G
edit- G.A. de Vries - Gerardus Albertus de Vries Gerardus A. de Vries
- G.A.Allen - Geraldine A. Allen
- Gabel - James Russel Gabel
- Gabelli - Lucio Gabelli
- G.A.Black - George Alexander Black
- Gable - Joseph Benson Gable
- Gabr. - Johan August Gabrielsson
- Gabrieljan - Elenora Tzolakovna Gabrieljan
- Gabrielson - Ira Noel Gabrielson
- Gaertn. - Joseph Gaertner Joseph Gärtner
- G.A.Fisch. - Gunter A. Fischer
- Gage - Andrew Thomas Gage
- Gagnebin - Abraham Gagnebin
- Gagnep. - François Gagnepain
- G.Agostini - Getulio Agostini
- G.A.Huber - Glenn Anthony Huber
- G.A.Klebs - Georg Klebs Georg Albrecht Klebs
- Gaill. - Charles Gaillardot
- Gaillard - Albert Gaillard
- Gaillon - Benjamin Gaillon François Benjamin Gaillon
- Gaimard - Joseph Paul Gaimard
- Gajewski Gaj. - Waclaw Gajewski
- Gajic - Milovan R. Gajic
- Gajurel - Padma Raj Gajurel
- G.A.Klebs - Georg Albrecht Klebs
- Gale - Shirley Gale Shirley Gale Cross
- Galeano - Gloria Galeano Garcés Gloria Amparo Galeano Garcés Gloria A. Galeano
- Galeotti - Henri Guillaume Galeotti (?! Gal.: [1])
- Galet - Pierre Galet
- Galland - Marie Cécile Galland
- Gallaud - Ernest-Isidore Gallaud
- G.Allen - Gary Allen
- Gallesio - Georgio Gallesio Giorgio Gallesio
- Galpin - Ernest Edward Galpin
- Galushko - Anatol I. Galushko
- Gambel - William Gambel
- Gamble - James Sykes Gamble
- Gamerro - Juan C. Gamerro
- Gamisans - Jacques Gamisans
- G.A.Morales - Gustavo A. Morales
- Gams - Helmut Gams
- G.A.M.Scott - George Anderson Macdonald Scott
- Gamundí - Irma Josefa Gamundí Irma Josefa Gamundí de Amos
- Gand. - Michel Gandoger
- G.Anderson - George W. Anderson
- Gandhi - Kancheepuram Natarajan Gandhi Kancheepuram N. Gandhi
- G.A.Newton - George Albert Newton
- G.A.Noble - Glenn Arthur Noble
- Garab. - Star Garabedjan
- Garass. - Luiz A. Garassini
- Garaventa - H.Agustin Garaventa
- Garay - Leslie Andrew Garay Leslie A. Garay
- Garb. - I. Garbowski
- Garbari - Fabio Garbari
- Garbary - David J. Garbary
- Garber - Abram Paschal Garber
- Garbini - Adriano Garbini
- García Arév. - Abel García Arévalo
- García-Barr. - Hernando García-Barriga
- García-Castro - Joaquín Bernardo García-Castro
- Garcia de Orta - Garcia de Orta
- García Gonz. - I. García Gonzalez
- García-Gran. - García-Granados
- García Mart. - Xosé Ramón García Martínez
- García-Martín - Felipe García-Martín
- García-Mend. - Abisai Josue García-Mendoza
- Garcia Mur. - Pablo García-Murillo
- García-Rada - German García-Rada
- Garcías Font - Llorenç Garcias Font
- García Vall. - Isabel García Vallejo
- García-Zorrón - Noemi García-Zorrón
- Garcin - Robert Garcin
- Garcke - Christian August Friedrich Garcke Christian A. F. Garcke
- Gard - Médéric Gard
- Garden - Alexander Garden (naturalist)
- Gardet - G. Gardet
- Gardiner - William Gardiner
- Gardoni - Luigi Gardoni
- Gardou - Christiane Gardou
- Gardner - George Gardner (botanist)
- Garg - A.K. Garg
- Gargiulo - Gaetano M. Gargiulo
- Garib. - Eleni Accati Garibaldi
- Garilleti - Ricardo Garilleti
- Gariod - Charles Henri Gariod
- Garkov. - V.M. Garkovenko
- Garman - Philip Garman
- Garnet - John Roslyn Garnet
- Garnica - Sigisfredo Garnica
- Garnier - Max Garnier
- Garn.-Jones - Philip John Garnock-Jones
- L. GarofanoGarofano - L. Garofano
- Garoglio - P.G. Garoglio
- G.A.Rojas - Gustavo A. Rojas
- G.A.Romero - Gustavo Adolfo Romero
- Garov. - Santo Garovaglio
- Garré - M. Garre
- Garretson - J.D. Garretson
- Garrett - Albert Osbun Garrett
- Garrido - Norberto Garrido
- Garsault - François-Alexandre de Garsault François Alexandre Pierre de Garsault
- Garside - Sidney Garside
- Gartner - Hans Gartner
- Garud - A.B. Garud
- G.A.Russell - George Archie Russell
- Garwood - Edmund Johnston Garwood
- Garzia - Garzia
- Gasc - C. Gasc
- Gasp. - Guglielmo Gasparrini
- Gaspar - Frida C. Gaspar
- Gasparik. - Viera Gaspariková
- Gasperini - G. Gasperini
- Gassner - Johann Gustav Gassner
- Gasson - Peter Eric Gasson
- Gastaldo - Paola Gastaldo
- Gastony - Gerald Joseph Gastony
- Gathoye - Jean-Louis Gathoye
- Gatsch. - K.A. Gatschetschiladze
- Gatt. - Augustin Gattinger
- Gattef. - Jean Gattefossé
- Gattenhof - Georg Matthias Gattenhof
- Gatterer - Christoph Wilhelm Jacob Gatterer
- Gatti - C. Gatti
- Gattuso - Susana Gattuso
- Gatty - Margaret Gatty Margaret Scott Gatty
- Gauba - Erwin Gauba
- Gauckler - Konrad Gauckler
- Gaudich. - Charles Gaudichaud-Beaupré
- Gaudin - Jean-François-Aimé-Philippe Gaudin Jean François Aimée Gottlieb Philippe Gaudin
- Gaufin - Arden Rupert Gaufin
- Gaugué - G. Gaugué
- Gäum. - Ernst Albert Gäumann
- Gaume - Marie Leon Camille Raymond Gaume
- Gaussen - Henri Gaussen Henri Marcel Gaussen
- Gaut. - Marie Clément Gaston Gautier
- Gavaudan - Pierre Gavaudan
- Gav.-Correa - Gaviria-Correa
- Gavioli - Orazio Gavioli
- Gaviria - J. Gaviria
- Gavr. - B.D. Gavrilenko
- G.A.Wallace - G. Ansley Wallace
- G.A.Weiss - Joseph Gustav Adolf Weiss
- G.A.Wheeler - Gerald Allen Wheeler Gerald A. Wheeler
- Gay - Claude Gay
- Gáyer - Gyula Gáyer Gyula Julius Gáyer
- Gaynor - B.D. Gaynor
- G.Banks - George Banks
- G.B.Collins - Gary B. Collins
- G.Beck - Günther Beck von Mannagetta und Lerchenau G. Beck von M. und L.
- G.Becker - Georges Becker
- G.Benn. - George Bennett
- G.Berg - G. Berg
- G.Bertol. - Giuseppe Bertoloni
- G.Black - George Black
- G.Bosc - Georges Bosc
- G.B.Popov - George Basil Popov
- G.Br. - Gary Brown
- G.Braun - Gottlieb Braun
- G.B.Wilson - G.B. Wilson
- G.C.Adams - Gerard C. Adams
- G.C.C.Gilbert - Georges Charles Clément Gilbert
- G.C.Franklin - George C.H. Franklin
- G.Chacón - Gloria Chacón Roldán
- G.C.Hayw. - Glenys C. Hayward
- G.Clifford - George Clifford III
- G.Cortés - Gilberto Cortés
- G.C.S.Clarke - Giles C. S. Clarke
- G.C.Tucker - Gordon C. Tucker
- G.Cunn. - G. H. Cunningham Gordon Herriott Cunningham Gordon Heriot Cunningham Gordon Herriot Cunningham Gordon H. Cunningham
- G.C.Wall. - George Charles Wallich
- G.C.Wang - G.C. Wang
- G.C.Whipple - George C. Whipple George Chandler Whipple
- G.Dahlgren - Gertrud Dahlgren
- G.Davies - George Davies
- G.Dawson - Genoveva Dawson
- G.D.Br. - Grant Dukelow Brown
- G.D.Carr - Gerald D. Carr
- G.D.Gordon - Gregory D. Gordon
- G.D.Jones - Gretchen D. Jones
- G.Don - George Don
- G.D.Pal - G.D. Pal
- G.D.Rowley - Gordon Douglas Rowley
- G.D.Wallace - Gary D. Wallace
- G.E.Baker - Gladys Elizabeth Baker
- G.E.Bernard - Georges Eugène Bernard
- Geddes - Patrick Geddes
- Geer - Jan Lodewijk Willem de Geer van Jutphaas
- Geerinck - Daniel Geerinck
- Geh. - Adalbert Geheeb
- G.E.Haglund - Gustaf Emmanuel Haglund Gustaf Emanuel Haglund
- G.E.Harper - Gillian E. Harper
- G.E.Howard - Grace Elizabeth Howard
- Géhu - Jean-Marie Géhu
- G.E.Hutch. - George Evelyn Hutchinson
- Geiger - Philipp Lorenz Geiger
- Geiseler - Eduard Ferdinand Geiseler
- Geissler - Ursula Geissler
- Geitler - Lothar Geitler
- Gelbr. - Jörg Gelbrecht
- Geld. - A.M. Geldikhanov
- G.E.Lee - Gaik Ee Lee
- Gelert - Otto Christian Leonor Gelert
- G.E.Linds. - George Edmund Lindsay
- Gelmi - Enrico Gelmi
- Gelonesi - G. Gelonesi
- Gelting - Paul Gelting Paul Emil Elliot Gelting
- Geltman - Dmitri Victorovich Geltman
- Gen - Josepa Gen
- Geners. - Samuel Genersich
- Genev. - Gaston Genevier Léon Gaston Genevier
- Geniez - Philippe Geniez
- Gensel - Patricia G. Gensel
- Gentil - Ambroise Gentil
- Gentles - J.C. Gentles
- Gentner - Georg Gentner
- Gentry - Howard Scott Gentry
- Genty - T.G. Genty
- Geoffrey - A. Geoffrey
- Georg - Lucille K. Georg
- Georges - G. Georges
- Georgescu - Constantin C. Georgescu
- Georgev. - Peter Georgevitch
- Georgi - Johann Gottlieb Georgi
- Georgia - Ada E. Georgia
- Georgiadou - E. Georgiadou
- Georgiev - Stephan Georgieff
- G.E.Pollard - Glenn E. Pollard
- Gérard - Louis Gérard
- Gerbaulet - Maike Gerbaulet
- Gerd Moser - Gerd Moser
- Gereau - Roy Emile Gereau
- Gerhardt - Julius Gerhardt
- Gerlach - W. Gerlach
- Germ. - Jacques Nicolas Ernest Germain de Saint-Pierre Jacques N. E. Germain
- Germar - Ernst Friedrich Germar
- G.Ernst - Gisela Ernst
- Gerold - Raymond Gerold
- Gerrienne - Phillipe Gerrienne
- Gerstb. - Pedro Gerstberger
- Gerstner - Jacob Gerstner
- Gervais - Camille Gervais
- Gerw.Keller - Gerwin Keller
- G.E.Sm. - G.E.Smith - Gerard Edwards Smith
- Gesner - Conrad Gessner
- Gessner - Johannes Gessner
- Gestro - Raffaello Gestro
- Getachew - Getachew Aweke
- G.E.Thomps. - George Edward Thompson
- Getliffe - Fiona Mary Getliffe
