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Taxon author: Spreng.

ITIS records citing taxon author "Spreng."
 
 Kingdom Animalia
  Lucina muricata (Sprengler, 1798) -- valid -- spinose lucine
  Mactrellona alata (Sprengler, 1802) -- valid -- winged surfclam
  Solen obliquus Sprengler, 1794 -- valid -- oblique jackknife clam
 
 Kingdom Fungi
  Cladonia cariosa (Ach.) Spreng. -- accepted
  Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. -- accepted
  Cladonia coniocraea (Flörke) Spreng. -- accepted
  Cladonia decorticata (Flörke) Spreng. -- accepted
  Cladonia polydactyla (Flörke) Spreng. -- accepted
  Coccocarpia erythroxyli (Spreng.) Swinscow -- accepted
  Coccocarpia palmicola (Spreng.) Arv. & Galloway -- accepted
  Dactylospora parasitica (Flörke ex Spreng.) Zopf -- accepted
  Lecanora strobilina (Spreng.) Kieff. -- accepted
  Nephroma bellum (Spreng.) Tuck. -- accepted
  Phlyctis argena (Spreng.) Flot. -- accepted
  Ramalina celastri (Spreng.) Krog & Swinscow -- accepted
  Trapeliopsis wallrothii (Flörke ex Spreng.) Hertel & Gotth. Schneid. -- accepted
  Tuckermannopsis americana (Spreng.) Hale -- accepted
 
 Kingdom Plantae
  Abutilon megapotamicum (A. Spreng.) A. St.-Hil. & Naudin -- accepted -- trailing abutilon
  Acacia irrorata Sieber ex Spreng. -- accepted -- green wattle
  Acalypha bisetosa Bertero ex Spreng. -- accepted -- streambank copperleaf
  Acalypha poiretii Spreng. -- accepted -- Poiret's copperleaf
  Acnida cuspidata Bertero ex Spreng. -- not accepted
  Actinea acaulis (Pursh) Spreng. -- not accepted
  Aeschynanthus grandiflorus (D. Don) Spreng. -- not accepted
  Aeschynanthus parviflorus (D. Don) Spreng. -- accepted
  Ageratina adenophora (Spreng.) King & H. Rob. -- accepted -- crofton weed, Maui pamakani, Mexican devil, sticky snakeroot
  Ageratum domingense Spreng. -- accepted
  Agropyron bonaepartis (Spreng.) T. Durand & Schinz -- not accepted
  Agropyron geminatum (Spreng.) Schult. -- not accepted
  Agropyron missuricum (Spreng.) Farw. -- not accepted
  Agrostis beteriana Spreng. ex Steud. -- not accepted
  Agrostis brasiliensis Spreng. -- not accepted
  Agrostis canina var. montevidensis (Spreng. ex Nees) Kuntze -- not accepted
  Agrostis debilis (Kunth) Spreng. -- not accepted
  Agrostis diffusa Muhl. ex Spreng. -- not accepted
  Agrostis erecta (Schreb.) Spreng. -- not accepted
  Agrostis filiformis (G. Forst.) Spreng. -- not accepted
  Agrostis glabrata (Kunth) Spreng. -- not accepted
  Agrostis glaucescens (C. Presl) Spreng. -- not accepted
  Agrostis implicata (Kunth) Spreng. -- not accepted
  Agrostis montevidensis Spreng. ex Nees -- accepted
  Agrostis montevidensis f. montevidensis Spreng. ex Nees -- accepted
  Agrostis montevidensis var. montevidensis Spreng. ex Nees -- not accepted
  Agrostis mucronata (Kunth) Spreng. -- not accepted
  Agrostis noveboracensis Spreng. -- not accepted
  Agrostis nutans Spreng. -- not accepted
  Agrostis pernambucensis Spreng. -- not accepted
  Agrostis peruviana (P. Beauv.) Spreng. -- not accepted
  Agrostis quadridentata (Kunth) Spreng. -- not accepted
  Agrostis quitensis Spreng. -- not accepted
  Agrostis rigida (Kunth) Spreng. -- not accepted
  Agrostis setosa (Kunth) Spreng. -- not accepted
  Agrostis setosa Spreng. ex Trin. -- not accepted
  Agrostis sporobolus Spreng. -- not accepted
  Agrostis stipoides (Kunth) Spreng. -- not accepted
  Agrostis tenuissima Spreng. -- not accepted
  Agrostis villosa Rchb. ex Spreng. -- not accepted
  Aira arctica Spreng. -- not accepted
  Aira brasiliensis Spreng. -- not accepted
  Aira caespitosa var. arctica (Spreng.) Thurb. ex A. Gray -- not accepted
  Aira distichophylla Spreng. -- not accepted
  Aira glauca Spreng. -- not accepted
  Aira missurica Spreng. ex B.D. Jacks. -- not accepted
  Aira pensylvanica Spreng. -- not accepted
  Aira tenuissima (Mart. ex Schrank) Spreng. -- not accepted
  Aira trichodes (Kunth) Spreng. -- not accepted
  Allionia aggregata (Ortega) Spreng. -- not accepted
  Allionia decumbens (Nutt.) Spreng. -- not accepted
  Allium tuberosum Rottler ex Spreng. -- accepted -- Chinese chives
  Allocasuarina nana (Sieber ex Spreng.) L.A.S. Johnson -- accepted -- stunted she-oak
  Allocasuarina paludosa (Sieber ex Spreng.) L.A.S. Johnson -- accepted -- scrub she-oak
  Alloplectus dichrous (Spreng.) DC. -- not accepted
  Alnus rugosa (Du Roi) Spreng. -- not accepted
  Alnus rugosa var. rugosa (Du Roi) Spreng. -- not accepted
  Alopecurus carolinianus Spreng. -- not accepted
  Alsophila aspera (L.) Spreng. -- not accepted
  Alsophila portoricensis (Spreng. ex Kuhn) D.S. Conant -- not accepted -- Puerto Rico alsophila
  Amarella plebeja (Ledeb. ex Spreng.) Greene -- not accepted
  Ambrosia tenuifolia Spreng. -- accepted -- field ragweed, slimleaf bur ragweed, slimleaf burr ragweed
  Amyris diatrypa Spreng. -- accepted -- hairy torchwood
  Anatherum berteroanum Spreng. ex Schult. -- not accepted
  Anatherum megapotamicum Spreng. -- not accepted
  Anatherum portoricense Spreng. -- not accepted
  Anatherum tripsacoides (Humb. & Bonpl. ex Willd.) Spreng. -- not accepted
  Anatherum virginicum (L.) Spreng. -- not accepted
  Andropogon curtipendulus (Michx.) Spreng. ex Steud. -- not accepted
  Andropogon domingensis Spreng. ex Steud. -- not accepted
  Andropogon domingensis (Spreng. ex Schult.) F.T. Hubb. -- not accepted
  Andropogon gracilis Spreng. -- accepted -- wire bluestem
  Andropogon gracilis var. gracilis Spreng. -- accepted
  Andropogon latifolius Spreng. -- not accepted
  Andropogon megapotamicus Spreng. -- not accepted
  Andropogon ternatus (Spreng.) Nees -- accepted
  Andropogon virens Spreng. -- not accepted
  Androsace chamaejasme ssp. lehmanniana (Spreng.) Hultén -- accepted -- Lehmann's rockjasmine
  Androsace lehmanniana Spreng. -- not accepted
  Anemia cicutaria Poepp. ex Spreng. -- accepted -- hemlock fern
  Anemia cuneata Kunze ex Spreng. -- accepted
  Aneura sessilis (Spreng.) Sull. -- not accepted
  Anisophyllum berteroanum (Balb. ex Spreng.) Klotzsch & Garcke -- not accepted
  Anthephora villosa Spreng. -- not accepted
  Antidesma bunias (L.) Spreng. -- not accepted -- bignay chinalaurel
  Antidesma bunius (L.) Spreng. -- accepted -- bignay
  Antrophyum cajenense (Desv.) Spreng. -- accepted -- forked lineleaf fern
  Apluda gigantea (P. Beauv.) Spreng. -- not accepted
  Aquilaria sinensis (Lour.) Spreng. -- accepted
