Botanists
⧼Botanists⧽
- Lone Aagesen
- Lewis Eldon Aalders
- Aaron Aaronsohn
- Hannah Caroline Aase
- Ivar Aasen
- Sabaheta Abadžić
- José E. Abalo
- Delia Abbiatti
- Charles Abbot
- John Abbot
- John Richard Abbott
- Moustafa Sayed-Ahmed Abdallah
- Kadry Nabeh El Sayed Abdel Khalik
- Saule A. Abdulina
- Makhmuza Nuritdinovna Abdullaeva
- Lira Nabievna Abdusalyamova
- Chikaichi Abe
- Sadao Abe
- Sultanul Abedin
- Clarke Abel
- Othenio Abel
- Analisa Daniela Abele
- Nimantha Aberathna
- Bartholomeusz Aristides Abeywickrama
- Rubina Abid
- Robert Ivanovich Abolin
- Komla Elikplim Abotsi
- Arnfried Abraham
- Joseph Mannamparambil Abraham
- Wolf Rainer Abraham
- Stefan Abrahamczyk
- Nikolay Vasilievich Abramov
- Anastasia Lavrentievna Abramova
- Lyudmila Ivanovna Abramova
- Svetlana Nikolaevna Abramova
- LeRoy Abrams
- Joana Isabel Alberto Abreu
- Johannes Abromeit
- Zeki Acar
- Juan Ramón Acebes
- Amparo Acebey
- Carmen Acedo Casado
- Giuseppe Acerbi
- Rebeca Acevedo
- Aurelio Acevedo-Rodríguez
- Raúl Acevedo-Rosas
- Pedro Acevedo-Rodríguez
- Serena Isabel Achá
- Nabin Acharya
- Enoch Achigan-Dako
- Frédéric Achille
- Gaston Achoundong
- Boris Todorov Achtarov
- Agasi Asaturovich Achverdov
- Rachel Acil
- Jennifer Ackerfield
- James David Ackerman
- Jacob Fidelis Ackermann
- Markus Ackermann
- Salvador Acosta Castellanos
- Zenia Acosta Ramos
- Christobal Acosta
- Juan M. Acosta
- Julián Baldomero Acuña Galé
- Margoth E. Acuña Tarazona
- Marco Acuña
- Rafael H. Acuña-Castillo
- Kent T. Adair
- Jacques-Georges Adam
- Jumaat Haji Adam
- Vladimir Vladimirowitsch Adamov
- Lujo Adamović
- Wojciech Adamowski
- Bryan Roger Adams
- Charles Dennis Adams
- Johannes Michael Friedrich Adams
- Joseph Edison Adams
- Laurence George Adams
- Peter Barry Adams
- Ralph M. Adams
- Robert Phillip Adams
- William Preston Adams
- Robert Stephen Adamson
- Michel Adanson
- Albert George Ludwig Adelbert
- Fredericus Arnoldus Constantin Basil Adema
- Bhaskar Adhikari
- Bhupendra Singh Adhikari
- Nezaket Adıgüzel
- Édouard Joshua Adjanohoun
- Nina Avgustinovna Adolf
- Henning Adsersen
- Avinash Asraji Adsul
- Mahfouz Advay
- Teshabaj Adylovich Adylov
- Carlos Aedo Pérez
- Paul Aellen
- Konstantin Sergeyevich Afanassiev
- Massimo Afferni
- James M. Affolter
- Saeed Afsharzadeh
- Zara Afzal-Rafii
- Adam Afzelius
- Karl Rudolf Afzelius
- Pehr Conrad Afzelius
- Mariam V. Agababjan
- Natalia Dmitrievna Agapova
- Francisco Agcaoili
- John Michael Agcaoili
- Vladimir Naumovich Aggeenko
- Andrew David Quentin Agnew
- Priyanka Agnihotri
- Esperanza Maribel Guiao Agoo
- Giuseppe Agosti
- Getulio Agostini
- Maria de Fátima Agra
- Dinesh Kumar Agrawala
- Ennio Agrezzi
- Carlos Alberto Agudelo-H.
- Ana Cristina Andrade de Aguiar
- Carlos Francisco Gonçalves Aguiar
- João Marcelo Robazzi Bignelli Valente Aguiar
- Joaquim Macedo de Aguiar
- Osny Tadeu Aguiar
- Reinaldo Alexis de Jesús Aguilar Fernández
- Jaime Aguilar
- Jose Aguilar-Cano
- Remedios Aguilar-Santelises
- Antoni Aguilella
- Ernesto Aguirre León
- Zhofre Huberto Aguirre Mendoza
- Adriana Carolina Aguirre-Morales
- Ignacio Aguirre-Olavarrieta
- Julián Aguirre-Santoro
- Harry E. Ahles
- Frederik Elias Ahlfvengren
- Habib Ahmad
- Saman A. Ahmad
- Mokter Ahmed
- Leslie Walter Allam Ahrendt
- Luisa Zulema Ahumada
- Dietmar Ernst Aichele
- Annette Aiello
- Whitelaw Ainslie
- Herbert Kenneth Airy Shaw
- Aisahtul binti Wardi
- Mohamd Ait-Hammou
- Adriana M. Aita
- Makarand Mohanrao Aitawade
- James Edward Tierney Aitchison
- Eona Aitken
- William Aiton
- William Townsend Aiton
- Iñaki Aizpuru
- Yousef Ajani
- Emine Akalın
- Hasan Akan
- Yoshiyuki Akasawa
- Galip Akaydın
- Kenan Akbaş
- Ekrem Akçiçek
- Oznur Ergen Akcin
- Laurent Aké Assi
- John Robert Akeroyd
- John Frank Akers
- Gencay Akgül
- Maia Akhalkatsi
- Hossein Akhani
- Azadeh Akhavan
- F.A. Akhmed-Zade
- Pitra Akhriadi
- Ivan Jakovlevic Akinfiev
- Shigeo Akiyama
- Shinobu Akiyama
- Ünal Akkemik
- Reiner W.A.P. Akkermans
- Akpovi Akoègninou
- Janna Akopian
- H. Askin Akpulat
- Özkan Aksakal
- Ahmet Aksoy
- Necmi Aksoy
- Nursen Aksu Kalmuk
- Ekrem Aktoklu
- Berrin Akyıldırım
- Abdul-Karim K.A. Al-Bermani
- Dawud M. Al-Eisawi
- A.H.E. Al-Musawi
- Ali Al-Rawi
- Ihsan A. Al-Shehbaz
- Rafida Abdulla Al-Taey
- Turki Ali Al-Turki
- Dhafer Ahmed Al-Zahrani
- Jan Alam
- M.K. Alam
- Lúcas Alamán
- Sevim Alan
- Diego Alarcón
- María Luisa Alarcón
- María Teresa Alarcón-Herrera
- Reino Olavi Alava
- Sifat A. Alavi
- Dirk C. Albach
- Focke Albers
- Abel Albert
- Victor Anthony Albert
- Luigi Maria d’Albertis
- Sofía Albesiano
- Enas Jameel Albokhari
- Nikolai Mikhailovich Albov
- David Edward Albrecht
- Byron Wilson Pereira de Albuquerque
