sw.) C. Chr. -- not accepted
  Leptoloma arenicola Swallen -- not accepted
  Leptoloma cognata var. arenicola (Swallen) Gould -- not accepted
  Leptoloma cognatum var. arenicola (Swallen) Gould -- not accepted
  Leptospermum obovatum Sweet -- accepted
  Licaria salicifolia (Sw.) Kosterm. -- not accepted
  Licaria triandra (Sw.) Kosterm. -- accepted -- Florida licaria, pepperleaf sweetwood
  Limprichtia revolvens (Sw.) Loeske -- accepted -- limprichtia moss
  Lindsaea ensifolia Sw. -- accepted -- graceful necklace fern
  Lindsaea stricta (Sw.) Dryand. -- accepted -- smallstalk necklace fern
  Linociera Sw. ex Schreb. -- not accepted
  Linociera ligustrina Sw. -- not accepted
  Linociera lingustrina (Sw.) Sw. -- not accepted
  Listera convallarioides (Sw.) Nutt. ex Elliott -- not accepted -- broad-lip twayblade, broadleaf twayblade, broadlipped listera, broadlipped twayblade
  Lithachne pauciflora (Sw.) P. Beauv. -- accepted -- diente de perro
  Lithophila Sw. -- accepted
  Lithophila muscoides Sw. -- accepted -- talustuft
  Lobelia X speciosa Sweet (pro sp.) -- accepted -- lobelia
  Lobelia X speciosa var. speciosa Sweet -- not accepted -- lobelia
  Lorenzochloa erectifolia (Swallen) Reeder & C. Reeder -- not accepted
  Luculia Sweet -- accepted
  Lupinus mutabilis Sweet -- accepted -- tarwi
  Luziola brasiliensis (Trin.) Swallen -- not accepted
  Luziola caespitosa Swallen -- accepted
  Luziola divergens Swallen -- accepted
  Luziola fragilis Swallen -- accepted
  Luziola subintegra Swallen -- accepted
  Luzula arcuata (Wahlenb.) Sw. -- accepted -- curved woodrush
  Luzula arcuata ssp. arcuata (Wahlenb.) Sw. -- accepted -- curved woodrush
  Luzula pallescens Sw. -- accepted
  Lycopodiella cernua var. curvata (Sw.) Kartesz & Gandhi -- not accepted -- staghorn clubmoss
  Lycopodium acerosum Sw. -- not accepted
  Lycopodium cernuum var. curvatum (Sw.) Hook. & Grev. -- not accepted
  Lycopodium curvatum Sw. -- not accepted
  Lycopodium filiforme Sw. -- not accepted
  Lycopodium reflexum (P. Beauv.) Sw. -- not accepted
  Lycopodium taxifolium Sw. -- not accepted
  Lygodium Sw. -- accepted -- climbing ferns
  Lygodium flexuosum (L.) Sw. -- accepted -- maidenhair creeper
  Lygodium japonicum (Thunb.) Sw. -- accepted -- Japanese climbing fern
  Lygodium palmatum (Bernh.) Sw. -- accepted -- American climbing fern
  Lygodium venustum Sw. -- accepted -- monarch climbing fern
  Lygodium volubile Sw. -- accepted
  Machaerina restioides (Sw.) Vahl -- accepted -- forest twigrush
  Macuillamia repens (Sw.) Pennell -- not accepted
  Malaxis Sol. ex Sw. -- accepted -- adder's-mouth orchid, addersmouth orchid
  Malaxis monophyllos (L.) Sw. -- accepted
  Malaxis monophyllos var. monophyllos (L.) Sw. -- accepted -- Aleutian adder's-mouth orchid
  Malaxis paludosa (L.) Sw. -- accepted -- bog adder's-mouth orchid
  Malaxis spicata Sw. -- accepted -- Florida adder's-mouth orchid
  Mammillaria missouriensis Sweet -- not accepted
  Manihot digitata Sweet -- accepted
  Manisuris granularis (L.) Sw. -- not accepted
  Marattia Sw. -- accepted -- potato fern
  Marattia alata Sw. -- accepted
  Margaritopsis nutans (Sw.) C.M. Taylor -- accepted
  Marila Sw. -- accepted
  Mariscus capillaris (Sw.) Vahl -- not accepted
  Mariscus confertus (Sw.) C.B. Clarke -- not accepted
  Mariscus restioides (Sw.) Kuntze -- not accepted
  Matelea baldwyniana (Sweet) Woodson -- accepted -- Baldwin's milkvine
  Matricaria prostrata Sw. -- not accepted
  Matthiola incana var. annua (Sweet) Voss -- not accepted -- tenweeks stock
  Maxillaria palmifolia (Sw.) Lindl. -- accepted -- goatmouth orchid
  Maxillaria sessilis (Sw.) Fawc. & Rendle -- not accepted
  Maxonia apiifolia (Sw.) C. Chr. -- accepted -- climbing woodfern
  Maxonia apiifolia var. apiifolia (Sw.) C. Chr. -- accepted
  Mecardonia dianthera (Sw.) Pennell -- not accepted
  Megathyrsus (Pilg.) B.K. Simon & S.W.L. Jacobs -- accepted
  Megathyrsus maximus (Jacq.) B.K. Simon & S.W.L. Jacobs -- accepted
  Meibomia adscendens (Sw.) Kuntze -- not accepted
  Meibomia axillaris (Sw.) Kuntze -- not accepted
  Meibomia scorpiurus (Sw.) Kuntze -- not accepted
  Meibomia spiralis (Sw.) Kuntze -- not accepted
  Meibomia tortuosa (Sw.) Kuntze -- not accepted
  Melampodium humile Sw. -- not accepted
  Melampodium ruderale Sw. -- not accepted
  Melastoma fasciculare Sw. -- not accepted
  Melastoma impetiolare Sw. -- not accepted
  Melastoma prasinum Sw. -- not accepted
  Melastoma strigillosum Sw. -- not accepted
  Melastoma tetrandrum Sw. -- not accepted
  Melochia nodiflora Sw. -- accepted -- bretonica prieta
  Meniscium reticulatum (L.) Sw. -- not accepted
  Merostachys pauciflora Swallen -- accepted
  Mesosetum acuminatum Swallen -- not accepted