  Arctostaphylos alpina (L.) Spreng. -- not accepted
  Arctostaphylos alpina (L.) Spreng. -- not accepted -- alpine bearberry
  Arctostaphylos alpina var. alpina (L.) Spreng. -- not accepted
  Arctostaphylos uva-ursi (L.) Spreng. -- accepted -- bearberry, bearberry manzanita, kinnikinnick, mealberry
  Arenaria groenlandica (Retz.) Spreng. -- not accepted
  Arenaria procera Spreng. -- accepted
  Arenaria procera ssp. procera Spreng. -- accepted
  Argythamnia herbacea Spreng. -- not accepted
  Aristida domingensis (Spreng. ex Schult.) Kunth -- not accepted
  Aristida megapotamica Spreng. -- not accepted
  Aristida megapotamica var. megapotamica Spreng. -- not accepted
  Artemisia ludoviciana ssp. mexicana (Willd. ex Spreng.) D.D. Keck -- accepted -- cudweed sagewort, Louisiana sagewort, Mexican sagewort, Mexican white sagebrush, white sagebrush
  Artemisia ludoviciana var. mexicana (Willd. ex Spreng.) A. Gray -- not accepted
  Artemisia mexicana Willd. ex Spreng. -- not accepted
  Artemisia trifurcata Stephan ex Spreng. -- not accepted
  Artemisia vulgaris var. mexicana (Willd. ex Spreng.) Torr. & A. Gray -- not accepted
  Artocarpus champeden (Lour.) Spreng. -- not accepted
  Arundinella mikanii (Trin. ex Spreng.) Nees -- not accepted
  Arundo cuspidata (Spreng.) Schult. -- not accepted
  Arundo dioeca Spreng. -- not accepted
  Arundo dioica Spreng. -- not accepted
  Arundo kila Spreng. ex Steud. -- not accepted
  Arundo plumosa (Spreng.) Schult. -- not accepted
  Arundo quitensis Spreng. -- not accepted
  Arundo tenella Spreng. -- not accepted
  Asplenium integerrimum Spreng. -- not accepted
  Asplenium pycnocarpon Spreng. -- not accepted
  Aster richardsonii Spreng. -- not accepted
  Aster sibiricus ssp. richardsonii (Spreng.) A. Löve & D. Löve -- not accepted
  Aster squamatus (Spreng.) Hieron. -- not accepted
  Asterella elegans (Spreng.) Trev. -- accepted
  Asterella elegans (Spreng.) Trev. -- accepted -- elegant asterella
  Atheropogon antillarum (Poir.) Spreng. -- not accepted
  Atheropogon distichus (Kunth) Spreng. -- not accepted
  Atheropogon domingensis Spreng. -- not accepted
  Atheropogon gracilis (Kunth) Spreng. -- not accepted
  Atheropogon hirtus (Kunth) Spreng. -- not accepted
  Atheropogon humilis (P. Beauv. ex Kunth) Spreng. -- not accepted
  Atheropogon juncifolius (Desv.) Spreng. -- not accepted
  Atheropogon scorpiodes (Lag.) Spreng. -- not accepted
  Atheropogon triaena Trin. ex Spreng. -- not accepted
  Athyrium filix-femina var. michauxii (Spreng.) Farw. -- not accepted
  Athyrium pycnocarpon (Spreng.) Tidestr. -- not accepted -- diplazie ŕ sores denses, glade fern
  Attalea funifera Mart. ex Spreng. -- not accepted -- Bahia piassaba palm
  Avena brownii Spreng. -- not accepted
  Avena capensis Spreng. -- not accepted
  Avena cuspidata Willd. ex Spreng. -- not accepted
  Avena freita Orteg. ex Spreng. -- not accepted
  Axonopus brasiliensis (Spreng.) Kuhlm. -- accepted
  Azolla portoricensis Spreng. -- not accepted
  Barbula indica (Hook.) Spreng. in Steud. -- accepted -- barbula moss
  Barbula indica var. indica (Hook.) Spreng. in Steud. -- accepted -- barbula moss
  Barringtonia racemosa (L.) Spreng. -- accepted
  Besleria dichrus Spreng. -- not accepted
  Besleria mollissima Spreng. ex Steud. -- not accepted
  Bidens beckii Torr. ex Spreng. -- accepted -- Beck's water-marigold, Henderson's water-marigold, Oregon water-marigold
  Bidens cynapiifolia var. portoricensis (Spreng.) O.E. Schulz -- not accepted
  Bidens megapotamica Spreng. -- not accepted
  Bifora testiculata (L.) Spreng. -- accepted -- European bishop
  Bolbitis cladorrhizans (Spreng.) Ching -- not accepted
  Bolbitis portoricensis (Spreng.) Hennipman -- accepted -- Puerto Rico creepingfern
  Bonnaya bifolia (D. Don) Spreng. -- not accepted
  Bonnaya humilis Spreng. -- not accepted
  Bonnaya pumila (D. Don) Spreng. -- not accepted
  Botrychium dissectum Spreng. -- accepted -- botryche découpé, cut-leaf grape-fern, cutleaf grapefern, dissected grapefern
  Botrychium matricariae (Schrank) Spreng. -- not accepted
  Bouteloua megapotamica (Spreng.) Kuntze -- accepted
  Bouteloua triaena (Trin. ex Spreng.) Scribn. -- accepted
  Briza poiformis (Spreng.) Kuntze -- not accepted
  Bromus cristatus (L.) Spreng. -- not accepted
  Bromus hookeri var. pendulinus (Spreng.) E. Fourn. -- not accepted
  Bromus megapotamicus Spreng. -- not accepted
  Bromus pratensis (Huds.) Spreng. -- not accepted
  Bromus procerus Humb. ex Spreng. -- not accepted
  Bryum weigelii Spreng. in Biehler -- accepted -- Weigel's bryum moss
  Buchanania Spreng. -- accepted
  Bupleurum subovatum Link ex Spreng. -- not accepted
  Buxus citrifolia (Willd.) Spreng. -- not accepted
  Buxus laevigata (Sw.) Spreng. -- accepted -- smooth box
  Cajanus indicus Spreng. -- not accepted
  Calamagrostis agrostoides (Pursh) Pursh ex Spreng. -- not accepted
  Calamagrostis cuspidata Spreng. -- not accepted
  Calamagrostis plumosa Spreng. -- not accepted
  Calotheca cuspidata Spreng. -- not accepted
  Calotheca montevidensis Spreng. ex Steud. -- not accepted
  Calotheca poiformis Spreng. -- not accepted
  Calotheca purpurascens (Muhl.) Spreng. -- not accepted
  Camissonia cheiranthifolia (Hornem. ex Spreng.) Raim. -- not accepted -- beach suncup
  Camissonia cheiranthifolia ssp. cheiranthifolia (Hornem. ex Spreng.) Raim. -- not accepted -- beach suncup
  Camissonia micrantha (Hornem. ex Spreng.) P.H. Raven -- not accepted -- miniature suncup
  Camissoniopsis cheiranthifolia (Hornem. ex Spreng.) W.L. Wagner & Hoch -- accepted -- beach suncup
  Camissoniopsis cheiranthifolia ssp. cheiranthifolia (Hornem. ex Spreng.) W.L. Wagner & Hoch -- accepted -- beach suncup
  Camissoniopsis micrantha (Hornem. ex Spreng.) W.L. Wagner & Hoch -- accepted -- miniature suncup
  Carex albicans auct. non Willd. ex Spreng. -- not accepted -- whitetinge sedge
  Carex albicans Willd. ex Spreng. -- accepted -- whitetinge sedge
  Carex albicans var. albicans Willd. ex Spreng. -- accepted -- whitetinge sedge
  Carex atherodes Spreng. -- accepted -- awned sedge, carex épi-de-blé, slough sedge, wheat sedge
  Carex macrocephala Willd. ex Spreng. -- accepted -- largehead sedge
  Carex macrocephala var. macrocephala Willd. ex Spreng. -- not accepted -- largehead sedge
  Carex sprengelii Dewey ex Spreng. -- accepted -- long-beak sedge, Sprengel sedge, Sprengel's sedge
  Caryochloa Spreng. -- not accepted