- Camila Alcantara
- Francisco Alcaraz Ariza
- Juan José Aldasoro
- Björn G. Aldén
- Cornelis Rugier Willem Karel van Alderwerelt van Rosenburgh
- Angela E. Aldridge
- Ulisse Aldrovandi
- Rita Ale
- Vasiliy Vasilievich Alechin
- Friedrich Georg Christoph Alefeld
- J. José Alegría
- Juan Antonio Alejandre
- Grecebio Jonathan Duran Alejandro
- Alessandro Alessandrini
- Edward Johnston Alexander
- J. Andrew Alexander
- James Crinan Murray Alexander
- James Edward Alexander
- Patrick J. Alexander
- Sara Nazanin Alexander
- Fyodor Nikitich Alexeenko
- Evgenii Borisovich Alexeev
- Yuriy Evgenievich Alexeev
- Nina Borisovna Alexeeva
- Ahmed H. Alfarhan
- Evelio Alfaro
- Yucely Alfonso
- Jenifer J. Alford
- Mac Haverson Alford
- José A. Algarra
- Abdul Nasser Al-Gifri
- Haidar Ali
- Liyaqat Ali
- Syed Irtifaq Ali
- Syed Javed Ali
- Tahir Ali
- Antonis Alibertis
- Chryssoula Alibertis
- Alla Abdulovna Alieva
- Sandra S. Aliscioni
- Eugenija Nikolaevna Alissova-Klobukova
- Mohan Alister
- Lulu Florence Allabach
- Frédérique Louis Allamand
- Jean Nicolas Sébastien Allamand
- Harry Howard Barton Allan
- Helge Allander
- Aymar Charles d'Alleizette
- Antonio Costa Allem
- Francisco Freire Allemão e Cysneiro
- Manoel Allemão
- Caroline Kathryn Allen
- David Elliston Allen
- Gary Allen
- Geraldine A. Allen
- James Allen
- Jan M. Allen
- Paul Hamilton Allen
- Suzy Allen
- Timothy Field Allen
- Carlo Allioni
- Izelle Allison
- James R. Allison
- Kenneth Willway Allison
- Robert Allkin
- William Allman
- Lucile Allorge
- Pierre Allorge
- Valia Selitsky Allorge
- Loreen Allphin
- Kelly W. Allred
- Maria Theresa Elizabeth Paula Allsopp
- Selçuk Almanar
- Maryam Almasi
- Frank Almeda
- Erton Mendonça de Almeida
- Gracineide Selma Santos de Almeida
- Joaquim de Almeida
- Marselein Rusario Almeida
- Paulo Ricardo Machado de Almeida
- Rafael Felipe de Almeida
- Rafael S. Almeida
- Samuel Soares de Almeida
- Sarah M. Almeida
- Thais Elias Almeida
- Erik Gustaf Almquist
- Guillem Alomar
- María Ángeles Alonso Vargas
- María Teresa Alonso
- Raquel Alonso Redondo
- Jean Charles Adolphe Alphand
- Kerim Alpınar
- Prospero Alpinio
- Cemal Ünal Alptekin
- Andreas Alschinger
- Mercedes Alsina Aser
- Arthur Hugh Garfit Alston
- Clas Alströmer
- Karen S. Alt
- Fernando Altamirano
- Noel Altamirano
- Yasin Altan
- George William Francis Althofer
- Haşim Altınözlü
- Yusuf Altıoğlu
- Siri Sylvia Patricia von Reis Altschul
- Ernesto Alvarado Reyes
- Marco Antonio Alvarado Vásquez
- Leonardo O. Alvarado-Cárdenas
- Alberto Álvarez de Zayas
- Inés Álvarez Fernández
- María J. Álvarez Martínez
- Esteban Alvarez
- Marcela Alvear
- Edward R. Alverson
- William Surprison Alverson
- Fabiano da Silva Alves
- Flávio Macedo Alves
- Marccus Vinicius da Silva Alves
- Ruy José Válka Alves
- Anderson Alves-Araújo
- Abdul-Ridha Akber Alwan Al-Mayah
- Fernando Alzate Guarin
- José Antonio de Alzate y Ramírez
- Gabriel Alziar
- Emine Alçıtepe
- V.A. Amalraj
- Jean Jules Amann
- Johann Amann
- Tetsuo Amano
- Ayrton Amaral
- Maria do Carmo Estanislau do Amaral
- Prabha Rajini Amarasinghe
- Jean-Pierre Amardeilh
- Leonardo D. Amarilla
- Marisol Amaya
- Kumar Ambrish
- José Arturo Ambrosetti
- Francesco Ambrosi
- Gabriel Komla Ameka
- V.P. Ameljczenko
- Helmut Amerhauser
- Oakes Ames
- Rémy Amice
- Francisco Amich García
- Giovanni Battista Amici
- Javier Amigo
- Amal Amin
- Asyraf Amin
- Mohammad Amini Rad
- Tayebeh Amini
- Hassan Amirabadizadeh
- Atefe Amirahmadi
- Mohammad Sadegh Amiri
- Johann Amman
- Morgane Ammann
- André Márcio Amorim
- Bruno S. Amorim
- Victor B. Amoroso
- A. Ampeng
- Gerda Jane Hillegonda Amshoff
- Roland Amsler
- Erika Amstutz
- Ming Tai An
- Zheng-Xi An
- Goran Anačkov
- Kesara Anamthawat-Jónsson
- Giovanna Anceschi
- Mincho Evtimov Ančev
- Christophe Andalo
- Arne A. Anderberg
- Johannes Carl Andersen
- Alexander Anderson
- Benjamin Michael Anderson
- Christiane Eva Anderson
- Edgar Shannon Anderson
- Edward Frederick Anderson
- F.M. Anderson
- George W. Anderson
- Gregory Joseph Anderson
- Heidi Marguerite Anderson
- Jacob Peter Anderson
- James Anderson (botanist, 1738–1809)
- James Anderson (gardener)
- James Webster Anderson
- John Graham Anderson
- John L. Anderson
- Loran Crittenden Anderson
- Robert Henry Anderson
- Thomas Anderson
- William Anderson
- William Arthur Anderson
- William Russell Anderson
- I. Anita Andersson
- Bengt Lennart Andersson
- Carl Andersson
- Nils Johan Andersson
- Stephan Andersson
- Laurel K. Anderton
- Alda de Andrade Chiappeta
- Aydil Grave de Andrade
- Gloria Andrade
- Ivanilza M. Andrade
- José Cardoso de Andrade
- Maria José Gomes de Andrade
- Arturo Dardano de Andrade-Lima