- G.E.Tucker - Gary E. Tucker
- Geyer - Carl Andreas Geyer Karl Andreas Geyer
- Geyl. - Hermann Theodor Geyler
- G.F.Atk. - George Francis Atkinson
- G.F.Carr - George Francis, Jr. Carr
- G.Fisch. - Georg Fischer (botanist)
- G.Fisch.Waldh. - Gotthelf Fischer von Waldheim
- G.Forst. - Georg Forster
- G.F.Grandjot - Gertrud F.de Grandjot
- G.F.Russell - George Frederick Russell
- G.F.Sm. - George F. Smith
- G.F.Wilson - George Fergusson Wilson
- G. G. - Jean Charles Grenier J. C. Grenier & Dominique Alexandre Godron D. A. Godron
- G.Gaertn. - Gottfried Gaertner Philipp Gottfried Gaertner
- G.García - Gustavo García
- G.Garnier - Gaston Garnier
- G.G.Graham - George Gordon Graham
- G.Giberti - Gustavo Carlos Giberti
- G.G.J.Bange - G. G. J. Bange
- G.G.Kimura - G.G. Kimura
- G.G.Niles - Grace Greylock Niles
- G.Gordon - George Gordon (horticulturalist) !Gordon
- G.Grüss - G. Grüss
- G.G.Sm. - Gerald Graham Smith
- G.G.Tang - Geng Guo Tang
- G.Gut. - Gabriel Gutiérrez
- Ghafoor - Abdul Ghafoor
- G.Hahn - Gotthold Hahn
- G.Haller - Gottlieb Emmanuel von Haller
- G.Halliday - Geoffrey Halliday
- G.H.Anderson - George H. Anderson
- G.H.Bauer - Gustav Heinrich Bauer
- G.H.Berk. - Garven Hugh Berkeley
- G.Hend. - George Henderson (botanist)
- G.Hensl. - George Henslow
- G.Herrera - Gerardo Herrera
- Ghesq. - Jean H.P.A. Ghesquière
- G.Hess - G. Hess
- G.H.Godfrey - George H. Godfrey
- Ghiesbr. - Auguste Boniface Ghiesbreght
- Ghika - N.D. Ghika
- Ghildyal - N. Ghildyal
- Ghini - Luca Ghini
- Ghisa - Eugen Victor Ghisa
- G.H.Johnstone - George Henry Johnstone
- G.H.Jones - George Howard Jones
- G.H.Martin - George Hamilton Martin
- G.H.M.Lawr. - George Hill Mathewson Lawrence
- G.Hoffm. - Gerhard Hoffmann
- G.H.Otth - Gustav Heinrich Otth
- G.H.Rua - Gabriel H. Rua
- G.H.S.Wood - Geoffrey H.S. Wood
- G.H.Tate - George Henry Hamilton Tate
- G.H.Turner - George Harrison Turner
- G.H.Wagner - Georg Heinrich Wagner
- G.H.Ward - George Henry Ward
- G.H.Ye - Guang Han Ye
- G.H.Zhu - Guang Hua Zhu
- Giacom. - Valerio Giacomini
- Giard - Alfred Giard
- Giardelli - María Luisa Giardelli
- Giardina - Girolamo Giardina
- Gibbes - Lewis Reeve Gibbes
- Gibbs - Lilian Gibbs Lilian Suzette Gibbs
- Gibby - Mary Gibby
- Gibelli - Giuseppe Gibelli
- Gibert - José Ernesto Gibert
- Gibson - George Stacey Gibson
- Gibulescu - R. Gibulescu
- Gideon F.Sm. - Gideon Francois Smith
- Giebel - Christian Gottfried Andreas Giebel
- Giesecke - Karl Ludwig Giesecke Carl Ludwig Giesecke Sir Charles Lewis Giesecke Johann Georg Metzler
- Giess - Johan Wilhelm Heinrich Giess
- G.I.Ivanov - G.I. Ivanov
- Gil-ad - Nir Louis Gil-ad
- Gilb. - Robert Lee Gilbertson
- Gilbert - Benjamin Davis Gilbert
- Gilg - Ernest Friedrich Gilg
- Gilg-Ben. - Charlotte Gilg-Benedict
- Gilib. - Jean-Emmanuel Gilibert
- Gilkey - Helen Margaret Gilkey
- Gillek. - Léopold Guillaume Gillekens
- Gillet - Claude-Casimir Gillet
- Gillett - Margaret Clark Gillett
- Gilli - Alexander Gilli
- Gillies - John Gillies (botanist)
- Gillis - William Thomas Gillis
- Gill.K.Br. - Gillian K. Brown
- Gillot - François-Xavier Gillot François Xavier Gillot
- Gilly - Charles Louis Gilly
- Gilmour - John Scott Lennox Gilmour
- Gilomen – Hans Gilomen
- Ginanni - Giuseppe Ginanni
- Ging. - Frédéric Charles Jean Gingins de la Sarraz
- Gir.-Chantr. - Justin Girod-Chantrans
- Giraldi - Giuseppe Giraldi
- Girard - Frédéric de Girard
- Giraudias - Ludovic Giraudias
- Giseke - Paul Dietrich Giseke Paul Dietrich von Giseke
- Giul. - Ana Maria Giulietti
- Giuliano - Daniel Giuliano
- Giusti - Lionel Giusti
- Givnish - Thomas J. Givnish
- G.Jacques - G. Jacques
- Gjaerev. - Olav Gjærevoll Olav Gjaerevoll
- G.J.Allman - George James Allman
- G.J.Anderson - Gregory Joseph Anderson
- G.J.D.Sm. - Gavin J.D. Smith
- G.J.Howell - G.J. Howell
- G.J.Lewis - Gwendoline Joyce Lewis
- G.Johans. - G. Johansen
- G.J.Schmidt - Gregory J. Schmidt
- G.J.Wang - Gan Jin Wang
- G.J.Wilson - Graeme J. Wilson
- G.J.Xu - Guo Jun Xu
- G.K.Br. - Gregory K. Brown
- G.Keller - Gottfried Keller (botanist)
- G.Kirchn. - Georg Kirchner
- G.K.Müll. - Gerd K. Müller
- G.Koch - Georg Friedrich Koch
- G.Kretzschmar - Gisela Kretzschmar
- G.K.Rogers - George King Rogers
- G.Kunkel - Günther W.H. Kunkel
- G.K.Warren - Gouverneur K. Warren
- G.Lakon - Georg Lakon
- Glad.L.Sm. - Gladys L. Smith
- Glass - Charles Edward Glass
- Glassman Sidney Frederick Glassman
- Glatf. - Noah Miller Glatfelter
- G.Lawson - George Lawson (botanist)
- Glaz. - Auguste François Marie Glaziou
- G.L.Barron - George L. Barron
- G.L.Butler - Garl L. Butler
- G.L.Church - George Lyle Church
- G.L.Davis - Gwenda Louise Davis
- Gleason - Henry A. Gleason Henry A. Gleason (botanist) Henry Allan Gleason
- Gled. - Johann Gottlieb Gleditsch
- Gledhill - David Gledhill David Gledhill (botanist)
- Glehn - Peter von Glehn
- Glen - Hugh Francis Glen
- Glend. - Robert Glendenning Robert Glendinning
- Glenn - Anthony Glenn
- G.L.Esteves - Gerleni Lopes Esteves
- G.L.Ferreira - Geisa Lauro Ferreira
- G.L.Gusarova - Galina L. Gusarova
- G.L.Hoffman - Georgia L. Hoffman
- G.Lindb. - Gustaf Anders Lindberg
- G.Ll.Lucas - Grenville Llewellyn Lucas
- G.L.Nesom - Guy L. Nesom
- Glocker - Ernst Friedrich Glocker
- G.Lodd. - George Loddiges
- G.Lom.Sm. - Gerald Lomax Smith
- G.López - Ginés Alejandro López González
- G.Lorinser - Gustav Lorinser
- Glover - James Glover (botanist)
- Gloxin - Benjamin Peter Gloxin
- G.L.Rob. - George Leslie Robinson
- G.L.Sm. - Gary Lane Smith
- G.L.Stout - Gilbert Leonidas Stout
- Glück - Christian Maximilian Hugo Glück
- G.L.Webster - Grady Linder Webster
- G.L.Williams - Graham Lee Williams
- G.Maass - Gustav Maass
- G.Malhotra - G. Malhotra
- G.Manetti - Giuseppe Manetti
- G.Mann - Gustav Mann
- G.Martens - Georg Matthias von Martens George Matthias von Martens
- G.Martin - George Martin (botanist)
- G.M.Barroso - Graziela Maciel Barroso
- G.M.Dawson - George Mercer Dawson
- G.Mey. - Georg Friedrich Wilhelm Meyer
- G.M.Jansen - Gerrit M. Jansen
- G.M.Levin - Gregory Moiseyevich Levin
- G.Moore - George Thomas Moore
- G.Morales - G. Morales
- G.Moreno - Gabriel Moreno
- G.Moser - Günther Moser
- G.M.Plunkett - Gregory M. Plunkett
- G.M.Sm. - Gilbert Morgan Smith
- G.M.Thomson - George Malcolm Thomson
- G.M.Tourn - Graciela M. Tourn
- G.Mull. - Gino Muller
- G.Murray - George Robert Milne Murray
- G.M.Waterh. - Grace Marion Waterhouse
- G.M.Wheeler - George Montague Wheeler
- G.M.Zimm. - Gerda Margarette Zimmermann
- G.Navarro - Gonzalo Navarro
- G.N.Collins - Guy N. Collins
- G.Nicholson - George Nicholson (horticulturist)
- Gnil. - M.B. Gnilovskaja
- G.N.Jones - George Neville Jones
- G.N.Mill. - Gertrude Nevada Miller
- G.Norman - George Norman (naturalist)
- G.N.Singh - G.N. Singh
- G.N.Stevens - Gweneth Nell Stevens
- Goadby - Bede Theodoric Goadby
- G.O.Allen - Guy Oldfield Allen
- Gobi - Christoph Jakosolewitsch Gobi
- Goda - Anne Goda
- Goddard - H.N. Goddard
- Goddijn - Wouter Adriaan Goddijn
- Godeas - Alicia M. Godeas
- Godeau - Marc Godeau
- Godefroy - F.F. Godefroy
- Godet - Charles Henri Godet
- Godey - Godey
- Godfery - Masters John Godfery
- God.-Leb. - Alexandre Godefroy-Lebeuf
- Godm. - Frederick DuCane Godman
- Godr. - Dominique Alexandre Godron
- Godw. - M.I. Godwinski
- Goebel - Karl Christian Traugott Friedemann Goebel
- Goeldi - Émil Goeldi Émil August Goeldi Émil Göldi Émil August Göldi Emil August Goeldi Emílio Augusto Goeldi
- Goering - Philip Friedrich Wilhelm Goering
- Goès - Monique Britto de Goes
- Goeschke - Franz Goeschke
- Goethe - Johann Wolfgang von Goethe
- Göktürk - R.Süleyman Göktürk
- Gola - Giuseppe Gola
- Golamco - Andres S. Golamco
- Golatkar - V.V. Golatkar
- Goldb. - Carl Ludwig Goldbach Karl Ludwig Goldbach
- Goldberg - Aaron Goldberg (botanist)
- Goldblatt - Peter Goldblatt
- Golden - Larry Golden
- Goldenb. - Carl Friedrich Goldenberg
- Goldfuss - Georg August Goldfuss
- Goldie - John Goldie (botanist)
- Goldie-Sm. - Elizabeth Kathleen Goldie-Smith
- Golding - Jack Golding
- Goldm. - J.G. Goldmann
- Goldman - Edward Alphonso Goldman
- Goldring - William Goldring
- Goldschm. - Richard Goldschmidt
- Golenia - A. Golenia
- Golenkin - Michail Iljitsch Golenkin
- Golfari - Lamberto Golfari
- Golitsin - Sergey Vladimirovich Golitsin
- Goller - Andreas Goller (botanist)
- Golonk. - J. Golonkowa
- Golosk. - Vitaliy Petrovich Goloskokov