  Mesosetum aequiglume Swallen -- not accepted
  Mesosetum altum Swallen -- not accepted
  Mesosetum angustifolium (Swallen) Swallen -- not accepted
  Mesosetum annuum Swallen -- accepted
  Mesosetum arenarium Swallen -- accepted
  Mesosetum blakei Swallen -- accepted
  Mesosetum caudiculatum (Hack.) Swallen -- not accepted
  Mesosetum comatum Swallen -- accepted
  Mesosetum compressum Swallen -- accepted
  Mesosetum curtifolium Swallen -- not accepted
  Mesosetum elegans Swallen -- not accepted
  Mesosetum elytrochaetum (Hack.) Swallen -- accepted
  Mesosetum latifolium Swallen -- not accepted
  Mesosetum longifolium Swallen -- not accepted
  Mesosetum molle Swallen -- not accepted
  Mesosetum multicaule Swallen -- not accepted
  Mesosetum pubescens Swallen -- not accepted
  Mesosetum stoloniferum Swallen -- accepted
  Mesosetum tenuifolium Swallen -- not accepted
  Metastelma parviflorum (Sw.) R. Br. ex Schult. -- accepted
  Metzgeria linearis sensu Lindb. [non (Sw.) Austin] -- not accepted
  Miconia impetiolaris (Sw.) D. Don ex DC. -- accepted -- camasey de costilla
  Miconia impetionlaris (Sw.) D. Don ex DC. -- not accepted
  Miconia prasina (Sw.) DC. -- accepted -- granadillo bobo
  Miconia splendens (Sw.) Griseb. -- accepted -- white-flower johnnyberry
  Miconia tetrandra (Sw.) D. Don -- accepted -- rajador
  Microcitrus Swingle -- accepted
  Microcitrus australasica (F. Muell.) Swingle -- accepted -- Australian finger lime
  Microcitrus australis (Planch.) Swingle -- accepted -- Australian round lime
  Micromeria brownei (Sw.) Benth. -- not accepted -- Browne's savory
  Micropyxis pumila (Sw.) Duby -- not accepted
  Microschizaea pennula (Sw.) C.F. Reed -- not accepted
  Microtea Sw. -- accepted -- jumby pepper
  Microtea debilis Sw. -- accepted -- weak jumby pepper
  Milium compressum Sw. -- not accepted
  Milium digitatum Sw. -- not accepted
  Milium nemorosum (Sw.) Moench -- not accepted
  Milium paniceum Sw. -- not accepted
  Milium villosum Sw. -- not accepted
  Millium villosum Sw. -- not accepted
  Minuartia stricta (Sw.) Hiern -- accepted -- bog stitchwort
  Misanteca triandra (Sw.) Mez -- not accepted
  Mitracarpus villosus (Sw.) Cham. & Schltdl. ex DC. -- not accepted
  Mohria Sw. -- not accepted
  Muehlenbergia annua (Vasey) Swallen -- not accepted
  Muehlenbergia ramulosa (Kunth) Swallen -- not accepted
  Muhlenbergia angustifolia Swallen -- not accepted
  Muhlenbergia annua (Vasey) Swallen -- accepted
  Muhlenbergia attenuata Swallen -- not accepted
  Muhlenbergia aurea Swallen -- accepted
  Muhlenbergia breviculmis Swallen -- not accepted
  Muhlenbergia brevivaginata Swallen -- accepted
  Muhlenbergia calcicola Swallen -- not accepted
  Muhlenbergia confusa (E. Fourn.) Swallen -- not accepted
  Muhlenbergia curvula Swallen -- not accepted
  Muhlenbergia decumbens Swallen -- accepted
  Muhlenbergia distans Swallen -- accepted
  Muhlenbergia erectifolia Swallen -- not accepted
  Muhlenbergia eriophylla Swallen -- accepted
  Muhlenbergia fragilis Swallen -- accepted -- annual muhly, delicate muhly
  Muhlenbergia hintonii Swallen -- accepted
  Muhlenbergia jaliscana Swallen -- accepted
  Muhlenbergia lucida Swallen -- accepted
  Muhlenbergia minutissima (Steud.) Swallen -- accepted -- annual muhly
  Muhlenbergia orophila Swallen -- accepted
  Muhlenbergia pubigluma Swallen -- accepted
  Muhlenbergia ramulosa (Kunth) Swallen -- accepted -- green muhly, muhly
  Muhlenbergia shepherdii (Vasey) Swallen -- accepted
  Muhlenbergia sinuosa Swallen -- accepted -- marshland muhly
  Muhlenbergia subaristata Swallen -- accepted
  Muhlenbergia vaginata Swallen -- accepted
  Muhlenbergia versicolor Swallen -- accepted
  Muhlenbergia villiflora var. villosa (Swallen) Morden -- accepted -- hairy muhly
  Muhlenbergia villosa Swallen -- not accepted -- hairy muhly
  Muhlenbergia X involuta Swallen (pro sp.) -- accepted -- canyon muhly, involuta muhly
  Myginda latifolia Sw. -- not accepted
  Myrcia splendens (Sw.) DC. -- accepted -- punchberry, spike milfoil
  Myrcianthes fragrans (Sw.) McVaugh -- accepted -- twinberry, twinberry stopper
  Myrcianthes fragrans var. fragrans (Sw.) McVaugh -- not accepted
  Myriocladus Swallen -- accepted
  Myriocladus affinis Swallen -- not accepted
  Myriocladus cardonae Swallen -- accepted
  Myriocladus churunensis Swallen -- accepted
  Myriocladus confertus Swallen -- not accepted
  Myriocladus distantiflorus Swallen -- accepted
  Myriocladus exsertus Swallen -- accepted
  Myriocladus gracilis Swallen -- not accepted
  Myriocladus grandifolius Swallen -- accepted
  Myriocladus longiramosus Swallen -- accepted
  Myriocladus maguirei Swallen -- not accepted
  Myriocladus neblinaensis Swallen -- accepted