- József Andrásovszky
- Wilhelm Andreae
- Regina Helena Potsch Andreata
- Angel Andreetta
- Nikolai Andreev
- Vladimir Nikolaevich Andrejev
- Jaime Andrés Rodríguez
- Carmen Andrés
- Heinrich Andres
- Santiago Andrés-Sánchez
- John William Andresen
- Rose Lorien Andrew
- Cecil Rollo Payton Andrews
- Darwin Maxson Andrews
- Frederick William Andrews
- Henry Cranke Andrews
- Spencer Bruce Andrews
- Susyn M. Andrews
- Sylvie Andriambololonera
- Tefy H. Andriamihajarivo
- Jacky Andriantiana
- Nikolay Vikentievich Androsov
- Nicole Andrus
- Antoni Lukianowicz Andrzejowski
- Silvana Anelli
- P.A. Anfalov
- Yu Pin Ang
- G. Angela
- Moritz Angelis
- João Alberto Angely
- Nora Eugenia D.G. Anghelescu
- Roberto Angius
- Johan Ångström
- Diego F. Angulo
- María Betiana Angulo
- Tran Phuong Anh
- Emilia Eduardovna Anikina
- N. Anil Kumar
- K.A. Anilkumar
- Katja Anker
- Carol R. Annable
- Hilaire Annonay
- Delia Añon Suarez de Cullen
- Anis Ahmad Ansari
- Mohammed Yunus Ebrahim Ansari
- Raghavan Ansari
- P.P.D. Anschütz
- Rahim Anşin
- Eleftheria Antaloudaki
- Guilherme Medeiros Antar
- Helmut Antesberger
- Carola Antezana Valera
- John Anthony
- Margery Stuart Anthony
- Nicola C. Anthony
- Orazio Antinori
- E.M. Antipova
- P.V. Anto
- Franz Antoine
- Ana María Anton
- Alexandre Antonelli
- Maurizio Antonetti
- Marcello Antonj
- Zissis Antonopoulos
- Ignatius Antony
- Raju Antony
- Vasilii Ivanovich Antropov
- Varvara Filippovna Antropova
- T. P. Antsupova
- Kelly Antunes
- Elizete Anunciação
- Bruno Anzalone
- Satoshi Aoki
- Lidyanne Yuriko Saleme Aona
- Kithisak Aongyong
- Juan Manuel Aparicio Rojo
- Abelardo Aparicio
- Marcela Aparicio
- Karin Apelgren
- Subramaniam Ganapthi Appan
- Friedrich Carl Louis Otto Appel
- Oliver Appel
- Marc S. Appelhans
- Othmar Robert Willi Appenzeller
- Elmer Ivan Applegate
- Wendy Linn Applequist
- Carl Ferdinand Appun
- F.W. Apt
- David Aquino
- Hosne Ara
- Turan Arabacı
- Zahra Arabi
- Katsutoshi Arai
- Yeiichi Araki
- N.K. Aralbaev
- Vicente Jesús Arán Redó
- Marcelo D. Arana
- Raquel Aránega Jiménez
- Gilberto Arango
- João Luiz Mazza Aranha Filho
- Ana Cláudia Araújo
- Anacreonte Ávila de Araújo
- Andréa Onofre de Araújo
- Paulo Agostinho de Matos Araújo
- Dorothy Sue Dunn de Araujo
- Alejandro Araujo-Murakami
- Alba Arbeláez
- M. Victoria Arbeláez
- Agnes Arber
- María Mercedes Arbo
- Giovanni Arcangeli
- Andrea B. Archbold
- Clare Archer
- Robert H. Archer
- Thomas Croxen Archer
- William Archer (1820-1874)
- William Andrew Archer
- Thomas H. Archer-Hind
- Eily Edith Agnes Archibald
- Fredy Archila
- Nicola M.G. Ardenghi
- Wisnu Handoyo Ardi
- Marlina Ardiyani
- Honoré Jean Baptiste Ardoino
- Pietro Arduino
- Fabiola Areces Berazaín
- José Arechavaleta
- Georg Arends
- Johan Coenraad Arends
- Jean Arènes
- Frederic Wilhelm Christian Areschoug
- Rafael Arévalo
- Graham Charles George Argent
- Carlo Argenti
- Antonello Argiolas
- George William Argus
- Susana Arias Guerrero
- Antonio Sandalio de Arias y Costa
- Ileana Arias
- Salvador Arias
- Tatiana Arias
- Deby Arifiani
- Wilson Arisdason
- Montserrat Arista
- Leandro Aristeguieta
- Luis Ariza Espinar
- William Ariza-Cortés
- Luis Ariza-Julia
- José Antonio Arizaleta
- Beatrice Armari
- Metin Armağan
- William Scott Armbruster
- James D. Armitage
- La-aw Ampornpan
- Jayne Vanessa Armstrong
- James Andrew Armstrong
- John Francis Armstrong
- Joseph Beattie Armstrong
- Kate Armstrong
- C. Arnaiz
- John Thor Arnason
- Hippolyte Arnaud
- Jean André Michel Arnaud
- Itziar Arnelas
- Sigfrid Wilhelm Arnell
- Johann Franz Xaver Arnold
- José E. Arnold
- Trevor Henry Arnold
- Wladimir Mitrofanowitsch Arnoldi
- George Arnott Walker Arnott
- Samuel Arnott
- C.M. Arora
- Pilar Aroza
- Gerald Kench Arp
- María Leonor Arrebola Aranda
- Alberto Arredondo Gomez
- María de la Luz Arreguín
- Hilda Julieta Arreola-Nava
- Johan Peter Arrhenius
- Jorge E. Arriagada
- Jean-François Arrighi
- Pier Virgilio Arrigoni
- Blanca Renée Arrillaga de Maffei
- Axel H. Arriola
- Étienne Théodore Arrondeau
- Frank Arroyo
- Mary Therese Kalin Arroyo
- Silvia C. Arroyo-Leuenberger
- André J. Arruda
- Francisco Antonio de Arrábida
- Gustave Arsène
- Louis Arsène
- Muhammed Jefte C. Arshed
- Orhan Arslan
- Stephen Artault
- Rea Artelari
- Ivan Vlasovich Artemczuk
- Matthew Arterburn
- Arthur William Ziegler
- Zinaida Trofimovna Artjushenko
- Vladimir Martinovich Artsikhovskij
- S. Arumugam
- A. Arvat
- Jean Maurice Casimir Arvet-Touvet
- B.S. Arya
- Leopold Arzt
- Issaku Asai
- Yasuhiro Asai
- Mercedes Asanza
- Anna Asatryan
- Kay H. Asay
- Paul Friedrich August Ascherson
- Alfredo Asensi
- V.N. Ashalatha
- Sagolsem Asharani Devi