- Golovin - Petr Nikolaevich Golovin
- Golovleva - L.A. Golovleva
- Golubic - Stjepko Golubic
- Gölz - Peter Gölz
- Gomb. - René Gombault
- Gomes - Bernardino António Gomes
- Gomes da Silva - Ary Gomes da Silva
- Gomes Ferreira - Augusto Burle Gomes Ferreira
- Gómez-Campo - César Gómez-Campo
- Gómez-Laur. - Jorge Gómez-Laurito
- Gómez Pompa - Arturo Gómez Pompa
- Gómez Rom. - Silvia E. Gómez Romero
- Gómez-Sosa - Edith V. Gómez-Sosa
- Gomont - Maurice Augustin Gomont
- Gonç. - Maria Leonor Gonçalves Maria Leonor de Sousa Gonçalves
- Gonç.-Carr. - Matilde F. Gonçalves-Carralves
- Gonez - Paul Gonez
- Gong C.Wang - Gong Chen Wang
- Gonn. - Gabriel Gonnermann
- Gönnert - R. Gönnert
- Gonsoulin - Gene J. Gonsoulin
- Gontsch. - Nikolai Fedorovich Gontscharow
- Gonz.Albo - José González Albo Campillo
- González - Francisco González (botanist)
- Gonzalo - Hermano Gonzalo
- Gonzalves - Ella Anne Gonzalves
- Gonz.Frag. - Romualdo González Fragoso
- Gonz.Géigel - Lutgarda González Géigel
- Gonz.-Led. - Manuel González-Ledesma
- Gonz.-Mart. - Manuel González-Martín
- Gonz.Sánchez - M. González Sánchez
- Gooch - F.S. Gooch
- Good - Peter Good
- Goodd. - Leslie Newton Goodding
- Goode - John B. Goode
- Gooden. - Samuel Goodenough
- Goodey - J.Basil Goodey
- Goodman - George Jones Goodman
- Goodrich - Sherel Goodrich
- Goodsp. - Thomas Harper Goodspeed
- Goodwillie - Carol Goodwillie
- Goodwin - Gregory A. Goodwin
- Goodwyn - Lyle E. Goodwyn
- Goodyer - John Goodyer
- Goor - Andreas Cornelis Joseph van Goor
- Goos - Roger Delman Goos
- Gooss. - Antonie Petrus Gerhardy Goossens
- Gopalan - Rangasamy Gopalan
- Göpp. - Johann Heinrich Robert Göppert
- Gorbatenko - Ludmilla Gorbatenko
- Gorbunova - N.V. Gorbunova
- Gord., Gordon - George Gordon (botanist)
- Gordenko - V.I. Gordenko
- Gordienko - M.O. Gordienko
- Gordon - George Gordon (botanist) !G.Gordon
- Gordon-Gray - Kathleen Dixon Huntley Gordon-Gray
- Gordon-Mills - Elizabeth M. Gordon-Mills
- Gord.Sm. - Gordon Smith (botanist)
- Goreau - Thomas F. Goreau
- Goree - Harold Goree
- Gorenflot - Robert Gorenflot
- Gorenz - August Mark Gorenz
- Gorgidze - A.D. Gorgidze
- Gorodkov - Boris Nikolaevich Gorodkov
- Gorozh. - Ivan Nikolaevich Gorozhankin Ivan Gorozhankin
- Gorschk. - Sofiya Gennadierna Gorschkova
- Gorski - Stanislaw Batys Gorski
- Gosse - Philip Henry Gosse
- Gossw. - John Gossweiler
- Gotth.Schneid. - Gotthard Schneider
- Gottlieb - Leslie D. Gottlieb Leslie David Gottlieb
- Gottsche - Carl Moritz Gottsche
- Gouan - Antoine Gouan
- Goudot - Justin Goudot
- Gougerot - Henri Gougerot
- Gould - Frank Walton Gould
- Goulimy - C.N. Goulimy
- Gourret - Paul Gourret Paul Gabriel Marie Gourret
- Govaerts - Rafaël Govaerts Rafaël Herman Anna Govaerts
- Govind. - Ethirajalu Govindarajalu
- Govindar. - V.S. Govindarajan
- Govindu - Heirehalli Chenniah Govindu
- Govor. - Vasilii Sergeevich Govoruchin
- Govus - Thomas E. Govus
- Gowan - Sharon P. Gowan
- Gowans - Charles Shields Gowans
- Goward - Trevor Goward
- Gowda - Maragowdanahalli Hombegowda Mari Gowda
- Gowen - James Robert Gowen
- Gower - William Hugh Gower
- Gowth. - S. Gowthaman
- G.Pabst - Gustav Pabst
- G.P.Baker - George Percival Baker
- G.Pearson - Gilbert Pearson
- G.Perkins - George Henry Perkins
- G.Petersen - Gitte Petersen
- G.Phil. - Georg Philippi
- G.P.Lewis - Gwilym Peter Lewis
- G.P.Méndez - Gina Paola Méndez
- G.Poirault - Georges Poirault
- G.P.Singh - G.P. Singh
- G.P.White - George P. White
- Grab. - Heinrich Emanuel Grabowski
- Grabherr - Walter Grabherr
- Graciano-Ribeiro - Dalva Graciano-Ribeiro
- Graddon - William Douglas Graddon
- Gradst. - Stephan Robbert Gradstein
- Graebener - Leopold Graebener
- Graebn. - Paul Graebner Karl Otto Graebner Karl Otto Robert Peter Paul Graebner Carl Otto Robert Peter Paul Graebner
- Graeffer - John Graeffer
- Graells - Mariano de la Paz Graëlls y de la Aguera Mariano de la Paz Graells
- Graewe - Per Henrik Fredrik Graewe
- Graf - Siegmund Graf
- Graff - Eberhard Gottlieb Graff
- Grafl - Ina Grafl
- Graham - Robert Graham (botanist)
- Grande - Loreto Grande
- Grández - César Grández Ríos
- Grandid. - Alfred Grandidier
- Granv. - Jean-Jacques de Granville
- Grassé - Pierre-Paul Grassé
- Grassi - Giovanni Battista Grassi
- Gratel. - Jean Pierre Sylvestre Grateloup Jean-Pierre Sylvestre de Grateloup Jean Pierre A. Sylvestre de Grateloup
- Grau - Hans Rudolph Jürke Grau
- Grauer - Sebastian Grauer
- Grav. - Pierre Joseph Frederic Gravet
- Gravely - F. H. Gravely Frederic Henry Gravely
- Graves - George Graves
- Gravend. - Barbara Gravendeel
- Gravina - Pasquale Gravina
- Gravis - Jean Joseph Auguste Gravis
- Gray - Samuel Frederick Gray
- Grayling - Peter Grayling
- Grayum - Michael Howard Grayum
- Greb. - Igor Sergeevich Grebenshchikov
- Grecescu - Dimitrie Grecescu
- Grech - Giovanni Carlo Grech Delicata
- Greco - N.V. Greco
- Gredilla - Apolinar Federico Gredilla y Gauna
- Green - Thomas Green (botanist)
- Greene - Edward Lee Greene
- Greenm. - Jesse More Greenman
- Greenway - Percy James Greenway
- Greg. - Eliza Standerwick Gregory
- Grembl. - Pater Julius Gremblich
- Gremli - August Gremli
- Gremmen - J. Gremmen
- Gren. - Jean Charles Marie Grenier Jean Charles Grenier Charles Grenier
- G.Retz. - Gustaf Retzius Magnus Gustaf Retzius Magnus Gustav Retzius
- Greuter - Werner Rodolfo Greuter
- Grev. - Robert Kaye Greville
- Grevill. - Anders Yngve Grevillius
- Grevtsova - A.T. Grevtsova
- Grey - Charles Hervey Grey
- Grey-Wilson - Christopher Grey-Wilson
- G.R.Hend. - Gemma Robyn Henderson
- Grierson - Andrew John Charles Grierson
- Griess. - Ludwig Griesselich
- Griff. - William Griffith (botanist)
- Griffini - Luigi Griffini
- Griffioen - K. Griffioen
- Griffiths - David Griffiths (botanist)
- Griffon - Edouard Griffon
- Grifo - F.T. Grifo
- Griggs - Robert Fiske Griggs
- Grimaldi - Clemente Grimaldi
- Grimm - Johann Friedrich Carl Grimm
- Grindon - Leopold Hartley Grindon
- Gris - Jean Antoine Arthur Gris
- Griscom - Ludlow Griscom
- Griseb. - August Heinrich Grisebach August Heinrich Rudolf Grisebach
- Grisel. - Francesco Griselini
- G.R.Krause - Gerda Rosa Krause
- G.Rodr. - Gilberto Domingo Rodríguez Ramírez Gilberto Rodríguez
- Groenew. - Barend Hermanus Groenewald
- Groeninckx - Inge Groeninckx
- Groenland - Johannes Groenland
- Grognier - Louis Furcy Grognier Louis-Furcy Grognier Louis-Furcy Grognier (naturalist)
- Grognot - Camille Grognot
- G.Rohde - G. Rohde
- Grolle - Riclef Grolle
- Grom - Sezana, Sr Grom
- Gromov - Gromov
- Grønlund - Carl Christian Howitz Grønlund
- Gronov. - Johan Frederik Gronovius Jan Frederik Gronovius (Johannes Fredericus Gronovius Jan Fredrik Gronovius
- Groot. - Herman Johannes Grootendorst
- Gross - Rudolf Gross
- Grossh. - Alexander Alfonsovich Grossheim Alexander Grossheim
- G.Rossi - Giovanni Batista Rossi
- G.Roth - Georg Roth (botanist)
- Grout - Abel Joel Grout
- Grove - William Bywater Grove
- Gr.Rossi - Graziano Rossi (botanist)
- G.R.Tate - George Ralph Tate
- Gruas-Cav. - C. Gruas-Cavagnetto
- Grube - Martin Grube
- Gruber - Calvin Luther Gruber
- Grubov - Valery Ivanovich Grubov Valery Ivanovitsch Grubov
- Gruby - David Gruby
- Grudz. - Irina Aleksandrovna Grudzinskaja Irina Aleksandrovna Grudzinskaya
- Gruezo - William Sm. Gruezo
- Grufberg - Isaac Olof Grufberg
- Gruff - Susan Carol Gruff
- Gruhn - U. Gruhn
- Gruia - Lucian Gruia
- Gruith. - Franz von Gruithuisen Franz von Paula Gruithuisen Franciscus de Paula Gruithuisen
- Grulich - Vít Grulich
- Grummann - Vitus Johannes Grummann
- Grumm-Grzhim. - Grigory Grumm-Grzhimaylo Grigor Efimowitsch Grumm-Grzhimailo
- Grün - Walter Grün
- Grund - Darryl W. Grund
- Gruner - Leopold F. Gruner
- Grüning - G.R. Grüning
- Grunow - Albert Grunow
- Grupe - Donald A. Grupe
- Grushv. - Igor Vladimirovich Grushvitzky
- Grüss - Johannes Grüss
- Grutt. - L.H. Grutterink
- Gruzov - E.N. Gruzov
- G.R.W.Arnold - Günter Rudolph Walter Arnold
- G.R.Zheng - Guang Rong Zheng
- G.Santiago - G. Santiago
- G.S.Bunting - George Sydney Bunting
- G.Schäf. - Gerhardt Schäfer
- G.Scheffler - Georg Scheffler
- G.Schellenb. - Gustav August Ludwig David Schellenberg
- G.Schneid. - George Schneider (botanist)
- G.Schneid.bis - Georg Schneider
- G.Shaw - George Shaw George Kearsley Shaw
- G.Sinclair - George Sinclair (botanist)
- G.Singh - Gurcharan Singh (botanist)
- G.Sm. - George Smith
- G.S.Mill. - Gerrit Smith Miller Gerrit Smith Miller Jr.