  Myriocladus paludicola Swallen -- accepted
  Myriocladus paraquensis Swallen -- not accepted
  Myriocladus paruensis Swallen -- not accepted
  Myriocladus purpureus Swallen -- not accepted
  Myriocladus simplex Swallen -- accepted
  Myriocladus steyermarkii Swallen -- accepted
  Myriocladus variabilis Swallen -- not accepted
  Myriocladus virgatus Swallen -- accepted
  Myriocladus wurdackii Swallen -- not accepted
  Myrodia turbinata Sw. -- not accepted
  Myrsine coriacea (Sw.) R. Br. ex Roem. & Schult. -- accepted -- leathery colicwood
  Myrtus axillaris Sw. -- not accepted
  Myrtus cordata Sw. -- not accepted
  Myrtus glabrata Sw. -- not accepted
  Myrtus ligustrina Sw. -- not accepted
  Myrtus monticola Sw. -- not accepted
  Myrtus procera Sw. -- not accepted
  Myrtus splendens Sw. -- not accepted
  Nectandra coriacea (Sw.) Griseb. -- accepted -- Florida nectandra, lancewood
  Nectandra membranacea (Sw.) Griseb. -- accepted -- sweetwood
  Nectandra patens (Sw.) Griseb. -- accepted -- capberry
  Neobesseya missouriensis (Sweet) Britton & Rose -- not accepted
  Neottia convallarioides (Sw.) Rich. -- accepted -- broadleaf twayblade, broadlipped listera, broadlipped twayblade
  Nephrolepis biserrata (Sw.) Schott -- accepted -- giant swordfern
  Nephrolepis davallioides (Sw.) Kunze -- accepted
  Nephrolepis undulata (Afzel. ex Sw.) J. Sm. -- accepted -- annual swordfern
  Neurolepis angusta Swallen -- not accepted
  Neurolepis densiflora Swallen -- not accepted
  Neurolepis glomerata Swallen -- not accepted
  Neurolepis mollis Swallen -- not accepted
  Neurolepis nigra Swallen -- not accepted
  Nicropyxis pumila (Sw.) Duby -- not accepted
  Nintooa japonica (Thunb.) Sweet -- not accepted
  Nonea versicolor (Stev.) Sweet -- accepted
  Notholaena sinuata (Lag. ex Sw.) Kaulf. -- not accepted
  Notopleura uliginosa (Sw.) Bremek. -- accepted
  Ocellochloa chapadensis (Swallen) Zuloaga & Morrone -- accepted
  Ocellochloa irregularis (Swallen) Zuloaga & Morrone -- accepted
  Ocellochloa piauiensis (Swallen) Zuloaga & Morrone -- accepted
  Ochellochloa chapadensis (Swallen) Zuloaga & Morrone -- not accepted
  Ochellochloa irregularis (Swallen) Zuloaga & Morrone -- not accepted
  Ochellochloa piauiensis (Swallen) Zuloaga & Morrone -- not accepted
  Ochroma Sw. -- accepted
  Ochroma lagopus Sw. -- not accepted
  Ocotea coriacea (Sw.) Britton -- not accepted -- lancewood
  Ocotea floribunda (Sw.) Mez -- accepted -- laurel espada
  Ocotea leucoxylon (Sw.) Laness. -- accepted -- loblolly sweetwood
  Ocotea membranacea (Sw.) R.A. Howard -- not accepted -- sweetwood
  Ocotea patens (Sw.) Nees -- not accepted -- capberry
  Octadesmia montana (Sw.) Benth. -- not accepted
  Odontoschisma prostratum (Sw.) Trev. -- accepted
  Odontostephana baldwyniana (Sweet) Alexander -- not accepted
  Oenothera kleinii W.L. Wagner & S.W. Mill. -- not accepted -- Klein's evening-primrose, Wolf Creek evening-primrose
  Oenothera nuttallii Sweet -- accepted -- Nuttall's evening primrose, Nuttall's evening-primrose
  Oleandra articulata (Sw.) C. Presl -- accepted -- oleander fern
  Olyra maranonensis Swallen -- accepted
  Olyra paniculata Sw. -- not accepted
  Olyra pauciflora Sw. -- not accepted
  Olyra taquara Swallen -- accepted
  Olyra wurdackii Swallen -- accepted
  Oncidium Sw. -- accepted -- dancing-lady orchid
  Oncidium altissimum (Jacq.) Sw. -- accepted -- Wydler's dancing-lady orchid
  Oncidium carthagenense (Jacq.) Sw. -- not accepted -- Coot Bay dancing-lady
  Oncidium carthaginense (Jacq.) Sw. -- not accepted -- Coot Bay dancing-lady orchid
  Oncidium cebolleta (Jacq.) Sw. -- accepted -- Oncidium cuerno-de-cabra, queen orchid
  Oncidium undulatum (Sw.) Salisb. -- not accepted -- Cape Sable orchid
  Oncidium variegatum (Sw.) Sw. -- not accepted -- harlequin dancinglady orchid
  Ophrys convallarioides (Sw.) W. Wight -- not accepted
  Opuntia triacantha (Willd.) Sweet -- accepted -- Spanish lady
  Orcuttia fragilis Swallen -- not accepted
  Origanum vulgare ssp. gracile (K. Koch) Ietsw. -- accepted
  Ortachne erectifolia (Swallen) Clayton -- accepted
  Orthopappus angustifolius (Sw.) Gleason -- not accepted
  Orthotrichum pumilum Sw. -- accepted -- orthotrichum moss
  Oryza alta Swallen -- not accepted
  Oryza hexandra (Sw.) Döll -- not accepted
  Oryza hexandra var. hexandra (Sw.) Döll -- not accepted
  Oryza monandra (Sw.) Döll -- not accepted
  Oryza monandra var. monandra (Sw.) Döll -- not accepted
  Otachyrium succisum (Swallen) Send. & Soderstr. -- accepted
  Oxandra lanceolata (Sw.) Baill. -- accepted -- blacklancewood
  Oxandra laurifolia (Sw.) A. Rich. -- accepted -- haya
  Oxybaphus albidus (Walter) Sweet -- not accepted
  Oxybaphus angustifolius Sweet -- not accepted