- Kenneth Ashburner
- Alison Marjorie Ashby
- Maurice Ashby
- William Willard Ashe
- James Harvey Asher
- Peter Shaw Ashton
- Ruth Elizabeth Ashton
- Margot Bernice Ashwin
- Ajdyn Musaogly Askerov
- R.A.Askerova
- Roza Kasum kyzy Askerova
- Serdar Aslan
- Conny Asmussen
- Erik Asplund
- Renata Camargo Asprino
- Mostafa Assadi
- Ljudmila Anatoljevna Assejeva
- Vulevi Ivan Assenov
- Elton Luis Monteiro De Assis
- Francine Costa Assis
- Leandro Cézanne de Souza Assis
- Lucas Coelho de Assis
- Marco Antônio de Assis
- Marta Camargo de Assis
- Ignacio Jordán de Asso y del Rio
- S.B. Astanova
- Marta E. Astegiano
- Helen Isabel Aston
- Giovanni Astuti
- Inggit Pudji Astuti
- B.S. Aswal
- Anaida Iosifovna Atabekova
- Margoth Atahuachi
- Zeynep Atalay
- Ebru Ataşlar
- Daniel E. Atha
- Kyriaki Athanasiou
- Sarah Maria Athiê-Souza
- Hannah Jane Atkins
- R.J. Atkins
- Sandy Atkins
- Farideh Attar
- Anusha Gayan Atthanagoda
- Lakshmi Attigala
- E. Attinger
- John Talmadge Atwood
- Nephi Duane Atwood
- Aldo Domenico Atzei
- Pedro Alejandro Auber
- Pierre Aubin
- André Aubréville
- Claude Aubriet
- Xavier Aubriot
- Charles Eugène Aubry-Lecomte
- Pierre Martin Rémi Aucher-Éloy
- Pascal Auda
- Urbain Audibert
- Jean Victor Audouin
- John James Audubon
- Jean Augier
- Béla Augustin
- K. Augustin
- Karl Augustin
- Jomy Augustine
- Murín Augustín
- Lilian Auler Mentz
- Zainab Abid Aun
- Mu Mu Aung
- Paul Henri Auquier
- Ch. Aurich
- Fernando B. Aurigue
- Anton Ausserdorfer
- Coe Finch Austin
- Daniel Frank Austin
- Rebecca Merritt Smith Leonard Austin
- Peter K.C. Austwick
- Eugène John Benjamin Autran
- Gaelle Auvray
- Vladimir Ivanovich Avdeev
- Julius Leopold Eduard Avé-Lallemant
- Sergio Avendaño
- Tony Avent
- John Earl Averett
- Leonid Vladimirovich Averyanov
- Anna Leonidovna Averyanova
- Evgenia Mikhailovna Avetisyan
- Vandika Ervandovna Avetisyan
- Fabio Andrés Ávila
- Heriberto Ávila-González
- Gabriela Caridad Avilés-Peraza
- Mariano Avino
- Davut Avlamaz
- Nikolai Aleksandrovich Avrorin
- Ahmed Ibrahim Awale
- Barbro Axelius
- Franklin S. Axelrod
- Franklin Ayala
- Yahya Ayaşlıgil
- M. Ayasse
- Sema Hayırlıoğlu Ayaz
- Mehmet Aybeke
- Zeynep Aydin
- Mustafa Aydoğdu
- Edward Solomon Ayensu
- Tina J. Ayers
- Candan Aykurt
- Gerardo Antonio Aymard Corredor
- Pere Aymerich
- Gérard Guy Aymonin
- François-Xavier Ayobangira
- William Port Ayres
- Zeki Aytaç
- Rahman Azadi
- Nazim Azani
- Inigo Gonzalez y Azaola
- Ana Maria Goulart de Azevedo
- Cecília Oliveira de Azevedo
- Michaele Alvim Milward de Azevedo
- Christiane F. Azevêdo-Gonçalves
- Akın Aziret
- Davood Azizian
- Reza Azmi
- Georges Vincent Aznavour
- José B. Azofeifa-Bolaños
- Florentino Azpeitia y Morós
- Mattia M. Azzella
- Jette Baagøe
- Pieter Baas
- Yumiko Baba
- Mehmet Tekin Babaç
- Brahim Babali
- Dimitrios Babalonas
- Ernest Brown Babcock
- A. Babu
- Cherukuri Raghavendra Babu
- Pasquale Baccarini
- Gianluigi Bacchetta
- Lucas F. Bacci
- Fritz Werner Bach
- Michael Bach
- Auguste Jean Marie Bachelot de la Pylaie
- Fatikh Khafizovich Bachteev
- Rimo Carlo Felice Bacigalupi
- Nélida María Bacigalupo
- Abraham Bäck
- Curt Backeberg
- Cornelis Andries Backer
- Gary N. Backhouse
- James Backhouse
- James Backhouse, Jr.
- Anders Backlund
- Maria Backlund
- César Hippolyte Bacle
- Christine D. Bacon
- Jeffrey R. Bacon
- John D. Bacon
- P.S. Bacon
- Jakub Baczyński
- Giovanni Battista Badarò
- Claus Baden
- Victor Manuel Badillo
- Henri Badoux
- Frederic Jean Badré
- Charles Baehni
- Karl Gabriel Baenitz
- H. Ulrich Baensch
- Karl Ernst von Baer
- Felix Baeten
- Carlos Marcelo Baeza
- Gabriela M. Baeza-Horta
- Yavuz Bağcı
- Simonetta Bagella
- Nina L. Baghai-Riding
- Safi Bagherpour
- Arthur William Gerrard Bagshawe
- Charles Baguet
- Kunwar Naresh Bahadur
- Chang Gno Bai
- Lin Bai
- Xue Liang Bai
- Claudia Baider
- Himansu Baijnath
- Konstantin Stanislavovich Baikov
- C. Donovan Bailey
- Charles Bailey
- Dana K. Bailey
- Ethel Zoe Bailey
- Frederick Manson Bailey
- Irving Widmer Bailey
- John Frederick Bailey
- Liberty Hyde Bailey
- Richard H. Bailey
- Virginia Edith Long Bailey
- Henri Ernest Baillon
- Henry Baines
- Gary Innes Baird
- João Batista Baitello
- Muslim Smailovich Bajtenov
- A. Baja-Lapis
- Devendra M. Bajracharya
- Alan John Martin Baker
- Charles Fuller Baker
- Charles O. Baker
- Edmund Gilbert Baker
- Herbert George Baker
- Hugh Arthur Baker
- John Gilbert Baker
- Kenneth Baker
- Marc A. Baker
- Margaret L. Baker
- Matthew L. Baker
- Milo Samuel Baker
- Richard A. Baker
- Richard Thomas Baker
- Sarah Martha Baker
- William John Baker
- Gholamreza Bakhshi Khaniki
- Reinier Cornelis Bakhuizen van den Brink Sr.