- G.S.Rawat - Gopal Singh Rawat
- G.S.Ringius - Gordon Stacey Ringius
- G.S.Sm. - G.S. Smith
- G.Stev. - Greta Stevenson
- G.Sturt - G. Sturt
- G.S.West - George Stephen West
- G.Tate - George Tate
- G.Taylor - George Taylor (botanist) Sir George Taylor
- G.T.Benson - Gilbert Thereon Benson
- G.T.Gong - Gu Tang Gong
- G.Thomson - George Thomson (botanist)
- G.Timm - Gisela Timm
- G.Tineo - Giuseppe Tineo
- G.Tobler - Gertrud Tobler Gertrud Paula Tobler
- G.Trevir. - Gottfried Reinhold Treviranus
- G.T.S.Baylis - Geoffrey Thomas Sandford Baylis
- Guagl. - Encarnación Rosa Guaglianone
- Guala - Gerald F. Guala
- Guarim - Germano Guarim
- Guatteri - Giambattista Guatteri
- Guebhard - Ch. Guebhard
- Guédès - Michel Guédès
- Guég. - Fernand Pierre Joseph Guéguen
- Gueldenst. - Johann Anton Güldenstädt
- Guépin - Jean Pierre Guépin
- Guérin - J.X.B. Guérin
- Guétrot - M. Guétrot
- Guett. - Jean-Étienne Guettard Jean Étienne Guettard
- Guglieri - Adriana Guglieri
- Guiart - Jules Guiart
- Guib. - Victor Guibert
- Guicc. - Giacinto Guicciardi
- Guichard - Claude Guichard
- Guignard - Léon Guignard Jean-Louis-Léon Guignard
- Guilding - Lansdowne Guilding Lansdown Guilding
- Guill. - Jean Baptiste Antoine Guillemin
- Guillaumin - André Guillaumin
- Guillierm. - Marie Antoine Alexandre Guilliermond
- Guim. - Antonio Luis Machado Guimaraes
- Guimpel - Friedrich Guimpel
- Guinea - Emilio Guinea Emilio Guinea López
- Guinier - Philibert Guinier
- Guitt. - Guy Georges Guittonneau
- Gulden - Gro Sissel Gulden
- Gulia - Gavino Gulia
- Gullino - G. Gullino
- Gumbl. - William Edward Gumbleton
- Gunckel - Hugo Gunckel Luer Hugo Gunckel Lüer
- Güner - Adil Güner
- Gunn - Ronald Campbell Gunn
- Gunnarsson - Johan Gottfrid Gunnarsson
- Gunnell - Jean Gunnell
- Gunnerb. - Erik Gunnerbeck
- Gunnerus - Johann Ernst Gunnerus Johan Ernst Gunnerus
- Gün.Schneid. - Günther Schneider
- Günther - Johann Christian Carl Günther
- Guo C.Wang - Guo Chang Wang
- Gürke - Robert Louis August Maximilian Gürke
- Gusarova - I.S. Gusarova
- Gusev - Yu.D. Gusev
- Guseva - K.A. Guseva
- Gusman - Guy Gusman
- Gusmão - Luís Fernando Pascholati Gusmão
- Gusmus - Hermann Gusmus
- Guss. - Giovanni Gussone
- Gus.Schneid. - Gustav Schneider
- Gust. - Carl Emil Gustafsson
- Gustafson - B.A. Gustafson
- Gustave - Hermano Gustave
- Gustavsson - Lars-Åke Gustavsson
- Gust.Fisch. - Gustav Fischer (botanist)
- Gustops - A. Gustops
- Gusul. - Mihail Gusuleac
- Gut. - Gil Gutiérrez
- Gutbier - Christian August von Gutbier
- Guterman - Carl Edward Frederick Guterman
- Gutermann - Walter Gutermann
- Gutfreund - Gutfreund
- Guthnick - Heinrich Josef Guthnick
- Guthrie - Francis Guthrie
- Gutmann - H. Gutmann
- Gutner - L.S. Gutner
- Gutte - Peter Gutte
- Gutter. - R.J. Gutteridge
- Gutw. - Roman Gutwinski
- Guy Garcia - Guy Garcia
- Guzmán - Gastón Guzmán
- Guzm.-Dáv. - Laura Guzmán-Dávalos
- G.V.C.Gonç. - Gustavo Vernet de Costa Gonçalves
- G.Vidal - Gustav Prosper Vidal G. Vidal
- G.W.Andrews - George W. Andrews (botanist)
- G.Watt - George Watt (botanist)
- G.W.Carr - Geoffrey William Carr
- G.Weim. - Karl Gunnar Henning Weimarck
- G.W.Fisch. - George William Fischer
- G.White - Gilbert White
- G.Will. - Graham Williamson
- G.Winter - Heinrich Georg Winter
- G.W.Martin - George Willard Martin
- G.Wolff - G. Wolff
- G.W.Rothwell - Gar W. Rothwell
- G.W.Saunders - Gary W. Saunders
- G.W.Schimp. - Georg Wilhelm Schimper
- G.W.Schmidt - G.W. Schmidt
- G.W.Stevens - George Walter Stevens
- G.W.Wilson - Guy West Wilson
- G.X.Wang - Guang Xi Wang
- Györffy - István Gyorffy
- G.Zenker - Georg August Zenker
- G.Zimm. - Gisbert Zimmermann
- G.Z.Wang - Gui Zhen Wang
H
edit- Ha - Thi Dung Ha
- Haage - Friedrich Adolph Haage
- Haager - Jirí R. Haager
- Haan - Willem de Haan
- H.A.Baker - Hugh Arthur Baker
- Hablitz - Carl Ludwig Hablitz Carl Ludwig von Hablitz Karl Ivanovich Gablits
- H.A.Bond - H.A. Bond
- Hack. - Eduard Hackel
- Hacq. - Belsazar Hacquet
- H.A.Crum - Howard Alvin Crum
- Hada - Yoshine Hada
- Hadac - Emil Hadac
- H.A.Davis - Hannibal Albert Davis
- Hadfield - W. Hadfield
- Hadidi - Mohammed Nabil El Hadidi
- Hadiw. - T. Hadiwidjaja
- Hadjist. - E. Hadjisterkoti
- Haeckel - Ernst Haeckel Ernst Heinrich Philipp August Haeckel
- Haecker - Gottfried Renatus Haecker
- Haegens - Raoul Martin Anne Peter Haegens
- Haegi - Laurence Arnold Robert Haegi
- Haehn - H. Haehn
- Haenke - Thaddäus Haenke Thaddeus Peregrinus Haenke
- Haens. - Felix Haenseler
- Hafellner - Joseph Hafellner
- Hagborg - Walter Arnold Ferdinand Hagborg
- Hagelst. - Robert Hagelstein
- Hagem - Otto Christian Hagem
- Hagemann - Wilhelm Hagemann
- Hagend. - A. Hagendijk
- Hágsater - Eric Hágsater
- Hai M.Li - Hai Mei Li
- Häkkinen - Markku Häkkinen
- H.A.Koch - H.A. Koch
- Halácsy - Eugen von Halácsy
- Halda - Josef Jakob Halda
- Halim - Youssef Halim
- Hall - William Hall
- Haller - Albrecht von Haller
- Haller f. - Albrecht von Haller (son) Albrecht von Haller (1758–1823)
- Hallier - Ernst Hans Hallier
- Hallier f. - Johannes Gottfried Hallier
- Halling - Roy Edward Halling
- Halloy - Stephan R.P. Halloy
- Halst. - Byron David Halsted
- H.A.Lückh. - Hilmar Albert Lückhoff
- Haluwyn - Chantal van Haluwyn
- Ham. - William Hamilton (botanist)
- Hama - Taketo Hama
- Hamam. - Makiko Hamamoto
- Hamant - Claude Hamant
- Hamaya - Toshio Hamaya
- Hamburger - Clara Hamburger
- Hameed - S.F. Hameed
- Hamel - Gontran Hamel Gontran Georges Henri Hamel
- Hamer - Fritz Hamer
- Hamers - Maria E.C. Hamers
- H.A.Mill. - Harvey Alfred Miller
- Hamlin - Bruce Gordon Hamlin
- Hammel - Barry Edward Hammel
- Hammen - Thomas van der Hammen
- Hampe - Ernst Hampe Georg Ernst Ludwig Hampe
- Hamy - Ernest Hamy
- Hanacek - Pavel Hanacek
- Hanagata - Nobutaka Hanagata
- Hanan - E.B. Hanan
- Hanan-Alipi - Ana María Hanan-Alipi
- Hanawa - S. Hanawa
- Hance - Henry Fletcher Hance
- Hancock - Thomas Hancock (botanist)
- Handa - M.R. Handa
- Handlos - Wayne L. Handlos
- Hand.-Mazz. - Heinrich von Handel-Mazzetti Heinrich Raphael Eduard Handel-Mazzetti Heinrich R.E. Handel-Mazzetti
- Handro - Oswaldo Handro
- Handsch. - Carl Friedrich Gottfried Albert Handschuch
- Hanelt - Peter Hanelt
- Hanes - Clarence Robert Hanes
- Hanin - Jean-Louis Hanin L. Hanin
- Hanks - Lena Tracy Hanks
- Hanlin - Richard Thomas Hanlin
- Hanna - G Dallas Hanna
- Hannon - Joseph-Désiré Hannon
- Hanry - Hippolyte Hanry
- Hansg. - Anton Hansgirg
- Hans Huber - Hans Huber
- Hanst. - Johannes von Hanstein Johannes Ludwig Emil Robert von Hanstein
- Har. - Paul Auguste Hariot
- Hara - Kanesuke Hara
- Harb. - Thomas Grant Harbison
- Hard - Miron Elisha Hard
- Hardin - James Walker Hardin
- Harding - Patrick R. Harding
- Hardw. - Thomas Hardwicke
- Hardy - John Hardy
- Hargr. - Bruce James Hargreaves
- Harid. - K. Haridasan
