Category talk:Eponyms of Thomas Jefferson Howell

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Edward Butts Howell, 1879-1952, Commissioner, Chinese Maritime Customs Service, Tianjin

Anemone howellii Jeffrey & W.W.Sm.
Campylotropis howellii Schindler
Indigofera howellii Craib & W.W.Sm.
Oxyspora howellii Jeffrey & W.W.Sm. ≡ Allomorphia howellii (Jeffrey & W.W.Sm.) Diels
Pilea howelliana Hand.-Mazz.

Sarah Ann (Ledger) Howell, c. 1882-1937 Honorary Ranger, New South Wales Wild Flowers and Native Plants Protection Act of 1927

Prostanthera howellae Blakely

Arthur Holmes Howell, 1872-1940, zoologist, U.S. Fish and Wildlife Service

Solidago howellii Wooton & Standl.

Thomas Jefferson Howell, 1824-1912, pioneer Oregon botanist

Aconitum howellii A.Nelson & J.F.Macbr. ≡ Aconitum columbianum var. howellii (A.Nelson & J.F.Macbr.) C.L.Hitchc.
Agoseris howellii Greene
Agrostis howellii Scribn.
Alopecurus howellii Vasey
Amsinckia howellii Brand
Antennaria howellii Greene ≡ Antennaria neglecta var. howellii (Greene) Cronquist ≡ Antennaria neglecta subsp. howellii (Greene) Hultén ≡ Antennaria neodioica subsp. howellii (Greene) R.J.Bayer
Arabis howellii S.Watson ≡ Arabis platysperma var. howellii (S.Watson) Jeps. ≡ Boechera howellii (S.Watson) Windham & Al-Shehbaz
Arenaria howellii S.Watson ≡ Alsinopsis howellii A.Heller ≡ Minuartia howellii Mattf. ≡ Sabulina howellii (S.Watson) Dillenb. & Kadereit
Aster howellii Kuntze
Calamagrostis howellii Vasey ≡ Deyeuxia howellii Vasey
Calandrinia howellii S.Watson ≡ Oreobroma howellii Howell ≡ Lewisia howellii B.L.Rob. ≡ Lewisia cotyledon var. howellii (S.Watson) Jeps.
Calochortus howellii S.Watson
Caltha leptosepala var. howellii Huth ≡ Caltha howellii Greene ≡ Caltha rotundifolia var. howellii (Huth) K.C.Davis ≡ Caltha biflora subsp. howellii (Huth) Abrams ≡ Caltha leposepala subsp. howellii (Huth) P.G.Smit
Camassia howellii S.Watson ≡ Quamasia howellii Coville
Carex howellii L.H.Bailey
Carum howellii J.M.Coult. & Rose ≡ Taeniopleurum howellii (J.M.Coult. & Rose) J.M.Coult. & Rose ≡ Atenia howellii (J.M.Coult. & Rose) Greene ≡ Perideridia howellii (J.M.Coult. & Rose) Mathias
Cirsium howellii Petr. ≡ Cirsium breweri subsp. howellii Petr.
Coptis occidentalis var. howellii Huth
Cryptantha howellii A.Nelson
Dimeresia howellii A.Gray ≡ Ereminula howellii Greene
Draba howellii S.Watson
Elymus howellii Scribn. & Merr.
Erigeron salsuginosus var. howellii A.Gray ≡ Erigeron howellii A.Gray
Erythronium howellii S.Watson
Festuca howellii Hack. ex Beal ≡ Festuca viridula var. howellii St.-Yves
Grindelia howellii Steyerm.
Haplopappus howellii A.Gray ≡ Pyrrocoma howellii Greene ≡ Haplopappus uniflorus subsp. howellii H.M.Hall ≡ Haplopappus uniflorus var. howellii (A.Gray) M.Peck ≡ Haplopappus inuloides var. howellii (A.Gray) B.Boivin
Hieracium howellii A.Gray
Lilium howellii I.M.Johnst.
Limnanthes howelliana Abrams
Melica bromoides var. howellii Scribn. ≡ Bromelica geyeri var. howellii Farw.
Microseris howellii A.Gray ≡ Scorzonella howellii Greene
Oxyacantha howellii Lunell ≡ Crataegus howellii Heiser ex Lunell
Pedicularis howellii A.Gray
Peucedanum howellii S.Watson ≡ Euryptera howellii J.M.Coult. & Rose ≡ Cogswellia howellii M.E.Jones ≡ Lomatium howellii (S.Watson) Jeps. ≡ Lomatium lucidum var. howellii (S.Watson) M.Hiroe
Poa howellii Vasey & Scribn. ≡ Poa bolanderi var. howellii M.E.Jones
Polygonum howellii Greene
Potentilla howellii Greene ≡ Horkelia howellii (Greene) Rydb.
Prunus demissa f. howellii Koehne
Ranunculus howellii Greene ≡ Ranunculus occidentalis var. howellii Greene
Ribes howellii Greene, nom. illeg. superfl.
Saxifraga howellii Greene ≡ Micranthes howellii (Greene) Small
Senecio howellii Greene
Streptanthus howellii S.Watson (1885) ≡ Cartiera howellii Greene
Thelypodium howellii S.Watson ≡ Streptanthus howellii M.E.Jones, (1895) illeg.hom. ≡ Thelypodiopsis howellii (S.Watson) O.E.Schulz
Trifolium howellii S.Watson
Velaea howellii J.M.Coult. & Rose ≡ Drudeophytum howellii (J.M.Coult. & Rose) J.M.Coult. & Rose ≡ Tauschia howellii (J.M.Coult. & Rose) J.F.Macbr., Rev. N. Amer. Umbell. 122 (1888).
Viola howellii A.Gray
[Bryophytes] Dicranum howellii Renauld & Cardot
Fontinalis howellii Renauld & Cardot ≡ Fontinalis kindbergii var. howellii (Renauld & Cardot) Barnes