  Oxybaphus decumbens (Nutt.) Sweet -- not accepted
  Oxybaphus hirsutus (Pursh) Sweet -- not accepted
  Oxybaphus nyctagineus (Michx.) Sweet -- not accepted
  Pachira insignis (Sw.) Sw. ex Savigny -- accepted -- wild chestnut
  Palicourea alpina (Sw.) DC. -- accepted -- tafetan
  Palicourea crocea (Sw.) Schult. -- accepted -- red cappel
  Panax attenuatus Sw. -- not accepted
  Panicum abscissum Swallen -- not accepted -- cutthroat grass
  Panicum acuminatum Sw. -- not accepted
  Panicum acuminatum var. acuminatum Sw. -- not accepted
  Panicum aequivaginatum Swallen -- not accepted
  Panicum albicomum Swallen & García-Barr. -- not accepted
  Panicum albociliatum Swallen -- not accepted
  Panicum albospiculatum Swallen -- not accepted
  Panicum alcobense Swallen -- not accepted
  Panicum alsophilum Swallen -- not accepted
  Panicum angulosum Swallen -- not accepted
  Panicum appressifolium Swallen -- not accepted
  Panicum apricum Swallen -- not accepted
  Panicum arctum Swallen -- accepted
  Panicum arundinaceum Sw. -- not accepted
  Panicum auyanense Swallen -- not accepted
  Panicum bartlettii Swallen -- accepted
  Panicum blackii Swallen -- not accepted
  Panicum blakei Swallen -- not accepted
  Panicum breviramosum Swallen -- not accepted
  Panicum caespitosum Sw. -- not accepted
  Panicum carthaginense Sw. -- not accepted
  Panicum cayoense Swallen -- accepted
  Panicum chapadense Swallen -- not accepted
  Panicum chartaginense Sw. -- not accepted
  Panicum churunense Swallen -- not accepted
  Panicum compactum Sw. ex Wikstr. -- not accepted
  Panicum cowanii Swallen -- not accepted
  Panicum curvifolium Swallen -- not accepted
  Panicum deciduum Swallen -- accepted
  Panicum decumbens (Sw.) Roem. & Schult. -- not accepted
  Panicum densifolium Swallen -- not accepted
  Panicum dichotomum var. acuminatum (Sw.) Griseb. -- not accepted
  Panicum diffusum Sw. -- accepted -- West Indian panicgrass
  Panicum distichum var. pilosum (Sw.) Griseb. -- not accepted
  Panicum egleri Swallen -- not accepted
  Panicum fasciculatum Sw. -- not accepted -- browntop signalgrass
  Panicum fasciculatum var. chartaginense (Sw.) Döll -- not accepted
  Panicum fasciculatum var. flavescens (Sw.) Döll -- not accepted
  Panicum fasciculatum var. fuscum (Sw.) Döll -- not accepted
  Panicum flavescens Sw. -- not accepted
  Panicum fontanale Swallen -- not accepted
  Panicum fonticola Swallen -- accepted
  Panicum froesii Swallen -- not accepted
  Panicum furtivum Swallen -- not accepted
  Panicum furvum Swallen -- accepted
  Panicum fuscum Sw. -- not accepted
  Panicum fuscum var. fasciculatum (Sw.) Griseb. -- not accepted
  Panicum fuscum var. fuscum Sw. -- not accepted
  Panicum glutinosum Sw. -- not accepted -- sticky panicgrass
  Panicum goeldii Swallen -- not accepted
  Panicum gracilissimum Swallen -- not accepted
  Panicum graniticum Swallen -- not accepted
  Panicum guatemalense Swallen -- accepted
  Panicum heterophyllum Sw. ex Wikstr. -- not accepted
  Panicum hintonii Swallen -- not accepted
  Panicum hirstii Swallen -- not accepted -- Hirsts' panicgrass
  Panicum hirsutum Sw. -- accepted -- hairy panicgrass
  Panicum hispidifolium Swallen -- accepted
  Panicum hispidum Swallen -- not accepted
  Panicum hondurense Swallen -- not accepted
  Panicum ichunense Swallen -- accepted
  Panicum incumbens Swallen -- accepted
  Panicum infuscum Swallen -- not accepted
  Panicum inversum Swallen -- not accepted
  Panicum irregulare Swallen -- not accepted
  Panicum itatiaiae Swallen -- not accepted
  Panicum kalmii Sw. ex Wikstr. -- not accepted
  Panicum kavanayense Swallen -- not accepted
  Panicum kleinii Swallen -- not accepted
  Panicum kuhlmannii Swallen -- not accepted
  Panicum lanatum Sw. -- not accepted
  Panicum laxum Sw. -- not accepted -- lax panicgrass
  Panicum laxum var. laxum Sw. -- not accepted
  Panicum lithophilum Swallen -- not accepted -- Swallen's panicgrass
  Panicum longiculme Swallen -- not accepted
  Panicum longipedicellatum Swallen -- accepted
  Panicum lundellii Swallen -- not accepted
  Panicum lutzii Swallen -- not accepted
  Panicum machrisiana Swallen -- accepted
  Panicum maguirei Swallen -- not accepted
  Panicum manacalense Swallen -- not accepted
  Panicum manacalensis Swallen -- not accepted
  Panicum mauryi Swallen -- not accepted
  Panicum molle Sw. -- not accepted
  Panicum molliculmum Swallen -- not accepted
  Panicum multinodosum Swallen -- not accepted
  Panicum nemorosum Sw. -- not accepted
  Panicum nemorosum var. nemorosum Sw. -- not accepted
  Panicum oblitum Swallen -- not accepted
  Panicum oryzoides Sw. -- not accepted
  Panicum pallens Sw. -- not accepted
  Panicum pandum Swallen -- accepted