  Caryochloa montevidensis Spreng. -- not accepted
  Caryochloa montevidensis var. montevidensis Spreng. -- not accepted
  Cassia grammica Spreng. -- not accepted
  Castilleja acuminata auct. non (Pursh) Spreng. -- not accepted
  Castilleja coccinea (L.) Spreng. -- accepted -- Indian paintbrush, scarlet Indian paintbrush
  Castilleja pallida (L.) Spreng. -- not accepted -- boreal Indian paintbrush
  Casuarina glauca Sieber ex Spreng. -- accepted -- Brazilian beefwood, gray she-oak, longleaf ironwood, saltmarsh ironwood, scaly-bark beefwood, suckering Australian-pine, swamp oak, swamp she-oak
  Casuarina nana Sieber ex Spreng. -- not accepted
  Casuarina paludosa Sieber ex Spreng. -- not accepted
  Caulinia guadalupensis Spreng. -- not accepted
  Cenchrus domingensis (Spreng. ex Schult.) Morrone -- accepted
  Cenchrus echinatus var. viridis (Spreng.) Spreng. ex Griseb. -- not accepted
  Cenchrus latifolius (Spreng.) Morrone -- accepted
  Cenchrus villosus (Spreng.) Spreng. -- not accepted
  Cenchrus viridis Spreng. -- not accepted
  Centaurea iberica Trevir. ex Spreng. -- accepted -- Iberian knapweed, Iberian star thistle, Iberian starthistle
  Cerastium brachypetalum ssp. tauricum (Spreng.) Murb. -- not accepted -- gray chickweed
  Chamaesyce berteriana (Balb. ex Spreng.) Millsp. -- not accepted -- Berteron's sandmat
  Chamaesyce berteroana (Balb. ex Spreng.) Millsp. -- not accepted -- Bertero's sandmat
  Chamaesyce elegans (Spreng.) Soják -- not accepted
  Chamaesyce heyneana (Spreng.) Soják -- not accepted
  Chamaesyce heyneana ssp. heyneana (Spreng.) Soják -- not accepted
  Cheilanthes vestita (Spreng.) Sw. -- not accepted
  Chimaphila menziesii (D. Don) Spreng. -- accepted -- little prince's pine
  Chloris caribaea Spreng. -- not accepted
  Chlorocrepis tristis (Willd. ex Spreng.) A. Löve & D. Löve -- not accepted
  Chromolaena integrifolia (Spreng.) R.M. King & H. Rob. -- accepted
  Chrozophora oblongifolia (Delile) A. Juss. ex Spreng. -- accepted
  Chrozophora plicata (Vahl) A. Juss. ex Spreng. -- accepted
  Chrozophora senegalensis (Lam.) Spreng. -- accepted
  Chrozophora tinctoria (L.) A. Juss. ex Spreng. -- accepted -- giradol
  Chrysanthemum nipponicum (Franch. ex Maxim.) Spreng. -- not accepted
  Chrysopogon fulvus (Spreng.) Chiov. -- accepted -- red false beardgrass
  Chrysurus aureus (L.) P. Beauv. ex Spreng. -- not accepted
  Cieca fuscescens (Spreng.) Kuntze -- not accepted
  Cirsium discolor (Muhl. ex Willd.) Spreng. -- accepted -- field thistle
  Cirsium pumilum Spreng. -- accepted -- pasture thistle
  Cirsium pumilum var. pumilum Spreng. -- accepted -- pasture thistle
  Cirsium undulatum (Nutt.) Spreng. -- accepted -- gray thistle, wavy-leaf thistle, wavyleaf thistle
  Cirsium undulatum var. undulatum (Nutt.) Spreng. -- accepted -- gray thistle, wavy-leaf thistle, wavyleaf thistle
  Claytonia chamissoi Ledeb. ex Spreng. -- not accepted
  Clidemia cymosa (Wendl. ex Spreng.) Alain -- not accepted -- camasey terciopelo
  Cochlospermum vitifolium (Willd.) Spreng. -- accepted -- silk cottontree
  Columnea dichroa (Spreng.) Kuntze -- not accepted
  Comocladia glabra (Schult.) Spreng. -- accepted -- carrasco
  Convolvulus meyeri Spreng. -- not accepted
  Convolvulus wallichianus Spreng. -- accepted -- Wallich's bindweed
  Conyza chilensis Spreng. -- not accepted
  Corsinia coriandrina (Spreng.) Lindb. -- accepted
  Corycarpus Spreng. -- not accepted
  Coscinodon Spreng. -- accepted -- coscinodon moss
  Cotula australis (Sieber ex Spreng.) Hook. f. -- accepted -- Australian waterbuttons
  Crantzia dichrus (Spreng.) Fritsch -- not accepted
  Croton adenophyllus Spreng. -- accepted
  Croton alnifolius var. quitensis (Spreng.) Müll. Arg. -- not accepted
  Croton argothamnoides Bertol. ex Spreng. -- not accepted
  Croton brasiliensis (Spreng.) Müll. Arg. -- not accepted
  Croton colliguaja Spreng. -- not accepted
  Croton floribundus Spreng. -- accepted
  Croton fuscescens Spreng. -- accepted
  Croton hibiscifolius Kunth ex Spreng. -- accepted
  Croton leprosus Spreng. ex Griseb. -- not accepted
  Croton montevidensis Spreng. -- accepted
  Croton oblongifolius Sieber ex Spreng. -- not accepted
  Croton pilosus Spreng. -- accepted
  Croton polyandrus Spreng. -- accepted
  Croton polystachyus Spreng. -- not accepted
  Croton quitensis Spreng. -- not accepted
  Croton strigosus Spreng. -- not accepted
  Croton venosus Spreng. -- not accepted
  Croton vestitus Spreng. -- accepted
  Crunocallis chamissoi (Ledeb. ex Spreng.) Rydb. -- not accepted
  Ctenadena lanata (Sieber ex Spreng.) Prokh. -- not accepted
  Ctenitis sloanei (Poepp. ex Spreng.) C.V. Morton -- accepted -- Florida lacefern
  Ctenium americanum Spreng. -- not accepted
  Cutandia dichotoma var. memphitica (Spreng.) Maire & Weiller -- not accepted
  Cutandia memphitica (Spreng.) K. Richt. -- accepted -- Memphisgrass
  Cyathea portoricensis Spreng. ex Kuhn -- accepted
  Cyclamen alpinum hort. Damman ex Sprenger -- accepted
  Cycloloma atriplicifolium (Spreng.) J.M. Coult. -- accepted -- tumble ringwing, winged pigweed, winged-pigweed
  Cymbopogon Spreng. -- accepted -- lemon grass
  Cymbopogon condensatus (Kunth) Spreng. -- not accepted
  Cymbopogon humboldtii Spreng. -- not accepted
  Cymbopogon melanocarpus (Elliott) Spreng. -- not accepted
  Cymbopogon schoenanthus (L.) Spreng. -- accepted -- camel grass
  Cynodon tenuis Trin. ex Spreng. -- not accepted
  Cyperus lupulinus (Spreng.) Marcks -- accepted -- Great Plains flatsedge
  Cyperus lupulinus ssp. lupulinus (Spreng.) Marcks -- accepted -- Great Plains flatsedge
  Cyrtopogon dichotomus (Michx.) Spreng. -- not accepted
  Dactylis memphitica Spreng. -- not accepted
  Dalea compacta Spreng. -- accepted -- compact prairie clover, compact prairieclover, plains praireclover
  Dalea compacta var. compacta Spreng. -- accepted -- compact prairie clover, compact prairieclover
  Dalea lanata Spreng. -- accepted -- woolly dalea, woolly prairie clover, woolly prairie-clover, woolly prairieclover
  Dalea lanata var. lanata Spreng. -- accepted -- woolly prairie clover, woolly prairieclover
  Dalea villosa (Nutt.) Spreng. -- accepted -- hairy prairieclover, silky prairie clover, silky prairie-clover, silky prairieclover
  Dalea villosa var. villosa (Nutt.) Spreng. -- accepted -- silky prairie clover, silky prairie-clover, silky prairieclover