- Reinier Cornelis Bakhuizen van den Brink
- Freek Theodoor Bakker
- Kees Bakker
- Leona Baksay
- Yasmin S. Baksh-Comeau
- Indu Balachandran
- Natesan Balachandran
- Nambiyath Puthansurayil Balakrishnan
- Ricardo Balam Narváez
- Sergey Aleksandrovich Balandin
- Sergey Vitalyevich Balandin
- Benedict Balansa
- Velusamy Balasubramaniam
- Monique Balayer
- Jaroslav Baláž
- Milan Baláž
- Giovanni Battista Balbis
- Antonio Baldacci
- Severo Baldeón
- Ernst Gottfried Baldinger
- Riccardo M. Baldini
- Lucilla Baldoin
- Alberto Balduzzi
- Bruce Gregg Baldwin
- David Dwight Baldwin
- John Thomas Baldwin
- William Baldwin
- Paulo Cesar Baleeiro Souza
- Isaac Bayley Balfour
- John Hutton Balfour
- Max Michael Josephus van Balgooy
- Michael Jeffrey Balick
- Balkrishna
- Kevin Balkwill
- Mandy-Jane Balkwill
- Carleton Roy Ball
- John Ball
- Peter William Ball
- Ernest Ballard
- Francis Ballard
- Harvey Eugene Ballard
- Simone Balle
- Otto Ballif
- Edward Kent Balls
- Peter René Oscar Bally
- Francisco Xavier de Balmis i Berenguer
- Bipin Balodi
- Mehmet Maruf Balos
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- Iljia Grigorievich Borshchow
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- Defferrard
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- Hans Dekker
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- Elvio M. del Castillo
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- Pierre Jean Marie Delavay
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- Joseph-Philippe-François Deleuze
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- Pierre Delforge
- Raymundo Ramírez Delgadillo
- Rosario E. Delgado M.
- Alfonso Delgado Salinas
- Luis Delgado
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- Mark G. Harrington
- Mark Walrod Harrington
- A.J. Harris
- David J. Harris
- Elizabeth Marlene Harris
- James G. Harris
- Stephen A. Harris
- Stuart Kimball Harris
- Thaddeus William Harris
- Timothy Harris
- Warwick Harris
- Wayne K. Harris
- William H. Harris
- Errol Rhodes Harrison
- Joseph Harrison
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- Adam Harrower
- John William Harshberger
- Hendrik 't Hart
- Henry Chichester Hart
- J.M. Hart
- Theodor Hartig
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- Anton Hartinger
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- William Hartley
- Carl Hartman
- Carl Johann Hartman
- Carl Vilhelm Hartman
- Robert Wilhelm Hartman
- Ronald Lee Hartman
- Franz Xaver von Hartmann
- Heidrun Elsbeth Klara Hartmann
- C.A.F.A.Heinrich Hartung
- Per Hartvig
- Karl Theodor Hartweg
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- August Karl Julius Hartwig
- Karl Gustav Hartwig
- Nicolai Anders von Hartwiss
- Nikolaj Hartz
- James Benjamin Harvey
- LeRoy Hatfield Harvey
- Yvette Berenice Harvey
- Robert Kevyn Harwood
- Carl Otto Harz
- Masami Hasegawa (botanist)
- Norito Hasegawa
- Kristen E. Hasenstab-Lehman
- Goro Hashimoto
- Tamotsu Hashimoto
- David C. Hassall
- Abdisalam S. Hassan
- Md. Abul Hassan
- Fredric Hasselquist
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- Justus Carl Hasskarl
- Arne Hässler
- Emil Hassler
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- Elham Hatami
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- Gerdt Guenther Hatschbach
- T.A. Hattink
- Sumihiko Hatusima
- André-Georges Haudricourt
- Frank Hauenschild
- Knud Preben Liisberg Hauerslev
- Christopher H. Haufler
- Erich Haugg
- Oscar Lee Haught
- Samuel Haughton
- Warren D. Hauk
- Lucien Leon Hauman
- Franz von Hausmann
- Gerlinde Hausner
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- Leo.K.K.H. Hautzinger
- Valéry Havard
- F.E. Haviland
- George Darby Haviland
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- Stephen George Haw
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- Jody L. Haynes
- Robert Ralph Haynes
- Bernd Haynold
- John F. Hays
- Ida Margaret Hayward
- W.R. Hayward
- Y. Hazit
- Guo Sheng He
- Hai He
- J.R. He
- Jia Qing He
- Li He (botanist)
- Li Juan He
- Ming You He
- Pi Xu He
- Pu Chao He
- Shao Yun He
- Shun-Zhi He
- Xing-Jin He
- Yue He
- Zhao Rong He
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- Daniel Healy
- S.B. Heard
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- Inga Hedberg
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- S.N. Hegde
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- George Ward Hedley
- Bo Christer Mikael Hedrén
- Mikael Hedrén
- Ulysses Prentiss Hedrick
- Romanus Adolf Hedwig
- Werner van Heek
- Peter B. Heenan
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- Emil Heese
- Sonia Marisa Hefler
- Christoph Friedrich Hegelmaier
- Gustav Hegi
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- N. Heidarnia
- Fatemeh Heidaryan
- Tatiana Sergeevna Heideman
- Gustavo Heiden
- Heinrich Heiden
- Helmut Heider
- Ulrich H.J. Heidtke
- Annemarie Heiduk
- Hans Albrecht Heil
- Kenneth D. Heil
- Otto Heilborn
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- Georg Christoph Heim
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- Heike Heklau
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- James Hatton Hemsley
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- Jesús E. Henao
- Alexander Germanovich Henckel
- Andrew Augustus Henderson
- Andrew Henderson (botanist, 1823–1906)
- Andrew J. Henderson
- Douglass Miles Henderson
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- Hendrik Heukels