- Harkn. – H. W. Harkness Harvey Willson Harkness Harvey Wilson Harkness
- Harlan - Richard Harlan
- Harling - Gunnar Harling Gunnar Wilhelm Harling
- Harmaja - Harri Harmaja
- Harms - Hermann Harms
- Harned - Joseph Edward Harned
- Harry Hall - Harry Hall
- Harry Sm. - Karl August Harald Smith
- Harshb. - John William Harshberger
- Hart - Henry Chicester Hart Henry Chichester Hart
- Harter - Leonard Lee Harter
- Hartge - Lena Medora Hartge
- Hartig - Theodor Hartig
- Harting - Pieter Harting
- Hartinger - Anton Hartinger
- Hartl - Dimitri Hartl
- Hartland - William Baylor Hartland
- Hartley - William Hartley
- Hartm. Hartman - Carl Johann Hartman Carl Johan Hartman
- Hartmann - Franz Xaver von Hartmann
- Hartog - Cornelis den Hartog
- Hartog-Adams - I.den Hartog-Adams
- Hartung - C.A.F.A.Heinrich Hartung
- Hartvig - Per Hartvig
- Hartw. - Karl Theodor Hartweg
- Hartwich - Carl Hartwich
- Hartwig - August Karl Julius Hartwig
- Hartwiss - Nicolai Anders von Hartwiss
- Harv. - William Henry Harvey
- Harv.-Gibs. - Robert John Harvey-Gibson
- Harvill - Alton McCaleb Harvill, Jr
- Harz - Carl Otto Harz
- Hase - Frank Hase
- Hashim. - Goro Hashimoto
- Hashimov - D.K. Hashimov
- Haskins - Reginald Hinton Haskins
- Hass - Hagen Hass
- Hassall - Arthur Hill Hassall
- Hässel - Gabriela Hässel de Menéndez Gabriela Gustava Hässel de Menéndez Gabriela G. Hässel
- Hasselbr. - Heinrich Hasselbring
- Hasselq. - Fredric Hasselquist
- Hasselt - Johan Coenraad van Hasselt
- Hassk. - Justus Carl Hasskarl
- Hassl. - Emil Hassler
- Hatch - Edwin Daniel Hatch
- Hatschb. - Gert Guenther Hatschbach
- Hatus. - Sumihiko Hatusima
- Haudr. - André-Georges Haudricourt
- Haufler - Christopher H. Haufler
- Haught. - Samuel Haughton
- Hauke - Richard L. Hauke
- Hauman - Lucien Leon Hauman
- Hauser - Margit Luise Hauser
- Hausm. - Franz von Hausmann
- Hausskn. - Heinrich Carl Haussknecht
- Hav. - Johan Jonson Havaas
- Havard - Valery Havard Valéry Havard
- Havil. - George Darby Haviland
- Haw. - Adrian Hardy Haworth
- Hawkes - John Gregory Hawkes
- Hawkins - Julie Ann Hawkins
- Hawksw. - Frank Goode Hawksworth
- Hay - William Perry Hay
- Hayak. - Shiroo Hayakawa
- Hayasaka - Eisuke Hayasaka
- Hayashi - Yasaka Hayashi
- Hayata - Bunzo Hayata
- Hayden - Ferdinand Vandeveer Hayden
- Hayduck - F. Hayduck
- Haye - Anna M. Haye
- Hayek - August von Hayek
- Haynald - Lajos Haynald Cardinal Stephan Franz Lajos Haynald Cardinal Stephan Franz Ludwig Haynald Stephan Franz Ludwig Lajos Haynald
- Hayne - Friedrich Gottlob Hayne
- Haynes - Caroline Coventry Haynes Caroline Conventry Haynes
- Haynie - Nellie Violet Haynie
- Hayren - Ernst Fredrik Hayren
- Haythorn - J.M. Haythorn
- Hayw. - Ida Margaret Hayward
- Hazsl. - Friedrich August Hazslinszky von Hazslin
- H.Baumann - Helmut Baumann
- H.Beltrán - Hamilton Beltrán
- H.B.Guppy - Henry Brougham Guppy
- H.B.K. or H.B. & K. - Alexander von Humboldt Humboldt, Aimé Bonpland Bonpland & Carl Sigismund Kunth Kunth
- H.Blossf. - Harry Blossfeld
- H.B.Matthews - Henry Bleneowe Matthews
- H.B.Mull. - H.B. Muller
- H.Bock - Hieronymus Bock
- H.Boissieu - Henri de Boissieu
- H.Bruggen - Harry van Bruggen Heinrich Wilhelm Eduard van Bruggen
- H.B.Singh - H.B. Singh
- H.Buek - Heinrich Wilhelm Buek
- H.B.Ward - Henry Baldwin Ward
- H.C.Beardslee - Henry Curtis Beardslee, Sr.
- H.C.Bold - Harold Charles Bold
- H.C.Cheng - H.C. Cheng
- H.C.Cutler - Hugh Carson Cutler
- H.C.Evans - Harry Charles Evans
- H.C.F.Schmidt - Heinrich Christian Friedrich Schmidt
- H.C.Hall - Herman Christiaan van Hall
- H.Christ - Konrad Hermann Christ
- H.C.Hu - Hung-Chuen Hu
- H.C.Lima - Haroldo Cavalcante de Lima
- H.Crouan - Hippolyte-Marie Crouan
- H.C.Tang - Hune Cheung Tang
- H.C.Watson - Hewett Cottrell Watson
- H.Dan.Wilson - Hugh Daniel Wilson
- H.D.Clarke - Hugh David Clarke
- H.Deane - Henry Deane (engineer)
- H.De Orléans - Prince Henri of Orléans
- H.D.Gómez - H.D. Gómez
- H.D.Gordon - Hugh Douglas Gordon
- H.Dietr. - Helga Dietrich
- H.Döring - Heidi Döring
- H.D.Rogers - Henry Darwin Rogers
- H.Durand - Hélène Durand
- H.D.Wilson - Hugh Wilson (New Zealand botanist) Hugh Dale Wilson
- Heads - Michael Heads
- H.E.Ahles - Harry E. Ahles
- Hebding - René Hebding
- H.E.Bigelow - Howard E. Bigelow
- Heckel - Édouard Marie Heckel
- Hector - James Hector
- Hedberg - Karl Olov Hedberg
- Hedge - Ian Charleson Hedge
- Hedin - Sven Hedin Sven Anders von Hedin
- Hedjar. - Ghorban-Ali Hedjaroude
- Hedrén - Bo Christer Mikael Hedrén
- Hedrick - Ulysses Prentiss Hedrick
- Hedw. - Johann Hedwig Johannes Hedwig Joannis Hedwig
- Heer - Oswald Heer Oswald von Heer
- Heering - Wilhelm Christian August Heering
- Hegelm. - Christoph Friedrich Hegelmaier
- Hegetschw. - Johannes Jacob Hegetschweiler
- Hegi - Gustav Hegi
- H.E.Hess - Hans E. Hess
- H.E.Huber - Harvey Evert Huber
- H.Eichler - Hansjörg Eichler
- Heil - Hans Albrecht Heil
- Heim - Georg Christoph Heim
- Heimerl - Anton Heimerl
- Heine - Hermann Heino Heine
- Heinr. - Emil Johann Lambert Heinricher
- Heinr.Braun - Heinrich Braun (botanist)
- Heinr.Huber - Heinrich Huber
- Heinr.Schmidt - Heinrich Schmidt
- Heintze - August Heintze
- H.E.Ireland - Helen Elizabeth Ireland
- Heiser - Charles Bixler Heiser
- Heist. - Lorenz Heister
- Heitz - A. Heitz
- H.E.K.Hartmann - Heidrun Hartmann Heidrun Elsbeth Klara Osterwald Hartmann
- Hekking - William Henri Alphonse Maria Hekking
- Heldr. - Theodor Heinrich Hermann von Heldreich Theodor von Heldreich Theodor Heinrich von Heldreich
- Hell. - Carl Niclas Hellenius
- Hellm. - Carl Edward Hellmayr
- Hellq. - Carl Barre Hellquist
- Helms - Richard Helms (naturalist)
- Helwing - Georg Andreas Helwing George Andreas Helwing Jerzy Andrzej Helwing
- Hemadri - Koppula Hemadri
- H.E.Moore - Harold Emery Moore
- Hemprich - Wilhelm Hemprich
- Hellq. - C. Barre Hellquist
- H.E.Luther - Hans Edmund Luther
- Hemsl. - William Hemsley (botanist) William Botting Hemsley
- Hend. - Edward George Henderson
- Hendel - Johann Christian Hendel
- Hendey - Norman Ingram Hendey
- Hendrian - Hendrian
- Hendrych - Radovan Hendrych
- Henfr. - Arthur Henfrey (botanist)
- H.Engel - Heinz Engel
- Henkel - Johann Baptist Henkel
- Henn. - Paul Christoph Hennings
- Henneg. - Louis-Félix Henneguy
- Hénon - Jacques-Louis Hénon
- Henrard - Johannes Theodoor Henrard
- Henrich - James Emil Henrich
- Henrici - Arthur Trautwein Henrici
- Henrickson - James Solberg Henrickson
- Henriq. - Julio Augusto Henriques
- Henry - Aimé Constant Fidèle Henry
- Henry H.Johnst. - Henry Halcro Johnston
- Hensch. - August Wilhelm Eduard Theodor Henschel
- Hensen - Victor Hensen
- Hensl. - John Stevens Henslow
- Henssen - Aino Henssen Aino Marjatta Henssen
- H.E.Petersen - Henning Eiler Petersen Henning Ejler Petersen
- Hepper - Frank Nigel Hepper
- Hepting - George H. Hepting George Henry Hepting