  Panicum paucifolium Swallen -- not accepted
  Panicum petilum Swallen -- accepted
  Panicum petrense Swallen -- accepted
  Panicum philadelphicum ssp. lithophilum (Swallen) Freckmann & Lelong -- not accepted
  Panicum piauiense Swallen -- not accepted
  Panicum pilatum Swallen -- not accepted
  Panicum pilosum Sw. -- accepted
  Panicum pilosum var. pilosum Sw. -- not accepted
  Panicum pinetorum Swallen -- not accepted
  Panicum pirineosense Swallen -- not accepted
  Panicum politii Swallen -- not accepted
  Panicum polygamum Sw. -- not accepted
  Panicum pompale Swallen -- not accepted
  Panicum ramiparum Swallen -- not accepted
  Panicum rigens Sw. -- not accepted
  Panicum rigidulum ssp. abscissum (Swallen) Freckmann & Lelong -- not accepted
  Panicum rigidum Swallen -- not accepted
  Panicum rivale Swallen -- accepted
  Panicum sanguinale var. digitatum (Sw.) Hack. ex Urb. -- not accepted
  Panicum semitectum Swallen -- not accepted
  Panicum semitectum Swallen -- not accepted
  Panicum setosum Sw. -- not accepted
  Panicum sipapoense Swallen -- not accepted
  Panicum spissifolium Swallen -- not accepted
  Panicum steyermarkii Swallen -- not accepted
  Panicum subcordatum Swallen -- not accepted
  Panicum subinclusum Swallen -- not accepted
  Panicum sublaeve Swallen -- accepted
  Panicum succisum Swallen -- not accepted
  Panicum supernum Swallen -- not accepted
  Panicum tatei Swallen -- not accepted
  Panicum telmatum Swallen -- not accepted
  Panicum tiricaense Swallen -- not accepted
  Panicum tiricaoides Swallen -- not accepted
  Panicum transiens Swallen -- not accepted
  Panicum trichoides Sw. -- accepted -- tropical panicgrass
  Panicum umbonulatum Swallen -- not accepted
  Panicum vaginatum (Sw.) Gren. & Godr. -- not accepted
  Panicum vannum Swallen -- not accepted
  Panicum variifolium Swallen -- not accepted
  Panicum venosum Swallen -- not accepted
  Panicum vigoratum Swallen -- not accepted
  Panicum vinaceum Swallen -- not accepted
  Panicum vinnulum Swallen -- not accepted
  Panicum wurdackii Swallen -- not accepted
  Panicum yavitaense Swallen -- accepted
  Parathesis serrulata auct. non (Sw.) Mez -- not accepted
  Pariana aurita Swallen -- accepted
  Pariana distans Swallen -- accepted
  Pariana ligulata Swallen -- accepted
  Pariana modesta Swallen -- accepted
  Pariana nervata Swallen -- accepted
  Pariana obtusa Swallen -- accepted
  Pariana ovalifolia Swallen -- accepted
  Pariana pallida Swallen -- accepted
  Pariana setosa Swallen -- accepted
  Pariana sociata Swallen -- accepted
  Pariana strigosa Swallen -- accepted
  Pariana velutina Swallen -- accepted
  Pariana violascens Swallen -- accepted
  Pariti elatum (Sw.) G. Don -- not accepted
  Parodiella erectifolia (Swallen) Reeder & C. Reeder -- not accepted
  Paspalum album Swallen -- not accepted
  Paspalum ambustum Swallen -- not accepted
  Paspalum atratum Swallen -- accepted
  Paspalum aureolatum Swallen -- not accepted
  Paspalum axillare Swallen -- accepted
  Paspalum caperatum Swallen -- not accepted
  Paspalum chapadense Swallen -- not accepted
  Paspalum clandestinum Swallen -- accepted
  Paspalum compressifolium Swallen -- accepted
  Paspalum compressum (Sw.) Nees -- not accepted
  Paspalum compressum (Sw.) Raspail -- not accepted
  Paspalum cordaense Swallen -- accepted
  Paspalum costellatum Swallen -- accepted
  Paspalum crispulum Swallen -- accepted
  Paspalum crustarium Swallen -- accepted
  Paspalum dasytrichium Dusén ex Swallen -- accepted
  Paspalum dasytrichium var. dasytrichium Dusén ex Swallen -- not accepted
  Paspalum decumbens Sw. -- accepted -- decumbent crowngrass
  Paspalum delicatum Swallen -- accepted
  Paspalum diamantinum Swallen -- not accepted
  Paspalum digitatum (Sw.) Kunth -- not accepted
  Paspalum dissectum Sw. ex Roem. & Schult. -- not accepted
  Paspalum distichum ssp. vaginatum (Sw.) Maire -- not accepted
  Paspalum distichum var. vaginatum (Sw.) Griseb. -- not accepted
  Paspalum eitenii Swallen -- not accepted
  Paspalum erectifolium Swallen -- not accepted
  Paspalum fessum Swallen -- not accepted
  Paspalum filiforme Sw. -- accepted
  Paspalum formosulum Swallen -- not accepted
  Paspalum formosum Swallen -- accepted
  Paspalum froesianum Swallen -- not accepted
  Paspalum goeldii Swallen -- not accepted
  Paspalum guaricense Swallen -- accepted
  Paspalum haughtii Swallen -- not accepted
  Paspalum hispidum Swallen -- accepted
  Paspalum humigenum Swallen -- not accepted
  Paspalum indutum Swallen -- not accepted
  Paspalum intonsum Swallen -- not accepted
  Paspalum involutum Swallen -- not accepted
  Paspalum lacustre Chase ex Swallen -- accepted
  Paspalum latipes Swallen -- accepted