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- Jean Hoch
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- Wilhelm Christian Hochstetter
- Léopold François Joseph Hocquart
- Iva Hodálová
- Donald Robert Hodel
- Albion Reed Hodgdon
- Walter Hendricks Hodge
- John Hodgon
- H.J. Hodgson
- Wendy C. Hodgson
- Trevor R. Hodkinson
- Leontij Evmenovich Hodkov
- Eva Hodková
- Fernando Höck
- Joseph August Hoeckert
- Frederico Carlos Hoehne
- Paul H. Hoekstra
- Kim Hoenselaar
- Rudolf Hoerold
- Wolter ten Hoeve
- Otto Hoevel
- Kevin van den Hof
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- Anton Hofer
- Michel Hoff
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- Alicia J. Hoffmann
- Carl Hoffmann
- Ferdinand Hoffmann
- Fred Walter Hoffmann
- Heinrich Karl Hermann Hoffmann
- Karl August Otto Hoffmann
- Käthe Hoffmann
- Matthias H. Hoffmann
- Petra Hoffmann
- Ralph Hoffmann
- Reinhold Hoffmann
- Johann Centurius Hoffmannsegg
- Olaf Alfred Hoffstad
- Franz M.S.V. Höfft
- Hans-Peter Hofmann
- Hermann Hofmann
- Wilhelm Friedrich Benedict Hofmeister
- Joan Hofmeyr
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- P.S. Hoge
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- Robert Hogg
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- Michael Hohla
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- Mária Höhn
- Ana Sofia Sousa de Holanda
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- Jean Joseph Jacques Holandre
- Ailsa E. Holland
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- M. Holle
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- John Ernest Holloway
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- Xin Hong
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- Gin Hoo
- Pui Kiat Hoo
- Johannes Marius Cornelis Hoog
- Eline Hoogendijk
- Gert Hoogenstrijd
- Ruurd Dirk Hoogland
- William Hooker (botanist, 1779–1832)
- Elisabeth Andrews Hooper
- Oliver Hooper
- Sheila Spenser Hooper
- Josiah Hoopes
- Sara B. Hoot
- Robert Francis Hoover
- Charles William Webley Hope
- John Hope
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- Stephen Donald Hopper
- Hans Höppner
- Karl E. Horak
- Elvira Hörandl
- Ladislav Horáček
- Kiyotaka Hori
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- James W. Horn
- Karsten Horn
- David Bertram Horne
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- Murray Hornibrook
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- John F. Horobin
- P.F. Horsfall
- Fenton John Anthony Hort
- Paul Parreiras Horta
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- Ivo Horvat
- Stjepan Horvatić
- Tsigmond Horvátovszky
- Aleš Horák
- David Hosack
- Edward Yataro Hosaka
- Jean-Pierre Hoschedé
- George Frederick Hose
- Ehsan Hoseini
- Takuji Hoshino
- Barbara Joe Hoshizaki
- Hasnaa A. Hosni
- Amal I. Hosny
- Takahide Hosokawa
- Enayet Hossain
- Mosharraf Hossain
- Carl Curt Hosseus
- Nicolaus Thomas Host
- Friedrich Wilhelm Rudolf Hostmann
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- Arland Tillotson Hotchkiss
- Mitsuru Hotta
- Michael Hough
- Romeyn Beck Hough
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- Gary Houliston
- Jean-Baptiste Houllet
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- Khou Eang Hourt
- Homer Doliver House
- Paul Raymond House
- L. Houston
- William Houstoun
- Maarten Houttuyn
- Gijsbertus Houtzagers
- Sébastien Houyelle
- Jean Houzeau de Lehaie
- Jean-Charles Houzeau de Lehaie
- Peter Hans Hovenkamp
- Foon Chew How
- Michael O. Howard
- Richard Alden Howard
- Thaddeus Monroe Howard
- John Eliot Howard
- Neville Henry Simco Howcroft
- Alexis T. Howe
- Elliot Calvin Howe
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- Godfrey Howitt
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- Saúl E. Hoyos-Gómez
- Vít Hrabě
- Anežka Hrabětová-Uhrová
- T.K. Hrideek
- Helmut Hromadnik
- Lieselotte Hromadnik
- Michal Hroneš
- Zdenka Hroudová
- George Frederic Hrusa
- Bolesław Leon Hryniewiecki
- Kuang Cheng Hsia
- Wei Ying Hsia
- Pei Ken Hsiao
- A.Tsai Hsieh
- Chang-Fu Hsieh
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- Tsung Hsin Hsieh
- Yin Tang Hsieh
- Wen-Yue Hsiung
- Chien Chang Hsu
- Fei Shuang Hsu
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- Shih Chung Hsu
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- Ting Zhi Hsu
- Tsai Wen Hsu
- Wei Ying Hsu
- Ying Peng Hsu
- Yung Chun Hsu
- Shwe Jye Hsuan
- Hsiang Hao Hsue
- Chi-Ju Hsueh
- Y.L. Hsueh
- Ai Qun Hu
- Chao Hu
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- Jer Ming Hu
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- Ta Wei Hu
- Wen Kwang Hu
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- Zhi Hao Hu
- Henri Hua
- Hu Song Hua
- Alexander Huamán Mera
- Isau Huamantupa Chuquimaco
- B. Huang
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- Jie Huang
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- Jin Xiang Huang
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- Pu Hwa Huang
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- Shu Hua Huang
- Wei-Chang Huang
- Wei Lian Huang
- Xin Yi Huang
- Xiu Lan Huang
- Ya Yi Huang
- Yan Bo Huang
- Yi Huang (botanist-1)
- Yi Huang (botanist-2)
- Yong Huang (nematologist)
- Yong Chin Huang
- Yu Bi Huang
- Yu Song Huang
- Yun Feng Huang
- Yun Huei Huang
- Yuqian Huang
- Zhang-Jie Huang
- Hibert Huaylla
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- Jean-Henri Humbert
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- Friedrich Wilhelm Heinrich Alexander Freiherr von Humboldt
