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Taxon author: Underw.

ITIS records citing taxon author "Underw."
 
 Kingdom Animalia
  Amazilia alfaroana Underwood, 1896 -- valid
  Anolis grahami aquarum Underwood and Williams, 1959 -- valid
  Anolis lineatopus ahenobarbus Underwood and Williams, 1959 -- valid
  Anolis lineatopus merope Underwood and Williams, 1959 -- valid
  Anolis reconditus Underwood and Williams, 1959 -- valid -- Blue Mountains Anole
  Celestus microblepharis (Underwood, 1959) -- valid -- Small-eyed Galliwasp, Tiny Eyelid Galliwasp
  Chlorospingus canigularis olivaceiceps Underwood, 1898 -- valid
  Clelia errabunda Underwood, 1993 -- valid -- Underwood's Mussurana
  Diploglossus microblepharis Underwood, 1959 -- invalid
  Diploglossus montisserrati Underwood, 1964 -- valid -- Montserrat Galliwasp
  Eucorethra underwoodi Underwood, 1903 -- valid
  Pseudomagnivitellum Dronen and Underwood, 1980 -- valid
  Tropidonophis aenigmaticus Malnate and Underwood, 1988 -- valid -- East Papuan Keelback
  Tropidonophis mcdowelli Malnate and Underwood, 1988 -- valid -- Northern New Guinea Keelback
  Tropidonophis parkeri Malnate and Underwood, 1988 -- valid -- Highland Keelback
  Tropidonophis statisticus Malnate and Underwood, 1988 -- valid -- Papua New Guinea Montane Keelback
 