  Paspalum lineare Sw. ex Steud. -- not accepted
  Paspalum lucidulum Swallen -- not accepted
  Paspalum luticola Swallen -- not accepted
  Paspalum macedoi Swallen -- not accepted
  Paspalum mollifolium Swallen -- not accepted
  Paspalum morulum Swallen -- not accepted
  Paspalum nitidum Swallen -- not accepted
  Paspalum oteroi Swallen -- accepted
  Paspalum pallens Swallen -- accepted
  Paspalum paludosum Swallen -- accepted
  Paspalum pannuceum Swallen -- not accepted
  Paspalum paranaense Swallen -- not accepted
  Paspalum paucifolium Swallen -- accepted
  Paspalum petrosum Swallen -- accepted
  Paspalum piligerum Swallen -- not accepted
  Paspalum pisinnum Swallen -- accepted
  Paspalum planiusculum Swallen -- not accepted
  Paspalum polystachyum (Sw.) Kuntze -- not accepted
  Paspalum pontanalis Swallen -- accepted
  Paspalum ramosum Swallen -- not accepted
  Paspalum redondense Swallen -- accepted
  Paspalum rigens Swallen -- not accepted
  Paspalum schultesii Swallen -- accepted
  Paspalum sericatum Swallen -- not accepted
  Paspalum setosum (Swallen) S. Denham -- accepted
  Paspalum spissum Swallen -- accepted
  Paspalum swallenii Chase ex Swallen -- not accepted
  Paspalum telmatum Swallen -- accepted
  Paspalum tenuifolium Swallen -- not accepted
  Paspalum texanum Swallen -- not accepted
  Paspalum trinii Swallen -- accepted
  Paspalum vaginatum Sw. -- accepted -- seashore paspalum
  Paspalum validum Swallen -- accepted
  Paspalum vescum Swallen -- not accepted
  Paspalum viale Swallen -- not accepted
  Passiflora X colvillii Sweet -- accepted -- Colville's passionflower
  Pavonia corymbosa (Sw.) Willd. -- accepted -- tight-flower swampmallow
  Pavonia racemosa Sw. -- not accepted
  Pectis humifusa Sw. -- accepted -- yerba de San Juan
  Pedilanthus canaliculatus (Lodd.) Sweet -- not accepted
  Pedilanthus cordellatus (Haw.) Sweet -- not accepted
  Pedilanthus subcarinatus (Haw.) Sweet -- not accepted
  Pelexia adnata (Sw.) Spreng. -- accepted -- hachuela, Spiranthes adnada
  Peltapteris peltata (Sw.) C.V. Morton -- not accepted
  Peniculus Swallen -- not accepted
  Peniculus angustifolius Swallen -- not accepted
  Pennisetum polystachion ssp. setosum (Sw.) Brunken -- not accepted
  Pennisetum polystachyon ssp. setosum (Sw.) Brunken -- not accepted -- feathery pennisetum, mission grass, missiongrass, queue de chat, thin napiergrass
  Pennisetum setosum (Sw.) Rich. -- not accepted
  Pennisetum viride (L.) R. Br. ex Sweet -- not accepted
  Penstemon australis var. ameles Crosswh. -- not accepted
  Penstemon brevibarbatus Crosswh. -- not accepted
  Penstemon compactus (D.D. Keck) Crosswh. -- accepted -- cache beardtongue, compact penstemon
  Penstemon deaveri Crosswh. -- accepted -- Mt. Graham beardtongue
  Penstemon decurvus Pennell ex Crosswh. -- not accepted
  Penstemon degeneri Crosswh. -- accepted -- Degener beardtongue, Degener's beardtongue
  Penstemon francisci-pennellii Crosswh. -- not accepted
  Penstemon inflatus Crosswh. -- accepted -- inflated beardtongue
  Penstemon leiophyllus var. francisci-pennellii (Crosswh.) N.H. Holmgren -- accepted -- smoothleaf beardtongue, smoothleaf penstemon
  Penstemon maguirei Crosswh. -- not accepted
  Penstemon nyeensis Crosswh. -- not accepted
  Penstemon pseudoparvus Crosswh. -- not accepted -- Mt. Washington beardtongue
  Penstemon pseudoputus (Crosswh.) N.H. Holmgren -- accepted -- Kaibab Plateau beardtongue
  Penstemon ramosus Crosswh. -- not accepted -- lanceleaf beardtongue, lanceleaf penstemon
  Penstemon virgatus ssp. asa-grayi Crosswh. -- not accepted
  Penstemon virgatus ssp. pseudoputus Crosswh. -- not accepted
  Penstemon virgatus ssp. putus (A. Nelson) Crosswh. -- not accepted
  Penstemon virgatus var. asa-grayi (Crosswh.) Dorn -- accepted -- upland blue beardtongue
  Pentaraphia calycina (Sw.) Hanst. -- not accepted
  Pentaraphia corymbosa (Sw.) Hanst. -- not accepted
  Pentaraphia craniolaria (Sw.) Decne. -- not accepted
  Pentaraphia exserta (Sw.) Decne. -- not accepted
  Pentaraphia pumila (Sw.) Hanst. -- not accepted
  Pentaraphia scabra (Sw.) Hanst. -- not accepted
  Pentaraphia ventricosa (Sw.) Hanst. -- not accepted
  Pentarrhaphis annua Swallen -- not accepted
  Peperomia amplexicaulis (Sw.) A. Dietr. -- accepted -- Jackie's saddle
  Peperomia emarginella (Sw. ex Wikstr.) C. DC. -- accepted -- Guadeloupe peperomia
  Peperomia glabella (Sw.) A. Dietr. -- accepted -- cypress peperomia
  Peperomia serpens (Sw.) Louden -- accepted -- vinagre
  Peperomia tenella (Sw.) A. Dietr. -- accepted -- jayuya
  Petalostemon compactus (Spreng.) Swezey -- not accepted
  Phaeoceros bolusii (Sim) S.W. Arnell -- accepted
  Phaeoceros minutus (Mitt.) S.W. Arnell -- accepted