  Dendrophthora domingensis (Spreng.) Eichler -- accepted -- Cuban tree destroyer
  Deschampsia arctica (Spreng.) Schischk. -- not accepted
  Deschampsia arctica (Spreng.) Merr. -- not accepted
  Desmodium leiocarpon (Spreng.) G. Don -- accepted
  Deyeuxia brasiliensis Spreng. ex Steud. -- not accepted
  Deyeuxia flavescens Clarion ex Spreng. -- not accepted
  Deyeuxia japonica Spreng. -- not accepted
  Deyeuxia megapotamica Spreng. -- not accepted
  Deyeuxia spicata Spreng. -- not accepted
  Dichromena microcephala Bertero ex Spreng. -- not accepted
  Dicliptera brachiata (Pursh) Spreng. -- accepted -- branched foldwing
  Didymodon luridus Hornsch. in Spreng. -- not accepted
  Didymodon vinealis var. luridus (Hornsch. in Spreng.) Zand. -- accepted -- didymodon moss
  Digitaria aurea (P. Beauv.) Spreng. -- not accepted
  Digitaria hispida (Thunb.) Spreng. -- not accepted
  Digitaria inaequale (Link) Spreng. -- not accepted
  Digitaria jamaicensis Spreng. -- not accepted
  Digitaria maritima (Kunth) Spreng. -- not accepted
  Dioscorea pilosiuscula Bertero ex Spreng. -- accepted -- bulbous yam
  Diplachne procera (Kunth) Spreng. -- not accepted
  Diplachne quitensis Spreng. -- not accepted
  Diplazium pycnocarpon (Spreng.) Broun -- accepted -- glade fern
  Ditaxis argothamnoides (Bertero ex Spreng.) Radcl.-Sm. & Govaerts -- accepted -- Blodgett's silverbush
  Dryas chamissonis Spreng. -- not accepted
  Dryas integrifolia ssp. chamissonis (Spreng.) Scoggan -- not accepted -- white mountain-avens
  Dryopteris domingensis (Spreng.) Maxon -- not accepted
  Dryopteris sclerophylla (Poepp. ex Spreng.) C. Chr. -- not accepted
  Dryopteris wallichiana (Spreng.) Hyl. -- accepted -- alpine woodfern
  Eatonia pensylvanica (Spreng.) A. Gray -- not accepted
  Echinochloa cubensis (Spreng.) Schult. -- not accepted
  Echinodorus berteroi (Spreng.) Fassett -- accepted -- upright burhead, upright burrhead
  Eichhornia paniculata (Spreng.) Solms -- accepted -- Brazilian water hyacinth
  Eleusine digitata (R. Br.) Spreng. -- not accepted
  Eleusine gracilis (Kunth) Spreng. -- not accepted
  Eleusine procera Spreng. ex Steud. -- not accepted
  Elionurus megapotamicus (Spreng.) Herter -- not accepted
  Elionurus muticus (Spreng.) Kuntze -- accepted
  Elionurus muticus var. muticus (Spreng.) Kuntze -- not accepted
  Elymus altaicus A. Spreng. -- not accepted
  Elyonurus megapotamicus (Spreng.) Herter -- not accepted
  Elyonurus muticus (Spreng.) Kuntze -- not accepted
  Entada rheedei Spreng. -- accepted
  Eragrostis megapotamica (Spreng.) Schult. -- not accepted
  Eragrostis purpurascens (Spreng.) Schult. -- accepted
  Erechtites cacalioides (Spreng.) Less. -- not accepted
  Erechtites hieraciifolia var. cacalioides (Fisch. ex Spreng.) Less. ex Griseb. -- not accepted -- American burnweed
  Erechtites hieraciifolius var. cacalioides (Fisch. ex Spreng.) Less. ex Griseb. -- not accepted
  Erechtites valerianifolia (Link ex Spreng.) DC. -- accepted -- tropical burnweed
  Eremopyrum bonaepartis (Spreng.) Nevski -- accepted -- tapertip false wheatgrass
  Erica diaphana Spreng. -- accepted -- heath
  Eriochloa brasiliensis Spreng. -- not accepted
  Erpodium domingense (Spreng.) Brid. ex C. Müll. -- accepted -- Domingo erpodium moss
  Eryngium baldwinii Spreng. -- accepted -- Baldwin's eryngo
  Erythrina humeana Spreng. -- accepted -- dwarf erythrina, dwarf Kaffirboom
  Eucalyptus eugenioides Sieber ex Spreng. -- accepted -- thin-leaf stringybark, white stringybark
  Eucalyptus pauciflora Sieber ex Spreng. -- accepted -- snow gum
  Eucalyptus stricta Sieber ex Spreng. -- accepted
  Eugenia caryophyllus (Spreng.) Bullock & S. Harrison -- not accepted
  Eugenia dombeyi (Spreng.) Skeels -- not accepted
  Eumecanthus umbrosus (Bertero ex Spreng.) Millsp. -- not accepted
  Eupatorium adenophorum Spreng. -- not accepted
  Eupatorium integrifolium Spreng. -- not accepted
  Euphorbia achanocarpa Guss. ex Spreng. -- not accepted
  Euphorbia berteriana Balb. ex Spreng. -- not accepted
  Euphorbia berteroana Balb. ex Spreng. -- accepted -- Bertero's sandmat
  Euphorbia depressa Torr. ex Spreng. -- not accepted
  Euphorbia domingensis Spreng. ex Boiss. -- not accepted
  Euphorbia elegans Spreng. -- accepted
  Euphorbia hexagona Nutt. ex Spreng. -- accepted -- six-angle spurge, sixangle spurge
  Euphorbia heyneana Spreng. -- accepted
  Euphorbia heyneana ssp. heyneana Spreng. -- accepted
  Euphorbia hibernica Spreng. -- not accepted
  Euphorbia lagascae Spreng. -- accepted
  Euphorbia lanata Sieber ex Spreng. -- not accepted
  Euphorbia lanceolata Spreng. -- not accepted
  Euphorbia rothiana Spreng. -- accepted
  Euphorbia syriaca Spreng. -- not accepted
  Euphorbia tannensis Spreng. -- accepted
  Euphorbia tannensis ssp. tannensis Spreng. -- accepted
  Euphorbia umbrosa Bertero ex Spreng. -- accepted
  Euphrasia tatarica auct. non Fisch. ex Spreng. -- not accepted -- European eyebright
  Eustachys caribaea (Spreng.) Herter -- not accepted -- Caribbean fingergrass
  Eustachys paspaloides ssp. caribaea (Spreng.) Nowack -- accepted
  Evolvulus glaber Spreng. -- not accepted
  Festuca antarctica Spreng. -- not accepted
  Festuca brizoides Spreng. -- not accepted
  Festuca commersonii Spreng. -- not accepted
  Festuca divaricata var. memphitica (Spreng.) Coss. & Durieu -- not accepted
  Festuca erecta (Lam.) Spreng. ex Kunth -- not accepted
  Festuca glomerata (L.) Spreng. -- not accepted
  Festuca grandiflora Spreng. ex Steud. -- not accepted
  Festuca lanata Spreng. -- not accepted
  Festuca livida (Kunth) Willd. ex Spreng. -- accepted
  Festuca memphitica (Spreng.) Boiss. ex Coss. -- not accepted
  Festuca nutans Spreng. -- not accepted
  Festuca obtusa Spreng. -- not accepted
  Festuca obtusiflora Willd. ex Spreng. -- not accepted
  Festuca orgyalis Willd. ex Spreng. -- not accepted
  Festuca pendulina Spreng. -- not accepted
  Festuca racemosa Willd. ex Spreng. -- not accepted
  Flaveria trinervia (Spreng.) C. Mohr -- accepted -- clustered yellowtops
  Fritillaria pudica (Pursh) Spreng. -- accepted -- yellow bells, yellow fritillary, yellow missionbells, yellowbells
  Fuirena pumila (Torr.) Spreng. -- accepted -- dwarf umbrella-sedge, dwarf umbrellasedge
  Gahnia aspera Spreng. -- accepted -- round sawsedge
  Gamochaeta simplicicaulis (Willd. ex Spreng.) Cabrera -- accepted -- simple-stem everlasting
  Gentiana plebeja Ledeb. ex Spreng. -- not accepted