- Edward P. Hume
- Valentin Humnicki
- A.M. Humphreys
- Christopher John Humphries
- Asfaw Hunde
- Hsin-Chieh Hung
- Susanne Hunger
- John Hunnemann
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- T.S. Hwang
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- Carmen Lúcia Falcão Ichaso
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- Kapitolina Nikolaevna Igoschina
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- Hugo Iltis
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- Joan B. Imlay
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- D.A. Imomova
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- Hüseyin İnceer
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- Yu Iokawa
- Gretchen M. Ionta
- I.B. Ipor
- Mousa Iranshahr
- Helen Elizabeth Ireland
- Bruno Edgar Irgang
- Luis H. Irigoyen
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- William Jameson (botanist, 1815–1882)
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- Hjalmar Frederik Christian Kiaerskov
- Jean Kickx (botanist, 1775–1831)
- Jean Jacques Kickx
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- Jean-Paul Lescure
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- Nathanael Gottfried Leske
- Alexandr Ivanovich Leskov
- Alan Christopher Leslie
- Jean Martial Gustave Lespinasse
- Edmund Lesser
- Christian Friedrich Lessing
- Pierre Adolphe Lesson
- René-Primevère Lesson
- Lester Vallis Lester-Garland
- François Joseph Lestiboudois
- Gaspard Thémistocle Lestiboudois
- Jean-Baptiste Lestiboudois
- Aristide-Horace Letourneux
- René Letouzey
- Rokiman Letsara
- Cythna Lindenberg Letty
- Roman Letz
- S.Y. Leu
- Beat Ernst Leuenberger
- Johannis Leunis
- Gerfried Horand Leute
- Augustin Abel Hector Léveillé
- Étienne Léveillé-Bourret
- Igor Germanovich Levichev
- Emile Levier
- Emmanuel Grigorjevich Levin
- Ernst Ivar Levin
- Geoffrey A. Levin
- Joel Levin
- Rachel Ann Levin
- Rosa Efimovna Levina
- Margaret Rutherford Bryan Levyns
- José Lewalle
- Klaus Lewejohann
- Jean-Marc Lewin
- Kurt Lewin
- Margaret A. Lewington
- Jette Lewinsky
- Beverley Ann Lewis
- Carl E. Lewis
- Frank Harlan Lewis
- Gwendoline Joyce Lewis
- Gwilym Peter Lewis
- Harrison Flint Lewis
- John Lewis
- Leslie Lewis
- Margaret Ensign Lewis
- Meriwether Lewis
- Rhodri Lewis
- Walter Hepworth Lewis
- Frederick Lewis Lewton
- Juan José Martinez de Lexarza
- Alexandra C. Ley
- Augustin Ley
- Frances Arlene Ley
- Friedrich Leybold
- Teresa Leyens
- Charles Louis L’Héritier de Brutelle
- John Lhotsky
- A.D. Li
- An Jen Li
- Bin Li (botanist)
- Bo Li
- Chao Luang Li
- Chi Yun Li
- Chia Wei Li
- Chun Li (botanist)
- De-Zhu Li
- Dong Lin Li
- Fa Zeng Li
- Fay Wei Li
- Fei-Fei Li
- Fu Xiu Li
- Gen You Li
- Guang Zhao Li
- Guo Feng Li
- Hen Li
- Hsi Wen Li
- Hui-Lin Li
- Jia Jue Li
- Jia Xiang Li
- Jia-Mei Li
- Jian Qiang Li
- Jian-Wu Li
- Jian Xiu Li
- Jianhua Li
- Jie Li
- Jun-Ping Li
- Li-Jie Li
- Liang Qian Li
- Lin Li (botanist)
- Lin Chu Li
- Lu Li (botanist)
- Meng-Jie Li
- Min Hui Li
- Ming He Li
- Ming Rui Li
- Nan Li
- Ning-Hon Li
- Pan Li
- Pei Yuan Li
- Pei-Qiong Li
- Ping Tao Li
- Qian Sheng Li
- Qing-Yan Li
- Rong Li
- Rui Gao Li
- Shi Jin Li
- Shi You Li
- Shu Li
- Shu Xin Li
- Sung Po Li
- Wan Cheng Li
- Wei-Ping Li
- Xiang Li
- Xiao Chen Li
- Xin Wei Li
- Xing Wen Li
- Ya Li (botanist)
- Ya Ru Li
- Yan Li (botanist)
- Yan Hui Li
- Yin Li
- Yong Kang Li
- Yong-Fu Li
- Yu Feng Li
- Zhen Yu Li
- Zhong Ming Li
- Zong Xiu Li
- Emmanuel Liais
- Lian Lian
- Yong Shan Lian
- Chou-Fen Liang
- Cun Zhu Liang
- Ding-Ren Liang
- Gui-You Liang
- Jian Ying Liang
- Sheng Ye Liang
- Shu Bin Liang
- Sung Yun Liang
- Wei Jian Liang
- Yi Shuo Liang
- Yong Yan Liang
- Zhen-Long Liang
- Chen Yang Liao
- Jih Ching Liao
- Jing-Ping Liao
- Pei-Chun Liao
- Qi Liao
- Shuai Liao
- Wen-Bo Liao
- Xing-Yu Liao
- Louis Liben
- Joseph Liboschitz
- Max Howard Licher
- Antonio Licheri
- Juana S. de Lichtenstein
- Martin Lichtenstein
- R.W. Lichvar
- Johannes Lid
- David J. Liddle
- Magnus Lidén
- Bengt Lidforss
- Karl Leopold Theodor Liebe
- Theodor Liebe
- Franz Kaspar Lieblein
- Frederik Michael Liebmann
- C. Liebner
- Sigrid Liede
- Georg Liegel
- Wen Yen Lien
- Ronald Lee Liesner
- Alan W.Lievens
- Marilyn H. S. Light
- John Lightfoot
- Judita Lihová
- Sergey Fedorovich Likhachev
- Fedor Dmitrievich Likhonos
- Nils Lilja
- Alf W. Liljefors
- Miguel Lillo
- R. Lillywhite
- William Rune Liltved
- Chong Keat Lim
- Chung Lu Lim
- Duane F. Lima
- Haroldo Cavalcante de Lima
- Laíce Fernanda Gomes de Lima
- Laura Cristina Pires Lima
- Leticia Ribes de Lima
- Maria Inês Salgueiro Lima
- Tamiris Daiane Delgado Lima
- Carla Teixeira Lima
- Hans Wolfgang Limpricht
- Che Wei Lin
- Chun-Rui Lin
- Jia-Yi Lin
- Qi Lin
- Qianshi Lin
- Qin Zhong Lin
- Shi-Shi Lin (botanist)
- Tsan Piao Lin
- Wan Tao Lin
- Wei Chih Lin
- Wei Min Lin
- Yi Ming Lin
- You Xing Lin
- Eliana Linares Perea
- Edelmira Linares
- José Linares
- Igor Alexandrovich Linczevski
- Oleg Alexandrovich Linczevski
- Gustav Lindau
- Gustaf Anders Lindberg
- Harald Lindberg
- Carl Johan Lindeberg
- Jan Christiaan Lindeman
- Eduard Emanuilovitch von Lindemann
- B.L. van der Linden
- Jean Jules Linden
- Lucien Linden
- Johann Bernhard Wilhelm Lindenberg
- Hans Peter Linder
- Ferdinand Jacob Lindheimer
- Alejandro Lindig
- D. Lindig
- Karl Hermann Leonhard Lindinger
- Carl Axel Magnus Lindman
- Sven Bertil Gunvald Lindquist
- Charlotte Lindqvist