  Pharbitis barbigera (Sweet) G. Don -- not accepted
  Pharus longifolius Swallen -- not accepted
  Pheidonocarpa corymbosa (Sw.) L.E. Skog -- accepted
  Pheidonocarpa corymbosa ssp. corymbosa (Sw.) L.E. Skog -- accepted
  Phippsia andersonii (Swallen) Á. Löve & D. Löve -- not accepted
  Phippsia borealis (Swallen) Á. Löve & D. Löve -- not accepted
  Phippsia borealis ssp. borealis (Swallen) Á. Löve & D. Löve -- not accepted
  Phlegmariurus filiformis (Sw.) W.H. Wagner -- not accepted
  Phlegmariurus taxifolius (Sw.) Á. Löve & D. Löve -- not accepted
  Phlox maculata var. odorata (Sweet) Wherry -- not accepted
  Phlox nivalis Lodd. ex Sweet -- accepted -- trailing phlox
  Phlox nivalis ssp. nivalis Lodd. ex Sweet -- accepted -- trailing phlox
  Phyllanthus angustifolius (Sw.) Sw. -- accepted -- foliage flower
  Phyodina cordifolia (Sw.) Rohweder -- not accepted
  Physostegia speciosa (Sweet) Sweet -- not accepted
  Physostegia virginiana var. speciosa (Sweet) A. Gray -- not accepted
  Physurus hirtellus (Sw.) Lindl. -- not accepted
  Picramnia Sw. -- accepted -- bitterbush
  Picramnia excelsa (Sw.) Planch. -- not accepted
  Picramnia pentandra Sw. -- accepted -- Florida bitterbush
  Picrasma excelsa (Sw.) Planch. -- accepted -- bitter-ash, bitterwood
  Pilea depressa (Sw.) Blume -- accepted -- depressed clearweed
  Pilea herniarioides (Sw.) Lindl. -- accepted -- Caribbean clearweed
  Pilea microphylla var. trianthemoides (Sw.) Griseb. -- not accepted
  Pilea nummulariifolia (Sw.) Wedd. -- accepted -- creeping charlie
  Pilea repens (Sw.) Wedd. -- not accepted
  Pilea trianthemoides (Sw.) Lindl. -- accepted -- artillery plant
  Pimenta acris (Sw.) Kostel. -- not accepted
  Pinus culminicola var. discolor (D.K. Bailey & Hawksw.) Silba -- not accepted
  Pinus discolor D.K. Bailey & Hawksw. -- accepted -- border pinyon, pińón de la frontera
  Pinus remota (Little) D.K. Bailey & Hawksw. -- accepted -- papershell pinyon, pino de papel
  Piper emarginellum Sw. ex Wikstr. -- not accepted
  Piper glabellum Sw. -- not accepted
  Piper hispidum Sw. -- accepted -- Jamaican pepper
  Piper scabrum Sw. -- not accepted
  Piper serpens Sw. -- not accepted
  Piper tenellum Sw. -- not accepted
  Piresia Swallen -- accepted
  Piresia goeldii Swallen -- accepted
  Piresia sympodica (Döll) Swallen -- accepted
  Piriqueta racemosa (Jacq.) Sweet -- accepted -- rigid stripeseed
  Pisonia subcordata Sw. -- accepted -- water mampoo
  Pistacia texana Swingle -- not accepted -- American pistachio, Texas pistache
  Pityrogramma chrysophylla (Sw.) Link -- accepted -- island goldback fern
  Pityrogramma sulphurea (Sw.) Maxon -- accepted -- Jamaican goldback fern
  Plagiopus oederiana (Sw.) Crum & Anderson -- accepted -- Oeder's plagiopus moss
  Plagiotheciella pilifera (Sw. ex Hartm.) Fleisch. -- not accepted
  Plagiothecium micans (Sw.) Par. -- not accepted
  Plagiothecium piliferum (Sw. ex Hartm.) Schimp. in B.S.G. -- accepted -- plagiothecium moss
  Pluchea purpurascens (Sw.) DC. -- not accepted
  Poa fibrata Swallen -- not accepted
  Poa filiculmis Swallen -- not accepted
  Poa glutinosa Sw. -- not accepted
  Poa mulleri Swallen -- accepted
  Poa petrosa Swallen -- accepted
  Poa prolifera Sw. -- not accepted
  Poa reitzii Swallen -- accepted
  Poa sharpii Swallen -- accepted
  Poa tacanae Swallen -- accepted
  Poa venosa Swallen -- accepted
  Poa X fibrata Swallen -- not accepted -- Lassen County bluegrass
  Podocarpus macrophyllus (Thunb.) Sweet -- accepted -- yew plum pine
  Podocarpus macrophyllus var. macrophyllus (Thunb.) Sweet -- accepted
  Pogonatum alpinum var. septentrionale (Sw.) Brid. -- not accepted
  Poinsettia punicea (Sw.) Klotzsch & Garcke -- not accepted
  Pollinia brevifolia (Sw.) Spreng. -- not accepted
  Pollinia fastigiata (Sw.) Spreng. -- not accepted
  Polypodium angustifolium Sw. -- not accepted
  Polypodium myosuroides Sw. -- not accepted
  Polypodium trichomanoides Sw. -- not accepted
  Polypodium triseriale Sw. -- not accepted -- anglevein fern
  Polystachya concreta (Jacq.) Garay & H.R. Sweet -- accepted -- greater yellowspike orchid
  Polystachya luteola (Sw.) Hook. -- not accepted
  Polystichum rhizophyllum (Sw.) C. Presl -- accepted -- tailed hollyfern
  Polytaenium lineatum (Sw.) J. Sm. -- not accepted
  Polytrichastrum alpinum var. septentrionale (Sw.) G.L. Sm. -- not accepted
  Polytrichum alpinum var. septentrionale (Sw.) Lindb. -- not accepted
  Pontederia limosa Sw. -- not accepted
  Prescotia oligantha (Sw.) Lindl. -- not accepted -- small Prescott orchid
  Prescotia stachyodes (Sw.) Lindl. -- not accepted
  Prescotia stachyoides (Sw.) Lindl. -- not accepted
  Prescottia oligantha (Sw.) Lindl. -- accepted -- small Prescott orchid