  Gentianella amarella var. plebeja (Ledeb. ex Spreng.) Hultén -- not accepted
  Gilia aggregata (Pursh) Spreng. -- not accepted
  Glandularia tenera (Spreng.) Cabrera -- accepted -- Latin American mock vervain
  Gleichenia bifida (Willd.) Spreng. -- not accepted
  Gleichenia furcata (L.) Spreng. -- not accepted
  Glyceria pensylvanica (Spreng.) Heynh. -- not accepted
  Glyceria torreyana (Spreng.) Hitchc. -- not accepted
  Gnaphalium chilense Spreng. -- not accepted
  Goldbachia mikanii Trin. ex Spreng. -- not accepted
  Goniopteris sclerophylla (Poepp. ex Spreng.) Wherry -- not accepted
  Grimmia apocarpa var. conferta (Funck) Spreng. -- not accepted
  Grindelia ciliata (Nutt.) Spreng. -- accepted -- Spanish gold
  Guapira discolor (Spreng.) Little -- accepted -- beeftree, longleaf blolly
  Gymnopogon spicatus (Spreng.) Kuntze -- accepted
  Gymnopogon spicatus f. spicatus (Spreng.) Kuntze -- accepted
  Gymnopogon spicatus var. spicatus (Spreng.) Kuntze -- not accepted
  Gymnosperma glutinosum (Spreng.) Less. -- accepted -- gumhead, sticky selloa
  Gymnothrix K. Sprengel -- not accepted
  Gymnothrix latifolia (Spreng.) Schult. ex Roem. & Schult. -- not accepted
  Gymnotrix domingensis Spreng. ex Schult. -- not accepted
  Gymnotrix latifolia (Spreng.) Schult. -- not accepted
  Gynerium dioicum (Spreng.) Dalličre -- not accepted
  Gypsophila acutifolia Steven ex Spreng. -- accepted -- sharpleaf baby's-breath, sharpleaf babysbreath
  Habenaria clavellata (Michx.) Spreng. -- not accepted
  Habenaria huronensis (Nutt.) Spreng. -- not accepted
  Habenaria integra (Nutt.) Spreng. -- not accepted
  Habenaria nivea (Nutt.) Spreng. -- not accepted
  Habenaria psycodes (L.) Spreng. -- not accepted
  Habenaria unalascensis (Spreng.) S. Watson -- not accepted
  Hecistopteris pumila (Spreng.) J. Sm. -- accepted -- moss fern
  Helosis cayennensis (Sw.) Spreng. -- accepted
  Hemitelia grandifolia (Willd.) Spreng. -- not accepted
  Hemitelia horrida (L.) R. Br. ex Spreng. -- not accepted
  Henckelia Spreng. -- accepted
  Henckelia aromatica (Wall. ex D. Don) Spreng. -- not accepted
  Henckelia barbata (Jack) Spreng. -- not accepted
  Henckelia cinerea (D. Don) Spreng. -- not accepted
  Henckelia corniculata (Jack) Spreng. -- accepted
  Henckelia crinita (Jack) Spreng. -- accepted
  Henckelia elongata (Jack) Spreng. -- not accepted
  Henckelia frutescens (Jack) Spreng. -- not accepted
  Henckelia incana (Vahl) Spreng. -- accepted
  Henckelia macrophylla (Wall. ex D. Don) Spreng. -- not accepted
  Henckelia oblonga (D. Don) Spreng. -- not accepted
  Henckelia plicata (D. Don) Spreng. -- not accepted
  Henckelia primulifolia (D. Don) Spreng. -- not accepted
  Henckelia racemosa (Jack) Spreng. -- accepted
  Henckelia reptans (Jack) Spreng. -- accepted
  Henckelia reptans var. reptans (Jack) Spreng. -- accepted
  Henckelia villosa (D. Don) Spreng. -- not accepted
  Heterotrichum cymosum (Wendl. ex Spreng.) Urb. -- not accepted -- camasey terciopelo
  Hibiscus poeppigii (Spreng.) Garcke -- accepted -- Poeppig's rosemallow
  Hieracium triste Willd. ex Spreng. -- accepted -- low alpine hawkweed, slender hawkweed, woolly hawkweed
  Hieracium triste var. triste Willd. ex Spreng. -- not accepted -- woolly hawkweed
  Hybanthus concolor (T.F. Forst.) Spreng. -- accepted -- eastern greenviolet, nodding violet
  Hygrophila brasiliensis (Spreng.) Lindau -- not accepted -- yerba de hicotea
  Hygrophila ringens (L.) R. Br. ex Spreng. -- accepted
  Hymenachne auriculata (Willd. ex Spreng.) Chase -- not accepted
  Hymenachne pernambucensis (Spreng.) Zuloaga -- accepted
  Hypolytrum berteroi Spreng. -- not accepted
  Ichnanthus leiocarpus (Spreng.) Kunth -- accepted
  Ichnanthus leiocarpus var. leiocarpus (Spreng.) Kunth -- not accepted
  Ilysanthes attenuata (Spreng.) Small -- not accepted
  Incarvillea grandiflora (Thunb.) Spreng. -- not accepted
  Indigofera jamaicensis Spreng. -- not accepted
  Indigofera mucronata Spreng. ex DC. -- not accepted
  Ipomoea meyeri (Spreng.) G. Don -- accepted -- Meyer's morning-glory, Meyer's morningglory
  Ischaemopogon latifolius (Spreng.) Griseb. -- not accepted
  Ischaemum latifolium (Spreng.) Kunth -- accepted
  Jacquinia berteroi Spreng. -- accepted -- bois bande
  Jaquinia berteri Spreng. -- not accepted
  Jarava megapotamica (Spreng.) Peńailillo -- accepted
  Jarava plumosa (Spreng.) S.W.L. Jacobs & J. Everett -- accepted -- South American rice grass
  Julocroton fuscescens (Spreng.) Baill. -- not accepted
  Jungermannia sessilis Spreng. -- not accepted
  Jussiaea repens var. montevidensis (Spreng.) Munz -- not accepted
  Kochia atriplicifolia (Spreng.) Roth -- not accepted
  Koeleria avenacea (Kunth) Spreng. -- not accepted
  Koeleria cristata var. glauca (Spreng.) G. Mey. -- not accepted
  Koeleria glauca (Spreng.) DC. -- accepted
  Koeleria macrantha ssp. glauca (Spreng.) P.D. Sell -- not accepted
  Koeleria pennsylvanica (Spreng.) DC. -- not accepted
  Koeleria pulchella (Kunth) Spreng. -- not accepted
  Lantana montevidensis (Spreng.) Briq. -- accepted -- trailing shrubverbena
  Lappago aliena Spreng. -- not accepted
  Lejeunea hookeri (Sm.) Spreng. -- not accepted
  Leonurus cardiaca ssp. villosus (Desf. ex Spreng.) Hyl. -- not accepted -- common motherwort
  Leonurus cardiaca var. villosus (Desf. ex Spreng.) Benth. -- not accepted
  Leptochilus cladorrhizans (Spreng.) Maxon -- not accepted
  Libertia Spreng. -- accepted -- libertia
  Linaria incarnata (Vent.) Spreng. -- accepted -- crimson toadflax
  Lippia montevidensis Spreng. -- not accepted
  Lithospermum mandanense Spreng. -- not accepted
  Lonicera involucrata (Richardson) Banks ex Spreng. -- accepted -- bearberry honeysuckle, twinberry honeysuckle
  Lonicera involucrata var. involucrata (Richardson) Banks ex Spreng. -- accepted -- twinberry honeysuckle
  Ludwigia peploides ssp. montevidensis (Spreng.) P.H. Raven -- accepted -- floating primrose-willow
  Ludwigia peploides var. montevidensis (Spreng.) Shinners -- not accepted
  Luzula nivalis (Laest.) Spreng. -- accepted
  Lycurus muticus Spreng. -- not accepted
  Lythrum tribracteatum Salzm. ex Spreng. -- accepted -- threebract loosestrife
  Malpighia setosa Spreng. -- accepted -- bristly stingingbush
  Maxillaria purpurea (Spreng.) Ames & Correll -- not accepted -- purple tiger orchid
  Megalodonta beckii (Torr. ex Spreng.) Greene -- not accepted -- Beck's watermarigold