- Herdman - E. Catherine Herdman
- Heredia - Gabriela Heredia
- Herend. - Patrick S. Herendeen
- Hergt - Johann Ludwig Hergt
- Herb. - William Herbert (botanist)
- Herb.H.Sm. - Herbert Huntington Smith Herbert Huntingdon Smith
- Herbich - Franz Herbich
- Herborg - Joachim Herborg J. Herborg
- Herbst - William Herbst
- Herder - Ferdinand Gottfried Theobald Herder
- Hérincq - François Hérincq
- Hering - Constantine Hering Constantijn Hering Constantine J. Hering Constantijn J. Hering
- Heringer - Ezechias Paulo Heringer
- Herink - Josef Herink
- Herklots - Geoffrey Herklots Geoffrey Alton Craig Herklots
- Herm. - Paul Hermann
- Hern.Cam. - Jorge Hernández Camacho
- Hern.-Xol. - Effraim Ildefonso Hernández-Xolocotzi Guzman
- Herre - Albert William Christian Theodore Herre
- Herrera - Fortunado Luciano Herrera y Garmendia
- Herrero - Alberto Herrero
- Herrm. - Johann Hermann Johann Herrmann Jean Hermann
- Herr.-Schaeff. - Gottlieb August Wilhelm Herrich-Schäffer
- Hers - Joseph Hers
- Hertel - Hannes Hertel
- Herter - Wilhelm Gustav Franz Herter Wilhelm Franz Herter Guillermo Gustavo Francis Herter
- Hertlein - Leo George Hertlein
- Hertrich - William Hertrich
- Hertsch - Hermann Hertsch
- Hertus - Paval Hertus
- Hertwig - Richard Hertwig
- Herv. - Alpheus Baker Hervey
- Hervier - Gabriel Marie Joseph Hervier-Basson
- Herzog - Theodor Carl Julius Herzog T. K. G. Herzog
- Hesler - Lexemuel Ray Hesler
- Hesl.-Harr. - John William Heslop-Harrison
- Hesl.-Harr.f. - Jack Heslop-Harrison John Heslop-Harrison
- Heslot - Henri Heslot
- Hespenh. - Henry August Hespenheide
- Hess - Johann Jakob Hess (botanist)
- Hesse - Hermann Albrecht Hesse
- Hesselbo - August Hesselbo
- Hett. - Wilbert Hetterscheid
- Heubl - Günther Heubl
- Heuch. - Johann Heinrich von Heucher
- Heuff. - János A. Heuffel
- Heufl. - Ludwig Samuel Joseph David Alexander Heufler zu Rasen und Perdonneg
- Heugel - Carl August Heugel
- Heward - Robert Heward
- H.E.White - Harold Everett White Harold Everett
- Hewson - Helen Joan Hewson
- Heybroek - Hans M. Heybroek
- Heyden - E.van der Heyden
- Heyder - Edward Heyder
- Heynh. - Gustav Heynhold
- Heywood - Vernon Hilton Heywood
- H.F.Comber - Harold Frederick Comber
- H.F.Copel. H.F.Copeland - Herbert Copeland Herbert Faulkner Copeland
- H. & B. - Friedrich Alexander von Humboldt Humboldt & Aimé Jacques Alexandre Bonpland Bonpland
- H.F.Decker - Henry Fleming Decker
- H.Fisch. - Hugo Fischer
- H.Fleischm. - H. Fleischmann
- H.F.Lewis - Harrison Flint Lewis
- H.F.Loomis - Harold F. Loomis H.F. Loomis
- H.Friedrich - Heimo Friedrich
- H.Fürnr. - Heinrich Fürnrohr
- H.G.Baker - Herbert George Baker
- H.G.Diem - Hoang G. Diem
- H.Girard - Henri Girard
- H.G.Jones - Henry G. Jones
- H.G.P.Duyfjes - Hendrik Gerard Pieter Duyfjes
- H.Groves - Henry Groves
- H.G.Sm. - Henry George Smith
- H.Hall - Herman van Hall
- H.Hara - Hiroshi Hara (botanist)
- H.Hartmann - Hans Hartmann
- H.H.Blom - Hans Haavardsholm Blom
- H.H.Dixon - Henry Horatio Dixon
- H.H.Eaton - Hezekiah Hulbert Eaton
- H.Henkel - Heinrich Henkel
- H.Hesl.-Harr. - Helena Heslop-Harrison
- H.H.Hall - Harlow H. Hall
- H.H.Hume - Harold Hume Hardrada Harold Hume
- H.H.Hsue - Hsiang Hao Hsue
- H.H.Iltis - Hugh Hellmut Iltis
- H.H.Johnst. - Harry Johnston Henry Hamilton Johnston
- H.H.Lin - Hong Hui Lin
- H.Hoffm. - Heinrich Karl Hermann Hoffmann
- H.Hofm. - Hermann Hofmann
- H.H.Schmidt - Heidi H. Schmidt
- H.H.Scott - H.H. Scott
- H.H.Thomas - Hugh Hamshaw Thomas
- H.Huber - Herbert Huber (botanist) Herbert Franz Josef Huber
- H.H.Hume - Hardrada Harold Hume
- H.H.White - Henry Hoply White
- Hibberd - James Shirley Hibberd
- Hibbits - Jolly Hibbits
- Hickel - Paul Robert Hickel
- Hicken - Cristóbal María Hicken
- Hiepko - Paul Hubertus Hiepko
- Hiern - William Philip Hiern
- Hieron. - Georg Hans Emmo Wolfgang Hieronymus
- Hiesey - William McKinley Hiesey
- Hiitonen - Henrik Ilmari Augustus Hiitonen
- H.Ikeda - Hiroshi Ikeda (botanist)
- Hildebr. - Friedrich Hermann Gustav Hildebrand
- Hildebrandt - Johann Maria Hildebrandt
- Hilend - Martha Luella Hilend
- Hilger - Hartmut H. Hilger
- Hill - John Hill (botanist)
- Hillebr. - William Hillebrand Wilhelm B. Hillebrand Wilhelm Hillebrand
- Hillebrandt - Franz Hillebrandt
- Hilliard - Olive Mary Hilliard
- H.I.Maass - H.I. Maass
- Hildm. - H. Hildmann
- Hillc. - Jean Olive Dorothy Hillcoat
- Hillh. - William Hillhouse
- Hilliard - Olive Mary Hilliard
- Hils. - Karl Theodor Hilsenberg
- H.Iltis - Hugo Iltis
- Hinds - Richard Brinsley Hinds
- Hinz - P.-A. Hinz
- Hirales - Sergió A. Hirales
- Hirane - Seiichi Hirane
- Hirano - Minoru Hirano
- Hirata - Koji Hirata
- Hirats. - Naoharu Hiratsuka
- Hirats.f. - Naohide Hiratsuka
- Hirn - Karl Engelbrecht Hirn
- Hiroë Hiroe - Isamu Matsuura Hiroë
- Hir.Takah. - Hiroshi Takahashi
- Hirth - Alfred Hirth
- Hirtz - Alexander C. Hirtz
- H.I.Schäf. - H.I. Schäfer
- Hising. - Wilhelm Hisinger
- Hitchc. - Albert Spear Hitchcock
- H.Itô H.Ito - Hiroshi Itô Ito Hiroshi
- H.Jacobsen - Hermann Johannes Heinrich Jacobsen
- H.Jaeger - Hermann Jaeger Hermann Jäger
- H.Jäger - Heinke Jäger
- H.J.Atkins - Hannah Jane Atkins
- H.J.Br. - Helen Jean Brown
- H.J.Carter - Herbert James Carter
- H.J.-C.Hebert - H.J.-C. Hebert
- H.J.Chowdhery - Harsh J. Chowdhery
- H.J.Coste - Hippolyte Coste
- Hjelmq. - Karl Jesper Hjelmquis
- Hjert. - Jens Peter Knudsen Hjerting
- H.J.Howard - Henry J. Howard
- H.J.Lam - Herman Johannes Lam
- H.J.Li - Hui Jun Li
- H.Johnson - Joseph Harry Johnson
- H.J.P.Winkl. - Hubert J.P. Winkler
- H.J.Quero - Hermilo J. Quero
- H.J.Thomps. - Henry Joseph Thompson
- H.J.Veitch - Harry James Veitch
- H.Karst. - Gustav Hermann Karsten Gustav Karl Wilhelm Hermann Karsten
- H.K.A.Winkl. - Hans Winkler Hans Karl Albert Winkler
- H.Keng - Hsüan Keng
- H.Koch - Heinrich Koch
- H.Kost. - Henry Koster (author) Henrique da Costa Henri Koster
- H.Koyama - Hiroshige Koyama
- H.Kretzschmar - Horst Kretzschmar
- H.Kunze - Henning Kunze
- H.Kurz - Hermann Kurz (botanist)
- H.K.Walter - Heinrich Walter Heinrich Karl Walter
- Hladnik - Franz Hladnik
- H.L.Bauer - Harry Lloyd Bauer
- H.L.Blomq. - Hugo Leander Blomquist
- H.Lév. - Hector Léveillé Augustin Hector Léveillé Augustin Abel Hector Léveillé
- H.Lewis - Harlan Lewis
- H.L.Foster - H. Lincoln Foster
- H.Li - Hen Li
- H.Limpr. - Hans Wolfgang Limpricht
- H.Lindb. - Harald Lindberg
- H.L.Jacobs - Homer L. Jacobs
- H.L.Jones - Herbert Lyon Jones
- H.L.Li - Hui Lin Li
- H.Lorentz - Hendrik Lorentz Hendrik Anton Lorentz
- H.Low - Hugh Low
- H.L.Sm. - Hamilton Lanphere Smith
- H.L.Späth - Hellmut Ludwig Späth Helmut Ludwig Späth
- H.Luther - Harry Luther Harry E. Luther
- H.L.Wendl. - Heinrich Wendland Heinrich Ludolph Wendland
- H.L.White - Heather L. White
- H.L.Wilson - Harriet L. Wilson
- H.Mann - Horace Mann Jr.