Joseph Howell, 1830-1912, brother of Thomas Jefferson Howell
Astragalus howellii A.Gray ≡ Tium howellii Rydb.
Brodiaea howellii S.Watson (1879) ≡ Triteleia howellii Greene ≡ Hookera howellii Piper ≡ Brodiaea douglasii var. howellii (S.Watson) M.Peck ≡ Triteleia grandiflora var. howellii (S.Watson) Hoover
Sanicula howellii J.M.Coult. & Rose ≡ Sanicula crassicaulis var. howellii (J.M.Coult. & Rose) Mathias ≡ Sanicula × howellii (J.M.Coult. & Rose) R.H.Shan & Constance

Thomas Jefferson Howell & Joseph Howell

Howellia A.Gray
Isoetes howellii Engelm.
Montia howellii S.Watson ≡ Claytonia howellii (S.Watson) Piper ≡ Montiastrum howellii (S.Watson) Rydb. ≡ Maxia howellii (S.Watson) Ö.Nilsson
Phacelia howellii J.F.Macbr.

John Thomas Howell, 1903-1994, Curator of Botany, California Academy of Sciences

Howellanthus (Constance) Walden & R.Patt.
Howelliella Rothm. 
Johanneshowellia Reveal
Allium howellii Eastw.
Arctostaphylos howellii Eastw ≡ Arctostaphylos glandulosa var. howellii (Eastw.) J.E.Adams ex McMinn ≡ Arctostaphylos glandulosa subsp. howellii (Eastw.) P.V.Wells ≡ Arctostaphylos glandulosa f. howellii (Eastw.) P.V.Wells.
Astragalus johannis-howellii Barneby
Brodiaea howellii Eastw. (1938) illeg. hom.
Bursera howellii Standl.
Castilleja howellii Eastw.
Chenopodium howellii Benet-Pierce
Chorizanthe howellii Goodman
Cuscuta howelliana P.Rubtzoff
Cyperus howellii O'Neill & Ben.Ayers
Epilobium howellii Hoch
Eriogonum howellianum Reveal
Eriogonum howellii S.Stokes
Euphorbia howellii L.C.Wheeler
Jasminocereus howellii E.Y.Dawson ≡ Jasminocereus thouarsii subsp. howellii (E.Y.Dawson) Guiggi
Juncus howellii F.J.Herm.
Lepidium nitidum var. howellii C.L.Hitchc.
Linanthus nuttallii subsp. howellii T.W.Nelson & R.Patt. ≡ Leptosiphon nuttallii subsp. howellii (T.W.Nelson & R.Patt.) J.M.Porter & L.A.Johnson
Lupinus johannis-howellii C.P.Sm.
Malvastrum howellii Eastw. ≡ Malacothamnus howellii (Eastw.) Kearney
Oenothera deltoides var. howellii Munz ≡ Oenothera deltoides subsp. howellii (Munz) W.M.Klein
Orobanche valida subsp. howellii Heckard ≡ Aphyllon validum subsp. howellii (Heckard & L.T.Collins) A.C.Schneid.
Pernettya howellii Sleumer ≡ Gaultheria howellii (Sleumer) D.J.Middleton
Phacelia howelliana N.D.Atwood
Portulaca lutea var. howellii D.Legrand ≡ Portulaca howellii (D.Legrand) Eliasson
Psidium galapageium var. howellii D.M.Porter
Puccinellia howellii J.I.Davis
Quercus × howellii Tucker
Trisetum howellii Hitchc. ≡ Peyritschia howellii (Hitchc.) Finot & P.M.Peterson
[Bryophytes] Fissidens howellii E.B. Bartram
Riccia howellii M. Howe
[Algae] Ceramium howellii Setchell & N.L.Gardner
Hemineura howellii W.R.Taylor ≡ Austrofolium howellii (W.R.Taylor) M.J.Wynne
Microcoleus howellii Setchell & Gardner
Sargassum howellii Setchell
Spatoglossum howellii Setchell & N.L.Gardner
Weeksia howellii Setchell & N.L.Gardner
[Fungi] Physcia howellii Linder
Polyporus howellii W.B. Cooke & Bonar

George Taylor Howell, 1848-1914, of Rockville, IN

[Fungus] Nolanea howellii Peck ≡ Entoloma howellii (Peck) Dennis ≡ Leptonia howellii (Peck) Dennis

Arden Howell, Jr., 1910-1966, mycologist

[Actinomycetes] Actinomyces howellii  V.E. Dent & R.A.D. Williams

Robert L. Howell IV

[Diatom] Desikaneis howellii A.K.S.K.Prasad

Marshall Avery Howe, 1867–1936

[Red Alga] Howella C.W.Schneider, Popolizio, L.G.Kraft & G.W.Saunders

Margaret Louise Cannon Carr Howell Clarkson, 1880-1978

[Bryophyte]Taxiphyllum howellianum H.A. Crum & L.E. Anderson = Plagiothecium howellianum H.A. Crum & L.E. Anderson 2603:8000:CAF0:41B0:C6F9:1FB1:6204:EE3E 20:56, 5 February 2025 (UTC)