  Megalodonta beckii var. beckii (Torr. ex Spreng.) Greene -- not accepted -- Beck's watermarigold
  Melica fischeri (R. Br.) Spreng. -- not accepted
  Melothria guadalupensis (Spreng.) Cogn. -- not accepted
  Menziesia aleutica Spreng. -- not accepted
  Merostachys Spreng. -- accepted
  Merostachys speciosa Spreng. -- accepted
  Milium cuspidatum (Nutt.) Spreng. -- not accepted
  Milium mexicanum Spreng. -- not accepted
  Milium natans Spreng. -- not accepted
  Milium polystachyon (Kunth) Spreng. -- not accepted
  Momordica cochinchinensis (Lour.) Spreng. -- accepted -- balsampear
  Montia chamissoi (Ledeb. ex Spreng.) Greene -- accepted -- toadlily, water Indianlettuce, water miner's lettuce, water minerslettuce
  Muhlenbergia spicata (Spreng.) Kunth -- not accepted
  Murraya koenigii (L.) Spreng. -- accepted -- curryleaftree
  Myriopus poliochros (Spreng.) Small -- accepted
  Najas guadalupensis (Spreng.) Magnus -- accepted -- common waternymph, Guadalupe waternymph, naďade de la Guadeloupe, southern naiad, southern waternymph
  Najas guadalupensis ssp. guadalupensis (Spreng.) Magnus -- accepted -- Guadalupe waternymph, southern waternymph
  Nassella megapotamia (Spreng. ex Trin.) Barkworth -- accepted
  Nastus guadua (Bonpl.) Spreng. -- not accepted
  Nastus latifolia (Bonpl.) Spreng. -- not accepted
  Nazia aliena (Spreng.) Scribn. -- not accepted
  Nazia racemosa var. aliena (Spreng.) Scribn. & J.G. Sm. -- not accepted
  Nelsonia canescens (Lam.) Spreng. -- accepted -- blue pussyleaf
  Nematanthus dichrus (Spreng.) Wiehler -- not accepted
  Nepeta mussinii Spreng. ex Henckel -- not accepted -- Persian catmint
  Nephelea portoricensis (Spreng. ex Kuhn) R.M. Tryon -- not accepted
  Oedera trinervia Spreng. -- not accepted
  Oenothera cheiranthifolia Hornem. ex Spreng. -- not accepted
  Oenothera laciniata ssp. pubescens (Willd. ex Spreng.) Munz -- not accepted
  Oenothera laciniata var. pubescens (Willd. ex Spreng.) Munz -- not accepted
  Oenothera micrantha Hornem. ex Spreng. -- not accepted
  Oenothera pubescens Willd. ex Spreng. -- accepted -- silky evening primrose, South American evening primrose, South American evening-primrose, South American eveningprimrose
  Olyra brasiliensis (Bertol.) Spreng. -- not accepted
  Onobrychis tanaitica Spreng. -- not accepted
  Oplismenus cubensis (Spreng.) Kunth -- not accepted
  Orthiopteris domingensis (Spreng.) Copel. -- not accepted
  Orthopogon crus-galli (L.) Spreng. -- not accepted
  Orthopogon cubensis Spreng. -- not accepted
  Orthopogon echinatus (Willd.) Spreng. -- not accepted
  Orthopogon hispidus Spreng. -- not accepted
  Orthopogon holciformis (Kunth) Spreng. -- not accepted
  Orthopogon loliaceus (Lam.) Spreng. -- not accepted
  Orthopogon setarius (Lam.) Spreng. -- not accepted
  Orthopogon stagninus (Retz.) Spreng. -- not accepted
  Orthopogon undulatifolius (Ard.) Spreng. -- not accepted
  Orthopogon velutinus (G. Mey.) Spreng. -- not accepted
  Oryzopsis montevidensis (Spreng.) Hauman -- not accepted
  Oryzopsis montevidensis (Spreng.) Speg. -- not accepted
  Pachyrhizus tuberosus (Lam.) Spreng. -- accepted -- ajipo
  Pandanus dubius Spreng. -- accepted -- bakong, pandanus
  Panicularia elongata (Spreng.) Kuntze -- not accepted
  Panicularia torreyana (Spreng.) Merr. -- not accepted
  Panicum acutifolium Willd. ex Spreng. -- not accepted
  Panicum agrostoides Spreng. -- not accepted
  Panicum aquaticum Bosc ex Spreng. -- not accepted
  Panicum ascendens Willd. ex Spreng. -- not accepted
  Panicum auriculatum Willd. ex Spreng. -- not accepted
  Panicum autumnale Bosc ex Spreng. -- not accepted
  Panicum brachiatum Bosc ex Spreng. -- not accepted
  Panicum brasiliense Spreng. -- not accepted
  Panicum carolinianum Spreng. -- not accepted
  Panicum cernuum (Kunth) Willd. ex Spreng. -- not accepted
  Panicum cubense (Spreng.) Steud. -- not accepted
  Panicum dasytrichum Spreng. -- not accepted
  Panicum densiflorum Willd. ex Spreng. -- not accepted
  Panicum distans Willd. ex Spreng. -- not accepted
  Panicum distichophyllum (Spreng.) Nees -- not accepted
  Panicum excelsum Spreng. ex Steud. -- not accepted
  Panicum georgicum Spreng. -- not accepted
  Panicum guadaloupense Spreng. ex Steud. -- not accepted
  Panicum hirticalycum Bosc ex Spreng. -- not accepted
  Panicum lagopus Willd. ex Spreng. -- not accepted
  Panicum lanuginosum Bosc ex Spreng. -- not accepted
  Panicum lappaceum Willd. ex Spreng. -- not accepted
  Panicum leiocarpon Spreng. -- not accepted
  Panicum megapotamicum Spreng. -- not accepted
  Panicum montevidense Spreng. ex Döll -- not accepted
  Panicum muhlenbergii Spreng. -- not accepted
  Panicum nigricans Willd. ex Spreng. -- not accepted
  Panicum orinocense Willd. ex Spreng. -- not accepted
  Panicum pernambucense (Spreng.) Mez ex Pilg. -- not accepted
  Panicum platense (Spreng.) Kuntze -- not accepted
  Panicum pulchrum Willd. ex Spreng. -- not accepted
  Panicum pulcrum Willd. ex Spreng. -- not accepted
  Panicum racemosum (P. Beauv.) Spreng. -- accepted
  Panicum rigidulum Bosc ex Spreng. -- not accepted
  Panicum rottleri (Spreng.) Nees -- not accepted
  Panicum rugosum Bosc ex Spreng. -- not accepted
  Panicum streptostachys Spreng. -- not accepted
  Panicum subulatum Spreng. -- accepted
  Panicum subuniflorum Bosc ex Spreng. -- not accepted
  Panicum tectum Willd. ex Spreng. -- not accepted
  Panicum tremulum Spreng. -- not accepted
  Panicum unbraculum Bosc ex Spreng. -- not accepted
  Panicum velutinum Bosc ex Spreng. -- not accepted
  Pappophorum elongatum Spreng. -- not accepted
  Pappophorum megapotamicum Spreng. -- not accepted
  Pariana angustifolia Spreng. -- not accepted
  Parnassia kotzebuei Cham. ex Spreng. -- accepted -- Kotzebue's grass of Parnassus, Kotzebue's grass-of-Parnassus
  Parodia scopa (Spreng.) N.P. Taylor -- accepted
  Parodia scopa ssp. scopa (Spreng.) Hofacker -- accepted
  Paronychia virginica Spreng. -- accepted -- Virginia nailwort, yellow nailwort
  Paronychia virginica var. virginica Spreng. -- not accepted -- silvery nailwort
  Parosela lanata (Spreng.) Britton -- not accepted
  Paspalum brasiliense (Spreng.) Hack. -- not accepted
  Paspalum cubense Spreng. -- not accepted
  Paspalum lanatum Spreng. -- not accepted
  Paspalum laticulmum Spreng. -- not accepted
  Paspalum latifolium Spreng. -- not accepted
  Paspalum marginatum Spreng. ex Steud. -- not accepted