- H.Mason - Herbert Louis Mason
- H.M.Curran - Hugh McCullum Curran
- H.Mend. - Hartman Mendoza
- H.M.Ferreira - Hilda Manhâ Ferreira
- H.M.Hall - Harvey Monroe Hall
- H.M.Hern. - Héctor Manuel Hernández Héctor Hernández Macías
- H.Michel - Henri Michel (botanist)
- H.M.Li - He Min Li
- H.Moseley - Henry Nottidge Moseley
- H.M.Quirk - Helen Mary Quirk
- H.Müll. - Heinrich Ludwig Hermann Müller
- H.M.Shen - Hong Mei Shen
- H.M.Ward - Harry Marshall Ward
- H.M.Werner - H.M. Werner
- H.-M.Wheeler - Helen-Mar. Wheeler
- H.N.Andrews - Henry Nathaniel Andrews
- Hnatiuk - Roger Hnatiuk Roger James Hnatiuk
- H.Nicholson - Henry Alleyne Nicholson
- Hoare - Cecil A. Hoare
- Hobdy - R.W. Hobdy
- Hobson - Edward Hobson (botanist)
- Hoc - Patricia S. Hoc
- Hoch - Peter C. Hoch
- Hochr. - Bénédict Pierre Georges Hochreutiner
- Hochst. - Christian Ferdinand Hochstetter Christian Ferdinand Friedrich Hochstetter
- Hodgs. - William Hodgson
- Hodk. - Trevor Hodkinson
- Hoef. - Jean Chrétien Ferdinand Hoefer
- Hoefker - Heinrich Hoefker
- Høeg - Ove Arbo Høeg
- Hoehne - Frederico Carlos Hoehne
- Hoess - Franz Höss
- Hoevel - Otto Hövel
- Hoeven - Jan van der Hoeven
- Hoffm. - Georg Franz Hoffmann
- Hoffman - Ralph Hoffman
- Hoffmanns. - Johann Centurius Hoffmannsegg Johann Centurius von Hoffmannsegg
- Hoffmeister - Werner Hoffmeister
- Hoffstad - Olaf Alfred Hoffstad
- Hofm. - Eduard Hofmann
- Hofmeist. - Wilhelm Hofmeister Wilhelm Friedrich Benedict Hofmeister
- H.O.Forbes - Henry Ogg Forbes
- Hofreiter - Anton Hofreiter
- Hofst. - Adrian Marie Hofstetter
- Hofstätter - Siegfried Hofstätter
- Hofsten - Angelica v. Hofsten
- Hofstra - J. Hofstra
- Hogg - Thomas Hogg (botanist)
- H.Ohashi - Hiroyoshi Ohashi
- H.Ohba - Hideaki Ohba
- Hohen. - Rudolph Friedrich Hohenacker
- Hohenw. - Sigismund von Hohenwarth
- Höhn. - Franz Xaver Rudolf von Höhnel
- Holandre - Jean Joseph Jacques Holandre
- Holford - sir George Holford
- Holl - Friedrich Holl
- Holland - John Henry Holland (botanist)
- Hollande - André-Charles Hollande
- H.Øllg. - Hans Øllgaard
- Hollick - Charles Arthur Hollick
- Holloway - John Ernest Holloway
- Holm - Herman Theodor Holm
- Holmb. - Otto Rudolf Holmberg
- Holmboe - Jens Holmboe
- Holmes - Edward Morell Holmes
- Holmgren - Hjalmar Josef Holmgren
- Holm-Niels. - Lauritz B. Holm-Nielsen Lauritz Broder Holm-Nielsen Lauritz Holm-Nielsen
- Holmsk. - Johan Theodor Holmskjold Theodor Holmskjold
- Holthuis - Lipke Bijdeley Holthuis
- Holttum - Richard Eric Holttum
- Holub - Josef Holub Josef Ludwig Holub
- Holub bis - Josef Holub
- Holyoak - David T. Holyoak
- Holzapfel - Christina Marie Holzapfel
- Hombr. - Jacques Bernard Hombron
- Homolle - Anne-Marie Homolle
- Honck. - Gerhard August Honckeny
- Honda - Masaji Honda
- Honey - Edwin Earle Honey
- Hong Liu - Hong Liu
- Hongo - Tsuguo Hongo
- Hong Z.Li - Hong Zhe Li
- Hoog - Johannes Marius Cornelis Hoog
- Hoogland - Ruurd Dirk Hoogland
- Hook. - William Jackson Hooker
- Hook.f. - Joseph Dalton Hooker
- Hoover - Robert Francis Hoover
- Hoppe - David Heinrich Hoppe
- Hopper - Stephen Hopper Stephen Donald Hopper
- Hoque - Akramul Hoque
- Hora - Frederich Bayard Hora
- Horácek - Ladislav Horácek
- Horák Horak - Bonslaw Horák Bonslaw Horak
- Horan. - Paul Fedorowitsch Horaninow Pável Gorianinov Pavel Gorianinov
- Horanszky - Andreas Horanszky
- Horik. - Horikawa Yoshiwo
- Horkel - Johann Horkel
- Hornem. - Jens Wilken Hornemann
- Horner - Harry Theodore Horner
- Hornsch. - Christian Friedrich Hornschuch
- Hornst. - Claës Fredric Hornstedt
- Horobin - John F. Horobin
- Horsf. - Thomas Horsfield
- Hort - Fenton John Anthony Hort
- hort. - of gardeners; Hortorum Hortulanorum
- Horv. - Tsigmond Horvátovszky
- Horvat - Ivo Horvat
- Horvatic - Stjepan Horvatic
- Hosack - David Hosack
- Hosaka - Edward Yataro Hosaka
- H.Osborn - Henry Stafford Osborn
- Hosius - August Hosius
- Hosok. - Takahide Hosokawa
- Hosoya - Tsuyoshi Hosoya
- Hosseus - Carl Curt Hosseus
- Höss - Franz Höss
- Host - Nicolaus Thomas Host
- H.O.Stephens - Henry Oxley Stephens
- Hösterm. - Gustav Höstermann
- Hough - Romeyn Beck Hough
- Houghton - Arthur Duvernoix Houghton
- Houlbert - Constant Vincent Houlbert
- Houllet - Jean-Baptiste Houllet Jean Baptiste Houllet
- House - Homer Doliver House
- Houst. - William Houstoun (botanist)
- Houtt. - Martinus Houttuyn Maarten Houttuyn
- Houtz. - Gysbertus Houtzagers
- Houz. - Jean-Charles Houzeau de Lehaie
- Hovel. - Maurice Jean Alexandre Hovelacque
- Howard - John Eliot Howard
- Howe - Elliot Calvin Howe Eliot Calvin Howe
- Howell - Thomas J. Howell (botanist) Thomas Jefferson Howell
- H.O.Yates - Harris Oliver Yates
- H.P.Banks - Harlan Parker Banks
- H.Pearson - Henry Harold Welch Pearson
- H.Peng - Hua Peng
- H.Perrier - Henri Perrier de La Bâthie Joseph Marie Henry Alfred Perrier de la Bâthie
- H.Pfeiff. - Hans Heinrich Pfeiffer
- H.P.Fisch. - H.P. Fischer
- H.P.Fröes - Heitor Prayuer Fröes
- H.P.Fuchs - Hans Peter Fuchs-Eckert Hans Peter Fuchs
- H.P.G.Koch - Hans Peter Gyllembourg Koch
- H.P.Guérin - Henry P. Guérin
- H.P.Kelsey - Harlan Page Kelsey
- H.P.Lewis - Herbert Price Lewis
- H.P.Linder - Hans Peter Linder
- H.Post - Hampus Adolf von Post
- H.Pottinger - Henry Pottinger
- H.Prat - Henri Prat
- H.P.Riley - Herbert Parkes Riley
- H.P.Singh - H.P. Singh
- H.P.Tsui - Hung Pin Tsui
- H.Q.B.Fern. - Helio de Queiroz Boudet Fernandes
- H.R.Fletcher - Harold Roy Fletcher
- H.Rob. - Harold E. Robinson Harold Ernest Robinson
- H.Rock - Howard Francis Leonard Rock
- H.Rose - Hugh Rose
- H.Rosend. - Henrik Viktor Rosendahl
- H.R.Reinhard - Hans R. Reinhard
- H.R.Rosen - Harry Robert Rosen
- H.R.Schmidt - Hermann Rudolph Schmidt
- H.R.Sweet - Herman Royden Sweet
- H.R.Wehrh. - Heinrich Rudolf Wehrhahn
- Hryn. - Boleslaw Hryniewiecki
- H.Schaef. - Hanno Schaefer
- H.Schmidt - H. Schmidt
- H.Schmidt Elberf. - Hermann Schmidt Hermann Schmidt (botanist)
- H.Schneid. - Harald Schneider
- H.Scholz - Hildemar Wolfgang Scholz
- H.Schott - Heinrich Schott !Schott
- H.Schulz - Hermann Schulz
- H.S.Davis - Herbert Spencer Davis
- H.S.Gill - H.S. Gill
- H.Sharsm. - Helen Sharsmith Helen Katherine Sharsmith
- H.Shaw - Henry Shaw (philanthropist)
- H.Sibth. - Humphry Sibthorp (botanist) Humphry Waldo Sibthorp Humphrey Sibthorp Humphrey Waldo Sibthorp
- H.Simon - Hans Simon
- H.Singh - Harnek Singh
- H.S.Irwin - Howard Samuel Irwin
- H.S.Kiu - Hua Shing Kiu
- H.S.Liu - Heng Shen Liu
- H.S.Lo - Hsien Shui Lo
- H.Solheim - Halvor Solheim
- H.Spaeth - Hannelore Spaeth
- H.Steedman - Henry Steedman
- H.S.Thomps. - Harold Stuart Thompson
- H.St.John - Harold St. John Harold St.John
- H.Sund. - Hans Sundermann
- H.Thomas - Hermann Thomas
- H.T.Li - Hong Tao Li
- H.Turner - Hubert Turner
- Hu - Hu Xiansu Hu Hsien-Hsu Hsen Hsu Hu
- Hua - Henri Hua
- Hua Li - Hua Li
- Huamantupa - Isau Huamantupa Chuquimaco
- Huard - Jean Huard
- Hubálek - Zdenek Hubálek
- Hubeny - Joseph Hubeny
- Huber - Jacques Huber Jakob Huber Jakob (Jacques) E. Huber
- Hub.-Mor. - Arthur Huber-Morath
- Hub.-Pest. - Gottfried Huber-Pestalozzi Gottfried Eduard Huber-Pestalozzi
- Hughes - Dorothy Kate Hughes
- Huds. - William Hudson (botanist)
- Hue - Auguste-Marie Hue Auguste Marie Hue
- Hueber - Francis Maurice Hueber
- Hügel - Carl von Hügel Carl Alexander Anselm von Hügel Karl von Hügel Karl Alexander Anselm von Hügel
- Huisman - John Marinus Huisman
- Hultén - Eric Hultén Oskar Eric Gunnar Hultén
- Humb. - Alexander von Humboldt