 Kingdom Plantae
  Adiantum capillus-veneris var. modestum (Underw.) Fernald -- not accepted
  Adiantum modestum Underw. -- not accepted
  Alsophila cubensis (Underw. ex Maxon) Caluff & Shelton -- not accepted
  Ananthacorus Underw. & Maxon ex Maxon -- not accepted
  Ananthacorus angustifolius (Sw.) Underw. & Maxon -- not accepted
  Anisosorus hirsutus (L.) Underw. & Maxon ex Maxon -- not accepted
  Asplenium goldmanii Underw. -- not accepted
  Asplenium goldmanii Underw. -- not accepted
  Asplenium goldmannii Underw. -- not accepted
  Asplenium verecundum Chapm. ex Underw. -- not accepted -- limestone spleenwort
  Asplenium X curtissii Underw. (pro sp.) -- accepted -- Curtiss' spleenwort
  Asterella africana (Mont.) Underw. ex A. Evans -- accepted
  Asterella bolanderi (Austin) Underw. -- accepted -- Bolander's asterella
  Asterella californica (Hampe ex Austin) Underw. -- accepted -- California asterella
  Asterella echinella (Gottsche) Underw. -- accepted -- elegant asterella
  Asterella gracilis (F. Weber) Underw. -- not accepted -- graceful asterella
  Asterella ludwigii (Schwgr.) Underw. ex A. Evans -- not accepted
  Asterella palmeri (Austin) Underw. -- accepted -- Palmer's asterella
  Asterella pringlei Underw. -- accepted
  Astrella ludwigii (Schwgr.) Underw. ex A. Evans -- not accepted
  Bommeria hispida (Mett. ex Kuhn) Underw. -- accepted -- copper fern
  Botrychium biternatum (Savigny) Underw. -- accepted -- southern grapefern, sparse-lobed grapefern, sparselobe grapefern
  Botrychium californicum Underw. -- not accepted
  Botrychium coulteri Underw. -- not accepted
  Botrychium dissectum var. tenuifolium (Underw.) Farw. -- not accepted
  Botrychium jenmanii Underw. -- accepted -- Alabama grapefern, Dixie grapefern
  Botrychium lunaria var. onondagense (Underw.) House -- not accepted
  Botrychium multifidum ssp. californicum (Underw.) R.T. Clausen -- not accepted
  Botrychium multifidum ssp. coulteri (Underw.) R.T. Clausen -- not accepted
  Botrychium multifidum var. californicum (Underw.) M. Broun -- not accepted
  Botrychium multifidum var. coulteri (Underw.) M. Broun -- not accepted
  Botrychium onondagense Underw. -- not accepted
  Botrychium pumicola Coville ex Underw. -- accepted -- Crater Lake grape fern, Crater Lake grapefern, pumice moonwort
  Botrychium silaifolium var. coulteri (Underw.) Jeps. -- not accepted
  Carex oxylepis var. pubescens J.K. Underw. -- not accepted -- sharpscale sedge
  Cheilanthes X fibrillosa (Davenp.) Davenp. ex Underw. (pro. sp.) -- accepted -- fibril lipfern, fibrillose lip fern
  Cryptomitrium Austin ex Underw. -- accepted
  Cryptomitrium tenerum (Hook.) Austin ex Underw. -- accepted
  Cyathea caracasana var. maxonii (Underw.) R.M. Tryon -- accepted
  Cyathea cubensis Underw. ex Maxon -- accepted
  Cyathea harrisii Underw. ex Maxon -- accepted
  Cyathea woodwardioides var. cubensis (Underw. ex Maxon) -- not accepted
  Cyrtomium auriculatum (Underw.) C.V. Morton -- not accepted
  Cyrtomium umbonatum (Underw.) C.V. Morton -- not accepted
  Danaea grandifolia Underw. -- accepted
  Danaea jamaicensis Underw. -- not accepted -- Jamaican danafern
  Danaea jenmanii Underw. -- accepted -- Puerto Rico danafern
  Danaea mazeana Underw. -- accepted
  Dicranopteris flexuosa (Schrad.) Underw. -- accepted -- drooping forkedfern, forked fern, net fern
  Dicranopteris linearis (Burm. f.) Underw. -- accepted -- Old World forkedfern, uluhe
  Dicranopteris linearis var. linearis (Burm. f.) Underw. -- not accepted -- Old World forkedfern
  Dicranopteris pectinata (Willd.) Underw. -- accepted -- comb forkedfern
  Dryopteris cristata var. clintoniana (D.C. Eaton) Underw. -- not accepted
  Dryopteris glabra var. nuda (Underw.) Fraser-Jenk. -- accepted
  Dryopteris nevadensis (Baker) Underw. -- not accepted
  Dryopteris nuda Underw. -- not accepted -- dry land woodfern
  Dryopteris patula (Sw.) Underw. -- accepted
  Dryopteris spinulosa var. dilatata auct. non (Hoffm.) Underw. -- not accepted
  Dryopteris spinulosa var. intermedia (Muhl. ex Willd.) Underw. -- not accepted
  Dryopteris X boottii (Tuck.) Underw. (pro sp.) -- accepted -- Boott's woodfern
  Elaphoglossum dussii Underw. ex Maxon -- not accepted
  Elaphoglossum maxonii Underw. ex C.V. Morton -- accepted -- Maxon's tonguefern
  Elaphoglossum palmeri Underw. & Maxon -- accepted
  Elaphoglossum petiolatum var. dussii (Underw. ex Maxon) Proctor -- accepted -- Duss' tonguefern
  Filix bulbifera (L.) Underw. -- not accepted
  Filix fragilis (L.) Underw. -- not accepted
  Filix montana (Lam.) Underw. -- not accepted
  Frullania californica (Austin ex Underw.) A. Evans -- accepted
  Gymnopteris hispida (Mett. ex Kuhn) Underw. -- not accepted
  Huperzia montana (Underw. & F.E. Lloyd) Holub -- accepted
  Huperzia porophila (Lloyd & Underw.) Holub -- accepted -- rock clubmoss
  Huperzia selago var. porophila (Lloyd & Underw.) . Lve & D. Lve -- not accepted
  Huperzia tenuicaulis (Underw. & Lloyd) B. llg. -- accepted -- narrowleaf clubmoss