  Paspalum meyerianum Spreng. -- not accepted
  Paspalum miliare Spreng. -- not accepted
  Paspalum montevidense Spreng. -- not accepted
  Paspalum papillosum Spreng. -- not accepted
  Paspalum pilosum Spreng. ex Steud. -- not accepted
  Paspalum platense Spreng. -- not accepted
  Paspalum plicatulum ssp. montevidense (Spreng.) Roseng., B.R. Arrill. & Izag. -- not accepted
  Paspalum selloi Spreng. ex Nees -- not accepted
  Paspalum strictum Spreng. ex Steud. -- not accepted
  Paspalum superbum Spreng. -- not accepted
  Pedicularis romanzovii Cham. ex Spreng. -- not accepted
  Pedilanthus carinatus (Donn) Spreng. -- not accepted
  Pedilanthus cordatus Spreng. -- not accepted
  Pelexia adnata (Sw.) Spreng. -- accepted -- hachuela, Spiranthes adnada
  Peltophorum dubia (Spreng.) Taub. -- not accepted -- horsebush
  Peltophorum dubium (Spreng.) Taub. -- accepted -- copperpod, horsebush
  Pennisetum alopecuroides (L.) Spreng. -- not accepted -- Chinese fountaingrass
  Pennisetum crinitum (Kunth) Spreng. -- not accepted
  Pennisetum domingense (Spreng. ex Schult.) Spreng. -- not accepted
  Pennisetum latifolium Spreng. -- not accepted -- Uruguayan fountaingrass
  Pennisetum myosuroides (Kunth) Spreng. -- not accepted
  Pennisetum rufescens (Desf.) Spreng. -- not accepted
  Pennisetum tristachyon Spreng. -- not accepted
  Pennisetum tristachyum (Kunth) Spreng. -- not accepted
  Persea borbonia (L.) Spreng. -- accepted -- redbay
  Persea borbonia var. borbonia (L.) Spreng. -- not accepted
  Petalostemon compactus (Spreng.) Swezey -- not accepted
  Phalaris laxa Spreng. ex Steud. -- not accepted
  Phalaris variegata Spreng. -- not accepted
  Pharus pubescens Spreng. -- not accepted
  Phoradendron anceps (Spreng.) M. Gómez -- accepted -- goldenfruit mistletoe, island mistletoe
  Phoradendron dichotomum (Bertero ex Spreng.) Krug & Urb. -- not accepted -- Bertero's mistletoe
  Phyla nodiflora var. repens (Spreng.) Moldenke -- not accepted
  Phyllanthus polygonoides Nutt. ex Spreng. -- accepted -- knotweed leaflower, smartweed leaf-flower, smartweed leafflower
  Phyllodoce aleutica (Spreng.) Heller -- accepted -- Aleutian mountain heath, Aleutian mountainheath
  Piaropus paniculatus (Spreng.) Small -- not accepted
  Piper blattarum Spreng. -- accepted -- moth pepper
  Piperia unalascensis (Spreng.) Rydb. -- not accepted -- Alaska bog orchid, Alaska rein orchid, Alaskan rein-orchid, Piperia de Alaska, pipérie d'Unalaska, slender-spire orchid
  Piptatherum mexicanum (Spreng.) Schult. -- not accepted
  Piptochaetium montevidense (Spreng.) Herter -- not accepted
  Piptochaetium montevidense (Spreng.) Parodi -- accepted
  Pisonia discolor Spreng. -- not accepted
  Platanthera unalascensis (Spreng.) Kurtz -- accepted
  Plectranthus amboinicus (Lour.) Spreng. -- accepted -- Mexican mint
  Plectranthus rotundifolius (Poir.) Spreng. -- accepted
  Pleopeltis revoluta (Spreng. ex Willd.) A.R. Sm. -- not accepted
  Poa arenaria Willd. ex Spreng. -- not accepted
  Poa atrovirens Willd. ex Spreng. -- not accepted
  Poa brasiliensis Spreng. -- not accepted
  Poa elliottii Spreng. -- not accepted
  Poa elongata Torr. ex Spreng. -- not accepted
  Poa nuttallii Spreng. -- not accepted
  Poa purpurascens Spreng. -- not accepted
  Poa tephrosanthos Spreng. ex Schult. -- not accepted
  Poa torreyana Spreng. -- not accepted
  Poa uliginosa Willd. ex Spreng. -- not accepted
  Pohlia ludwigii (Spreng. ex Schwaegr.) Broth. -- accepted -- Ludwig's pohlia moss
  Pollinia Spreng. -- not accepted
  Pollinia brevifolia (Sw.) Spreng. -- not accepted
  Pollinia ciliaris (P. Beauv.) Spreng. -- not accepted
  Pollinia fastigiata (Sw.) Spreng. -- not accepted
  Pollinia fulva Spreng. -- not accepted
  Pollinia monandra Spreng. -- not accepted
  Pollinia scoparia (Michx.) Spreng. -- not accepted
  Pollinia vaginata Spreng. -- not accepted
  Polypodium chnoodes Spreng. -- not accepted
  Polypogon alpestris (Kunth) Spreng. -- not accepted
  Polypogon ciliatus (Kunth) Spreng. -- not accepted
  Polypogon filiformis Spreng. ex Schult. -- not accepted
  Polypogon gracilis Spreng. -- not accepted
  Polypogon pauciflorus Spreng. -- not accepted
  Polypogon sericeus (Michx.) Spreng. -- not accepted
  Polypogon spicatus Spreng. -- not accepted
  Polypogon tenellus (Kunth) Spreng. -- not accepted
  Prestonia quinquangularis (Jacq.) Spreng. -- accepted
  Prosopis stephaniana (M. Bieb.) Kunth ex Spreng. -- not accepted
  Pseudocryphaea domingensis (Spreng.) Buck -- accepted -- Domingan pseudocryphaea moss
  Psychotria brownei Spreng. -- not accepted -- Browne's wild coffee
  Pulsatilla nuttalliana (DC.) Spreng. -- not accepted
  Pyrus americana (Marshall) Spreng. -- not accepted
  Pyrus microcarpa (Pursh) Spreng. -- not accepted
  Radicula portoricensis (Spreng.) Britton -- not accepted
  Ranunculus platensis Spreng. -- accepted -- prairie buttercup
  Reboulea pensylvanica (Spreng.) A. Gray -- not accepted
  Reimaria brasiliensis (Spreng.) Schltr. -- not accepted
  Reimaria diffusa Spreng. -- not accepted
  Reimarochloa brasiliensis (Spreng.) Hitchc. -- not accepted
  Reynaudia filiformis (Spreng. ex Schult.) Kunth -- accepted
  Rheedia acuminata (Spreng.) Triana & Planch. -- not accepted
  Rhexia virginica var. purshii (Spreng.) C.W. James -- not accepted
  Rhynchosia malacophylla (Spreng.) Bojer -- accepted
  Rhynchospora berteroi (Spreng.) C.B. Clarke -- accepted -- little beaksedge
  Rhynchospora radicans ssp. microcephala (Bertero ex Spreng.) W.W. Thomas -- accepted -- tropical whitetop
  Rhynchospora tenerrima Nees ex Spreng. -- accepted -- soldier beaksedge
  Rondeletia inermis (Spreng.) Krug & Urb. -- accepted -- cordobancillo
  Rorippa portoricensis (Spreng.) Stehlé -- accepted -- Puerto Rico yellowcress
  Rosa lindleyi Spreng. -- not accepted
  Rottboellia paniculata (Nutt.) Spreng. -- not accepted
  Rottlera brasiliensis Spreng. -- not accepted
  Ruellia brasiliensis Spreng. -- not accepted
  Saccharum baldwinii Spreng. -- accepted -- narrow plumegrass
  Saccharum ternatum Spreng. -- not accepted
  Saccoloma domingense (Spreng.) C. Chr. -- accepted -- Caribbean soralpouch fern
  Salix purshiana Spreng. -- not accepted
  Sarcomphalus domingensis (Spreng.) Krug & Urb. -- not accepted
  Schizachyrium domingense (Spreng. ex Schult.) Nash -- not accepted
  Schizachyrium gracile (Spreng.) Nash -- not accepted -- wire bluestem