- Humbert - Henri Jean Humbert Jean-Henri Humbert
- Humberto Mend. - Humberto Mendoza (botanist)
- Humblot - Léon Humblot
- Hume - Allan Octavian Hume
- Humm - Harold Judson Humm
- Hummel - Edward C. Hummel
- Hummelinck - Pieter Wagenaar Hummelinck
- Humphries - Chris Humphries Christopher John Humphries
- Hunger - Susanne Hunger
- Hung T.Chang - Hung Ta Chang
- Hunt - George Edward Hunt (botanist)
- Hunter - Alexander Hunter
- Hunz. - Armando Theodoro Hunziker
- Hürl. - Hans Hürlimann (botanist)
- Hurst - Charles Chamberlain Hurst
- Hurus. - Isao Hurusawa
- Hus - Henri Theodore Antoine de Leng Hus
- Husn. - Pierre Tranquille Husnot
- Husseinov - Sch. A. Husseinov
- Hussenot - Louis Cincinnatus Sévérin Léon Hussenot
- Husson - A. M. Husson
- Hust. - Friedrich Hustedt
- Husz - Béla Husz
- Hutch. - John Hutchinson (botanist)
- Huter - Rupert Huter
- Huth - Ernst Huth
- H.T.Hu - Hung-Tao Hu
- Hutton - William Hutton (1797–1860)
- Huxley - Anthony Julian Huxley
- H.V.Hansen - Hans Vilhelm Hansen
- H.Vilm. - Henry de Vilmorin Charles Philippe Henry Lévêque de Vilmorin
- H.W.Anderson - Harvey Warren Anderson
- H.W.Bisch. - Harry William Bischoff
- H.W.Clark - Howard Walton Clark
- H.West - Hans West
- H.W.Howard - Harold W. Howard
- H.Wegener - H. Wegener
- H.Wei Jen - Hsien Wei Jen
- H.Weiss - Heinrich Weiss
- H.Wendl. - Hermann Wendland
- H.Werner - H. Werner
- H.Whitehouse - Harold Leslie Keer Whitehouse
- H.Whittier - Henry O. Whittier
- H.Wiley - Henry Wiley
- H.Wilke - Hermann Wilke
- H.Winkl. - H. Winkler
- H.Witte - Hernfrid Witte Bror Otto Hernfrid Witte
- H.W.Johans. - Hans William Johansen
- H.W.Keller - Harold Willard Keller
- H.W.Kurz - Holger Willibald Kurz
- H.W.Li - Hsi Wen Li
- H.Wolff bis - H. Wolff
- H.W.Sarg. - Henry Winthrop Sargent
- H.Wulff - Heinz Diedrich Wulff
- H.W.Ward - Henry William Ward
- H.X.Liu - Hong Xian Liu
- Hy - Félix Charles Hy
- Hyl. - Nils Hylander
- H.Y.Liu - Ho Yih Liu
- H.Y.Su - Ho Yi Su
- Hyvönen - Jaakko Hyvönen
- H.Zimm. - Hugo Zimmermann
- H.Z.Li - Hui Zhong Li
- H.Zorn - Helmut Zorn
I
edit- I.A.Abbott - Isabella Aiona Abbott
- Iacob - Viorica C. Iacob
- Iacobescu - Nicolae Iacobescu
- Iaconis - Celina L. Iaconis
- I.A.Fernández - Inés Álvarez Fernández
- I.A.N.Lucas - I.A.N. Lucas
- I.A.Pilát - Ignatz Anton Pilát
- I.Arias - Ileana Arias
- I.Arroyo - Irene Arroyo
- Iatroú - Gregory Iatroú
- I.A.Williams - Iolo Aneurin Williams
- I.Baker - Irene Baker (botanist)
- Ibáñez - Joaquín Ibáñez
- Ibarra - Florinda E. Ibarra
- Ibarra-Manr. - Guillermo Ibarra-Manríquez
- Ibbots. - Henry Ibbotson
- Ibisch - Pierre Leonhard Ibisch Pierre L. Ibisch
- I.Bjørnstadt I.Björnstadt – Inger Nordal (!also Nordal)
- Ibn Tattou - Mohammed Ibn Tattou
- Ibrahim - Halijah Ibrahim
- I.C.Harv. - I.C. Harvey
- Ichaso - Carmen Lúcia Falcao Ichaso
- Ichik. - Wataru Ichikawa
- Ichikawa - Kazunori Ichikawa
- Ichinoe - Masakatsu Ichinoe
- Ichit. - Takio Ichitani
- I.C.Martind. - Isaac Comly Martindale
- I.C.Nielsen - Ivan Christian Nielsen
- I.Darbysh. - Iain Darbyshire
- Idarraga - Alvaro Idarraga-Piedrahita
- Ide - Kiyoharu Ide
- I.Deg. - Isa Degener
- Ideta - Arata Ideta
- Idrobo - Jesus Medrado Idrobo
- I.D.Singh - I.D. Singh
- I.E.Méndez - Isidro E. Méndez
- Ietsw. - Jaan H. Ietswaart J.H. Ietswaart
- I.Fern. - Irene Fernandes
- I.Fisch. - Ida Fischer
- I.F.Lewis - Ivey Foreman Lewis
- Igarashi - Tsuneo Igarashi
- I.García - Ignacio García Ruiz
- Igersheim - Anton Igersheim
- Iglesias - Carlos G. Iglesias
- Igmándy - J. Igmándy
- Ignat. - M. Ignataviciute
- Ignatov - Mikhail S. Ignatov Mikhail Stanislavovich Ignatov Mikhail (Misha) S. Ignatov
- Igolkin - G.I. Igolkin
- Igoschina - Kapitolina Nikolaevna Igoshina
- I.Gruber - Ilse Gruber
- I.G.Stone - Ilma Grace Stone
- Iguchi - Takashi Iguchi
- I.Hagen - Ingebrigt Severin Hagen
- Iharl. - Laura Iharlegui
- Ihlen - Per Gerhard Ihlen
- Ihlenf. - Hans-Dieter Ihlenfeldt
- I.H.Lima - Iracema Hollanda Lima
- I.H.Müll. - Iris H. Müller
- Ihnat. - A. Ihnatowicz
- I.I.Abramov - Ivan Ivanovich Abramov
- I.Ibáñez - Inés Ibáñez
- Iinuma - Yokusai Iinuma
- I.Ito - Itaru Ito
- I.Johans. - Inger Johansen
- Ikari - Jiro Ikari
- Ikata - Suehiko Ikata
- Ikebe - Chikako Ikebe
- Ikeda - K. Ikeda
- I.Keller - Ida Augusta Keller
- Ikeno - Seiichiro Ikeno
- I.Kiss - István Kiss
- Ikonn. - Sergei Sergeevich Ikonnikov
- Ikonn.-Gal. - Nikolai Petrovic Ikonnikov-Galitzky
- Ik.Takah. - Ikuro Takahashi (botanist)
- Ikramov - M.I. Ikramov
- Ilgaard - Benjamin Ilgaard
- Iliescu - Constantin Horia Teodor Iliescu
- Iliff - James Iliff
- Iljin - Modest Mikhailovich Iljin Modest Mikhailovic Iljin
- Iljinsk. - I.A. Iljinskaja
- Iljinski - Alexei Porfirievic Iljinsky
- Ilk.-Borg. - Anna Luiza Ilkiu-Borges
- Illana - Carlos Illana
- Illario - Teresina Illario
- Illg - Rolf Dieter Illg
- Illick - Joseph Simon Illick
- Illitsch. - S. Illitschevsky
- Illman - William Irwin Illman
- I.Löw - Immanuel Löw
- Ilse - Hugo Ilse
- Iltis - Hugh Iltis Hugh Hellmut Iltis
- I.MacFarl. - I. MacFarlane
- I.Martínez - Isabel Martínez Isabel Martínez (botanist)
- Imbach - Emil J. Imbach
- I.M.Hall - Irvin M. Hall
- I.M.Johnst. - Ivan Murray Johnston
- I.M.Johnstone - Ian M. Johnstone
- Imlay - George Gilbert Imlay
- Immelman - Kathleen Leonore Immelman
- I.M.Oliv. - Inge Magdalene Oliver
- I.M.Turner - Ian Mark Turner
- I.Müll. - I. Müller
- I.M.Wilson - Irene M. Wilson
- Incarv. - Pierre Nicolas d'Incarville Pierre Nicolas le Chéron d'Incarville Pierre Nicolas Le Chéron d'Incarville
- Infantes - Juana G. Infantes Vera
- Ingold - Cecil Terence Ingold
- Ingram - Collingwood Ingram
- I.Nogueira - Isabel Mariana Simões Nogueira
- Inoue - Hiroshi Inoue Inoue Hiroshi
- I.Oliv. - Ian Oliver (botanist)
- I.Pop - Ioan Pop (botanist)
- I.Preston - Isabella Preston
- I.Ramírez - Ivón Mercedes Ramírez Morillo
- I.Rácz - István Rácz István Rácz (botanist)
- Irani - N.A. Irani
- Iranshahr - Mousa Iranshahr
- Iranzo - Julio Iranzo Reig
- Ireland - Robert Root Ireland
- Irénée-Marie - Thomas Joseph Caron Irénée-Marie
- Irgang - Bruno Edgar Irgang
- I.R.Hall - Ian R. Hall
- I.Riedl - Ingrid Riedl
- Irigoyen - Luis H. Irigoyen
- Irish - Henry Clay Irish
- Irizawa - T. Irizawa
- Irlet - B. Irlet
- Irmisch - Johann Friedrich Thilo Irmisch
- Irmsch. - Edgar Irmscher
- I.Rojas - Isabel Rojas
- Irvine - Alexander Irvine
- Irving - E.G. Irving
- Irwin - James Bruce Irwin
- Isaac - Frances Margaret Leighton Frances Margaret Isaac (!also F.M.Leight.) (married with W.E.Isaac - William Edwyn Isaac)
- Isab. - Arsène Isabelle
- I.Salinas - Irayda Salinas
- I.Santos - Inês da Silva Santos
- I.Sastre - Ines Sastre (botanist)
- I.Schischk. - Ivan Kusmich Schischkin
- I.Schmidt - I. Schmidt
- I.Scholz - Ilse Scholz
- Isert - Paul Erdmann Isert
- I.Sinclair - Isabella Sinclair
- Ising - Ernest Horace Ising
- Isnard - Antoine-Tristan Danty d'Isnard
- I.S.Nelson - Ira Schreiber Nelson
- I.Sprague - Isaac Sprague
- Issel - Raffaele Issel
- Issler - Émile Issler
- I.Thomps. - Ian R. Thompson
- Ito - Keisuke Ito Ito Keisuke
- I.V.Belyaeva - Irina Veniaminovna Belyaeva
- Ivens - A.J. Ivens
- I.Verd. - Inez Clare Verdoorn
- Iversen - Johannes Iversen
- Ives - Joseph Christmas Ives
- I.V.Hall - Ivan Victor Hall
- Ivimey Cook - Walter Robert Ivimey Cook
- Iwanoff - Leonidas Iwanoff
- I.W.Bailey - Irving Widmer Bailey
- I.W.Hutchison - Isobel Wylie Hutchison
- I.Williams - Ion James Muirhead Williams
- Izag. - Primavera Izaguirre
- Izco - Jesús Izco
- Izhb. - L.A. Izhboldina
- Izuzq. - Álvaro Izuzquiza