  Prescottia stachyodes (Sw.) Lindl. -- accepted -- mountain Prescott orchid
  Prescottia stachyoides (Sw.) Lindl. -- not accepted
  Prinos montanus Sw. -- not accepted
  Prinos sideroxyloides Sw. -- not accepted
  Prosopis juliflora auct. non (Sw.) DC. -- not accepted
  Prosopis juliflora (Sw.) DC. -- accepted -- mesquite
  Prosopis juliflora var. juliflora (Sw.) DC. -- not accepted -- mesquite
  Prosthechea serrulata (Sw.) W.E. Higgins -- not accepted -- smalltooth star orchid
  Prunus occidentalis Sw. -- accepted -- western cherry laurel
  Pseudolmedia spuria (Sw.) Griseb. -- accepted -- false breadnut
  Pseudorhipsalis alata (Sw.) Britton & Rose -- accepted
  Psidium guineense Sw. -- accepted -- Guinea guava
  Psidium montanum Sw. -- accepted -- mountain guava
  Psilotum Sw. -- accepted -- whisk fern
  Psilotum complanatum Sw. -- accepted -- flatfork fern
  Psychotria alpina Sw. -- not accepted
  Psychotria brachiata Sw. -- accepted -- palo de cachimbo
  Psychotria crocea Sw. -- not accepted
  Psychotria glabrata Sw. -- accepted
  Psychotria grandis Sw. -- accepted -- cachimbo grande
  Psychotria hoffmannseggiana var. tribracteata (Sw.) Steyerm. -- accepted -- Hoffmannsegg's wild coffee
  Psychotria horizontalis Sw. -- accepted
  Psychotria nervosa Sw. -- accepted -- Seminole balsamo
  Psychotria nervosa var. nervosa Sw. -- not accepted
  Psychotria nutans Sw. -- not accepted -- floating balsamo
  Psychotria patens auct. non Sw. -- not accepted
  Psychotria patens Sw. -- accepted
  Psychotria pubescens Sw. -- accepted -- hairy wild coffee
  Psychotria tenuifolia Sw. -- accepted -- shortleaf wild coffee
  Psychotria uliginosa Sw. -- not accepted -- tres cabezas
  Pteris denticulata Sw. -- accepted -- toothed brake
  Pteris tripartita Sw. -- accepted -- giant brake
  Ptychomitrium polyphyllum (Swartz) Bruch & Schimper -- accepted
  Puccinellia andersoni Swallen -- not accepted
  Puccinellia andersonii Swallen -- accepted -- Anderson's alkaligrass
  Puccinellia borealis Swallen -- accepted
  Puccinellia borealis ssp. borealis Swallen -- not accepted
  Puccinellia glabra Swallen -- not accepted
  Puccinellia grandis Swallen -- not accepted
  Puccinellia hultenii Swallen -- not accepted -- Hulten's alkaligrass
  Puccinellia triflora Swallen -- not accepted
  Pyrola americana Sweet -- accepted -- American wintergreen, round-leaved shineleaf, round-leaved wintergreen, wild lily-of-the-valley
  Pyrola asarifolia ssp. americana (Sweet) Krísa -- not accepted
  Pyrola chlorantha Sw. -- accepted -- green-flowered shineleaf, green-flowered wintergreen, pale-green wintergreen
  Pyrola media Sw. -- accepted
  Pyrola rotundifolia ssp. americana (Sweet) R.T. Clausen -- not accepted
  Pyrola rotundifolia var. americana (Sweet) Fernald -- not accepted
  Pyrola X media Sw. (pro so.) -- not accepted
  Quararibea turbinata (Sw.) Poir. -- accepted -- swizzlestick tree
  Quassia excelsa Sw. -- not accepted
  Rabdochloa virgata (Sw.) P. Beauv. -- not accepted
  Raddiella Swallen -- accepted
  Raddiella malmeana (Ekman) Swallen -- accepted
  Raddiella molliculma (Swallen) C.E. Calderón & Soderstr. -- accepted
  Raddiella nana (Döll) Swallen -- not accepted
  Raddiella truncata Swallen -- not accepted
  Rapanea coriacea (Sw.) Mez -- not accepted
  Reitzia Swallen -- accepted
  Reitzia smithii Swallen -- accepted
  Renealmia occidentalis (Sw.) Sweet -- not accepted -- bijao
  Rhabdochloa virgata (Sw.) P. Beauv. -- not accepted
  Rhamnus sphaerosperma Sw. -- accepted -- West Indian buckthorn
  Rhododendron bicolor (Aiton) Sweet -- not accepted
  Rhododendron canescens (Michx.) Sweet -- accepted -- mountain azalea, Piedmont azalea, southern pinxterbloom azalea
  Rhododendron canescens var. canescens (Michx.) Sweet -- not accepted -- mountain azalea
  Rhododendron luteum Sweet -- accepted
  Rhododendron speciosum (Willd.) Sweet -- not accepted
  Rhoeo spathacea (Sw.) Stearn -- not accepted
  Rhynchosia phaseoloides (Sw.) DC. -- accepted -- crabseye
  Rhynchosia reticulata (Sw.) DC. -- accepted -- habilla
  Rhynchospora pusilla (Sw.) Griseb., non Chapm. ex M.A. Curtis -- not accepted -- fairy beaksedge
  Rhytidophyllum grande (Sw.) Mart. -- accepted
  Rhytidophyllum grande var. grande (Sw.) Mart. -- accepted
  Rochefortia Sw. -- accepted
  Rochefortia cuneata Sw. -- not accepted
  Rondeletia pilosa Sw. -- accepted -- cordobancillo peludo
  Rosa odorata (Andrews) Sweet -- not accepted -- tea rose
  Rosa X odorata (Andrews) Sweet (pro sp.) -- accepted -- tea rose
  Rousselia humilis (Sw.) Urb. -- accepted -- shineseed
  Rubus coronarius (Sims) Sweet -- accepted -- cultivated raspberry
  Rubus lemurum S.W. Br. -- not accepted
  Rubus ursinus var. macropetalus (Douglas ex Hook.) S.W.