  Huperzia wilsonii (Underw. & Lloyd) B. llg. -- accepted -- Wilson's clubmoss
  Isoetes echinospora ssp. maritima (Underw.) . Lve -- not accepted
  Isoetes echinospora var. maritima (Underw.) A.A. Eaton -- not accepted
  Isoetes maritima Underw. -- accepted -- maritime quillwort
  Isoetes muricata ssp. maritima (Underw.) Hultn -- not accepted
  Jungermannia bolanderi Gottsche ex Underw. -- not accepted
  Jungermannia danicola Gottsche ex Underw. -- not accepted
  Jungermannia rubra Gottsche ex Underw. -- not accepted
  Leptogramma pilosa sensu (M. Martens & Galeotti) Underw. -- not accepted
  Lomariopsis kunzeana (C. Presl ex Underw.) Holttum -- accepted -- hollyleaf fringedfern
  Lophidium poeppigianum (Sturm) Underw. ex Maxon -- not accepted
  Lycopodiella caroliniana var. meridionalis (Underw. & F.E. Lloyd) B. llg. & P.G. Windisch -- not accepted -- slender clubmoss
  Lycopodium adpressum (Chapm.) F.E. Lloyd & Underw. -- not accepted
  Lycopodium alopecuroides var. pinnatum (Chapm.) Lloyd & Underw. ex C.A. Brown & Correll -- not accepted
  Lycopodium appressum (Chapm.) F.E. Lloyd & Underw. -- not accepted
  Lycopodium carolinianum var. meridionale (Underw. & F.E. Lloyd) Nessel & Koehne -- not accepted
  Lycopodium chapmanii Underw. ex Maxon -- not accepted
  Lycopodium lucidulum var. porophilum (F.E. Lloyd & Underw.) Clute -- not accepted
  Lycopodium meridionale Underw. & F.E. Lloyd -- not accepted
  Lycopodium pinnatum (Chapm.) F.E. Lloyd & Underw. -- not accepted
  Lycopodium porophilum F.E. Lloyd & Underw. -- not accepted
  Lycopodium portoricense Underw. & F.E. Lloyd -- not accepted
  Lycopodium selago var. porophilum (F.E. Lloyd & Underw.) Clute -- not accepted
  Lycopodium tenuicaule Underw. & F.E. Lloyd -- not accepted
  Lycopodium wilsonii Underw. & F.E. Lloyd -- not accepted
  Marattia excavata Underw. -- accepted
  Marsupella bolanderi (Austin) Underw. -- accepted
  Nardia lescurii (Austin) Underw. -- accepted
  Nardia rubra (Gottsche ex Underw.) A. Evans -- not accepted
  Notholaena schaffneri (E. Fourn.) Underw. ex Davenp. -- accepted
  Odontoschisma macounii (Austin) Underw. -- accepted
  Phanerophlebia auriculata Underw. -- accepted -- eared veinfern
  Phanerophlebia umbonata Underw. -- accepted -- bellybutton veinfern
  Plectocolea rubra (Gottsche ex Underw.) A. Evans -- not accepted
  Polystichum lemmonii Underw. -- accepted -- Lemmon's hollyfern
  Polystichum mohrioides var. lemmonii (Underw.) Fernald -- not accepted
  Polystichum munitum var. incisoserratum (D.C. Eaton) Underw. -- not accepted
  Porella canariensis (F. Weber) Underw. -- accepted
  Porella wataugensis (Sull.) Underw. ex M. Howe -- accepted
  Pteridium aquilinum ssp. pubescens (Underw.) J.A. Thomson, Mickel & Mehlt. -- accepted -- hairy brackenfern, western bracken
  Pteridium aquilinum var. latiusculum (Desv.) Underw. ex A. Heller -- not accepted -- eastern bracken, northern bracken fern, western brackenfern
  Pteridium aquilinum var. pubescens Underw. -- not accepted -- eagle fern, hairy brackenfern, western bracken, western brackenfern
  Ptilidium californicum (Austin) Underw. & O.F. Cook -- accepted
  Riccia hirta (Austin) Underw. -- accepted
  Riella affinis M. Howe & Underw. -- accepted
  Riella americana M. Howe & Underw. -- accepted
  Selaginella acanthonota Underw. -- accepted -- spiny spikemoss
  Selaginella arenicola Underw. -- accepted -- sand spikemoss
  Selaginella arenicola ssp. acanthonota (Underw.) R.M. Tryon -- not accepted
  Selaginella arenicola ssp. arenicola Underw. -- accepted -- sand spikemoss
  Selaginella bigelovii Underw. -- accepted -- bushy spikemoss
  Selaginella mutica D.C. Eaton ex Underw. -- accepted -- bluntleaf spikemoss
  Selaginella mutica var. mutica D.C. Eaton ex Underw. -- accepted -- bluntleaf spikemoss
  Selaginella rupincola Underw. -- accepted -- clubmoss, rockloving spikemoss
  Selaginella watsonii Underw. -- accepted -- alpine spikemoss, Watson's spikemoss
  Solenostoma rubrum (Gottsche ex Underw.) R.M. Schust. -- accepted
  Stenochlaena kunzeana C. Presl ex Underw. -- not accepted
  Tectaria coriandrifolia (Sw.) Underw. -- accepted -- hairy halberd fern, Hattie Bauer's halberd fern
  Tectaria heracleifolia (Willd.) Underw. -- accepted -- broad halberd fern
  Tectaria minima Underw. -- not accepted
  Urostachys hippurideus var. montanus (Underw. & F.E. Lloyd) Herter ex Nessel -- not accepted
  Urostachys lucidulus var. porophilus (F.E. Lloyd & Underw.) Herter ex Nessel non Lam. -- not accepted
  Urostachys porophilus (F.E. Lloyd & Underw.) Herter ex Nessel -- not accepted
  Urostachys portoricensis (Underw. & F.E. Lloyd) Herter -- not accepted
  Urostachys tenuicaulis (Underw. & F.E. Lloyd) Herter -- not accepted
  Urostachys wilsonii (Underw. & F.E. Lloyd) Herter -- not accepted
 
 Kingdom Chromista
  Navicula pargemina Underwood and Yallop -- accepted
   

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