  Schizachyrium gracile var. gracile (Spreng.) Nash -- not accepted
  Schizachyrium sanguineum subvar. domingense (Spreng. ex Schult.) Roberty -- not accepted
  Schizachyrium scoparium subvar. gracile (Spreng.) Roberty -- not accepted
  Schizachyrium spicatum (Spreng.) Herter -- accepted
  Schizachyrium spicatum var. spicatum (Spreng.) Herter -- not accepted
  Schizopogon Rchb. ex Spreng. -- not accepted
  Schultesia Spreng. -- not accepted
  Schultesia petraea (Sw.) Spreng. -- not accepted
  Scirpus nanus Spreng. -- not accepted
  Scleropoa memphitica (Spreng.) Parl. -- not accepted
  Scoparia montevidensis (Spreng.) R.E. Fries -- accepted -- broomwort
  Scutellaria elliptica Muhl. ex Spreng. -- accepted -- hairy skullcap
  Scutellaria elliptica var. elliptica Muhl. ex Spreng. -- accepted -- hairy skullcap
  Sebastiania Spreng. -- accepted -- Sebastian-bush
  Selloa glutinosa Spreng. -- not accepted
  Senecio cacalioides Fisch. ex Spreng. -- not accepted
  Senecio valerianifolius Link ex Spreng. -- not accepted
  Sesleria quitensis Spreng. -- not accepted
  Setaria elongata Spreng. ex Schult. -- not accepted
  Setaria rottleri Spreng. -- not accepted
  Setaria vaginata Spreng. -- accepted
  Setaria vaginata var. vaginata Spreng. -- accepted
  Smilax coriacea Spreng. -- accepted -- Everglades greenbrier
  Solanum hirtellum (Spreng.) Hassl. -- accepted
  Solanum laxum Spreng. -- accepted
  Solanum viride Spreng. -- accepted -- green nightshade
  Sorghum gracile (Spreng.) Kuntze -- not accepted
  Spiranthes unalascensis Spreng. -- not accepted
  Spodiopogon latifolius (Spreng.) Nees -- not accepted
  Sporobolus sporobolus (Spreng.) Kuntze -- not accepted
  Sporobolus villosus (Rchb. ex Spreng.) Kunth -- not accepted
  Stenorrhynchos Rich. ex Spreng. -- accepted -- ladies'-tresses, lady orchid
  Stenorrhynchos speciosum (Jacq.) Rich. ex Spreng. -- accepted -- Latin American ladies'-tresses, Latin American lady orchid
  Stenorrhynchos speciosus (Jacq.) Rich. ex Spreng. -- not accepted
  Stenorrhynchos squamulosum (Kunth) Spreng. -- not accepted
  Sternbergia lutea (L.) Ker Gawl. ex Spreng. -- accepted -- winter daffodil
  Steyermarkochloa angustifolia (Spreng.) Judz. -- accepted
  Stipa megapotamia Spreng. ex Trin. -- not accepted
  Streptachne domingensis Spreng. ex Schult. -- not accepted
  Streptocarpus wendlandii Spreng. -- accepted
  Symphyotrichum expansum (Poepp. ex Spreng.) G.L. Nesom -- not accepted -- southwestern annual saltmarsh aster
  Symphyotrichum squamatum (Spreng.) G.L. Nesom -- not accepted -- southeastern annual saltmarsh aster
  Symphyotrichum subulatum var. squamatum (Sprengel) S.D. Sundb. -- accepted -- southeastern annual saltmarsh aster
  Tabebuia haemantha (Bertol. ex Spreng.) DC. -- accepted -- roble cimarron
  Tabernaemontana oppositifolia (Spreng.) Urb. -- accepted
  Talasium Spreng. -- not accepted
  Talasium montevidense Spreng. -- not accepted
  Tectaria martinicensis (Spreng.) Copel. -- not accepted
  Teramnus labialis (L. f.) Spreng. -- accepted -- blue wiss
  Thalasium montevidense Spreng. -- not accepted
  Thalictrum polygamum Muhl. ex Spreng. -- not accepted
  Thelepogon sanguineus (Retz.) Spreng. -- not accepted
  Thelesperma megapotamicum (Spreng.) Kuntze -- accepted -- green threads, Hopi tea greenthread
  Thelypteris balbisii (Spreng.) Ching -- accepted -- Balbis' maiden fern
  Thelypteris balbisii var. balbisii (Spreng.) Ching -- accepted -- Balbis' maiden fern
  Thelypteris sclerophylla (Poepp. ex Spreng.) C.V. Morton -- accepted -- stiff maiden fern
  Theobroma grandiflorum (Willd. ex Spreng.) K. Schum. -- accepted -- theobroma
  Tithymalus lagascae (Spreng.) Klotzsch & Garcke -- not accepted
  Tithymalus rothianus (Spreng.) Klotzsch & Garcke -- not accepted
  Torrubia discolor (Spreng.) Britton -- not accepted
  Tournefortia microphylla Bertol. ex Spreng. -- not accepted
  Tournefortia poliochros Spreng. -- not accepted
  Tragus alienus (Spreng.) Schult. -- not accepted
  Trichochloa spicata (Spreng.) Schult. -- not accepted
  Trichodium noveboracense (Spreng.) Schult. -- not accepted
  Trichophorum planifolium (Spreng.) Palla -- accepted -- bashful bulrush
  Trichopteris Spreng. -- not accepted
  Trifolium billardierei Spreng. -- accepted -- Labillardiere's clover
  Trifolium mucronatum Willd. ex Spreng. -- accepted -- cusp clover
  Trifolium mucronatum ssp. mucronatum Willd. ex Spreng. -- accepted
  Trifolium mucronatum var. mucronatum Willd. ex Spreng. -- not accepted
  Trifolium willdenovii Spreng. -- accepted -- tomcat clover
  Trifolium willdenowii Spreng. -- not accepted -- tomcat clover
  Triodia greenii Spreng. -- not accepted
  Triodia melicoides (Michx.) Spreng. -- not accepted
  Triodia pallida (Torr.) Spreng. -- not accepted
  Trisetum pensylvanicum (Spreng.) Trin. -- not accepted
  Triticum bonaepartis Spreng. -- not accepted
  Triticum geminatum Spreng. -- not accepted
  Triticum missuricum Spreng. -- not accepted
  Verbena montevidensis Spreng. -- accepted -- Uruguayan vervain
  Verbena rigida Spreng. -- accepted -- tuberous vervain
  Verbena tenera Spreng. -- not accepted
  Veronica grandis Fisch. ex Spreng. -- accepted -- heartleaf speedwell
  Viburnum japonicum (Thunb.) Spreng. -- accepted
  Vicia menziesii Spreng. -- accepted -- Hawai'i vetch, Hawaiian vetch, Hawaiian wild broad-bean
  Vicia michauxii Spreng. -- accepted
  Viguiera dentata (Cav.) Spreng. -- accepted -- sunflower goldeneye, toothleaf goldeneye
  Viguiera dentata var. dentata (Cav.) Spreng. -- accepted -- toothleaf goldeneye
  Viscum anceps Spreng. -- not accepted
  Viscum dichotomum Bertero ex Spreng. -- not accepted
  Woodsia obtusa (Spreng.) Torr. -- accepted -- blunt-lobe woodsia, bluntlobe cliff fern, woodsie ŕ lobes arrondis
  Woodsia obtusa ssp. obtusa (Spreng.) Torr. -- accepted -- bluntlobe cliff fern
  Xamesike depressa (Torr. ex Spreng.) Raf. -- not accepted
  Xanthocephalum glutinosum (Spreng.) Shinners -- not accepted
  Zantedeschia Spreng. -- accepted -- calla lily
  Zantedeschia aethiopica (L.) Spreng. -- accepted -- calla lily
  Zygophyllidium hexagonum (Nutt. ex Spreng.) Small -- not accepted
 
 Kingdom Bacteria
  Coccochloris Sprengel, 1807 -- valid
 
 Kingdom Archaea
  Methanimicrococcus Sprenger et al., 2000 -- valid
  Methanimicrococcus blatticola Sprenger et al., 2000 -- valid
   

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