- George Edmund Lindsay
- Robert Lindsay
- Stuart Lindsay
- Anders J. Lindström
- Chea Yiing Ling
- Lai Kuan Ling
- Ping Ping Ling
- Yeou Ruenn Ling
- Yong Ling
- Jorge Lingán
- Alexander von Lingelsheim
- Detlef A. Link
- Melanie Link-Pérez
- Kaarlo Linkola
- Carolus Linnaeus the Younger
- George K. Linney
- Karl Linsbauer
- Harold LeRoy Lint
- Edward Francis Linton
- William Richardson Linton
- Thomas Linzen
- Henri Alain Liogier
- S.Z. Liou
- Shou Lu Liou
- Tchen Ngo Liou
- Ying Xing Liou
- A.S. Lipin
- Monika Lipińska
- Wolfgang Lippert
- Xaver Joseph Lippert
- Teodor Lippmaa
- Hans Lippold
- Sergej Julievitsch Lipschitz
- Barney L. Lipscomb
- Vladimir Ippolitovich Lipsky
- Rafael Lira Saade
- Elton John de Lírio
- Domenico Lisa
- Moacyr do Amaral Lisboa
- Brandet-Junior Lissambou
- Arthur Lister
- Aaron Irving Liston
- René Verriet de Litardière
- Amy Litt
- Damon P. Little
- Elbert Luther Little
- R. John Little
- Dimitri Ivanovich Litvinov
- Ai Zhong Liu
- Bin-Bin Liu
- Bing Liu (botanist)
- De Tuan Liu
- Ding-Kun Liu
- En De Liu
- Fang Yuan Liu
- Guang-Ning Liu
- Guo Hou Liu
- Guo Jun Liu
- Guo Dao Liu
- Ho Yih Liu
- Hong Liu
- Hong Mei Liu
- Hou Liu
- Jia-Kai Liu
- Jian Guo Liu
- Jian Lin Liu
- Jian Qiu Liu
- Jian Quan Liu
- Jian Sheng Liu
- Jing Liu (botanist)
- Jun Liu (botanist)
- Ke Ming Liu
- Ke Wang Liu
- Ke Wei Liu
- Kun Liu
- Li Hua Liu
- Lian-Fen Liu
- Liang Liu
- Lin Han Liu
- Mao Chun Liu
- Mei Liu
- Ming Gang Liu
- Pei Liang Liu
- Qiang Liu
- Quan-Ru Liu
- Shang Wu Liu
- Shih-Hui Liu
- Shou Yang Liu
- Shu Zhen Liu
- Su Liu
- Tang Shui Liu
- Xian-Zhang Liu
- Xing Liu
- Xiu Mei Liu
- Yan Liu
- Yea Chen Liu
- Yeh Ching Liu
- Yi Liu
- Yi Tao Liu
- Ying Liu (botanist, born 1982)
- Ying Liu (botanist, fl. 1941)
- Yong Min Liu
- Yu Lan Liu
- Zhen Dong Liu
- Zhen-Wen Liu
- Zheng Yu Liu
- Zhi Long Liu
- Zhong Jian Liu
- E.J. Livera
- Paolo Liverani
- Chrispus Livingstone
- Tatyana Livshultz
- Mabel A. Lizarazu
- Erik Ljungstrand
- Juan A. Llamacho
- Felix Llamas
- Silvia Llamozas
- Martín Llano-Almario
- Antonio Llanos
- María Dolores Lledó
- Eduardo Lleras
- Antonio Llorens de Ros
- Leonardo Llorens
- Ferran Josep Lloret
- David Graham Lloyd
- Francis Ernest Lloyd
- James Lloyd
- Robert Michael Lloyd
- Rosa Maria Lo Presti
- Eugenia Y. Y. Lo
- Hsien Shui Lo
- Udo W. Löb
- Alexey Yakovlevich Lobachev
- Adriana Q. Lobão
- Thomas Lobb
- William Lobb
- Mathias de Lobel
- Wolfram Lobin
- Danielle Lobreau-Callen
- John Michael Lock
- John Locke
- David Lockhart
- Peter J. Lockhart
- James H. Locklear
- Henry Loconte
- Conrad Loddiges
- George Loddiges
- William Loddiges
- Joël Lodé
- Pehr Löfling
- Matthias Joseph Loehr
- Ludwig Eduard Theodor Loesener
- Otto Loesener
- Leopold Loeske
- Benoit Loeuille
- Albert Löfgren
- Stefan D. Löfstrand
- August Loher
- Lúcia Garcez Lohmann
- Javier José Loidi
- Maria Iracema Bezerra Loiola
- Roger J. Loisel
- Jean Loiseleur-Deslongchamps
- Pierre-André Loizeau
- Michele Lojacono Pojero
- Bernt Løjtnant
- Jiří Lom
- Aleksandr Aleksandrovich Lomakin
- Eduard Nikolaevich Lomakin
- Nadezhda Vasilievna Lomakina
- Natasha Visser Lombard
- Julio Antonio Lombardi
- José Aquileo Lomelí-Sención
- Maria Lomonosova
- Alexander Alexandrovich Lonaczewski
- Robert I. Lonard
- Friedrich Wilhelm Londes
- Ger Londo
- Ana Catalina Londoño Vega
- Ximena Londoño
- Yeison Londoño-Echeverri
- Chun Lin Long
- Gilbert Long
- Robert William Long
- William Henry Long
- Xiu Ji Long
- Yao Hwa Long
- Hilda Maria Longhi-Wagner
- Albert Edward Longley
- Edwin Keith Longpre
- Adam Lonitzer
- Elias Lönnrot
- A. Lonsing
- Adrian Hock Beng Loo
- E.E.M. Loock
- Dennis J. Loockerman
- Herman van Looken
- Harold Frederick Loomis
- Götz Heinrich Loos
- Gualterio Looser
- Adriaan Loosjes
- Ariadna Valentina Lopes
- Jenifer de Carvalho Lopes
- José Manuel Miranda Lopes
- Rosana Conrado Lopes
- Thereza Cristina Costa Lopes
- Lilián G. López Chávez
- Carlos López Encina
- María Luisa López Fernández
- Ginés Alejandro López González
- Luis E. López Jaramillo
- Eusebio López Nieto
- María José López Pacheco
- Santiago López Palacios
- Lucia Lopez Poveda
- José Ángel López Rodríguez
- Silvia López Udias
- Gemma López Vélez
- Alicia López
- Christian López
- Josefa López
- M. Gabriela López
- Javier López-Alvarado
- Ana Rosa López-Ferrari
- Sara López-Vinyallonga
- Giuseppe Lopriore
- Gerhard Lorbeer
- Manuel Peinado Lorca
- Francisco G. Lorea-Hernández
- Christian Gottlieb Lorek
- Michael Lorek
- David H. Lorence
- Jakob August von Lorent
- Pablo Günther Lorentz
- Karin Lorenz
- Richard Michael Lorenz
- Harri Lorenzi
- Henri Loret
- Félix-Nicolas Lorey
- Juan Lorite
- Jean Lorougnon Guédé
- Maria Luisa Lorscheitter
- Clémence Lortet
- Louis Charles Émile Lortet
- Taurino Mariano Losa
- Francisco Loscos Bernal
- Cristóbal Loscos
- Agnija Sergejewna Losina-Losinskaja
- Giuseppe Loss
- Thomas Robert Noel Lothian
- Johannes Paulus Lotsy
- Emily Jane Lott
- Henry J. Lott
- Mervyn C. Lötter
- Xavier Garreau de Loubresse
- Adriaan M. Louis
- Jean Laurent Prosper Louis
- Louis-Marie
- Jean Joël Loumeto
- Alice Lounsberry
- João de Loureiro
- Ana Raquel Lima Lourenço
- Alicia Lourteig
- Mário Fernandes Lousã
- Job Edward Lousley
- Rafael Batista Louzada
- Áskell Löve
- Doris Benta Maria Löve
- Jon C. Lovett
- John Donald Lovis
- Juliana Lovo
- Andrija-Zelimir Lovrić
- Barry Low
- Hugh Low
- Immanuel Löw
- Shook Ling Low
- Yee Wen Low
- Richard Max Lowden
- Edward Joseph Lowe
- Michael R. Lowe
- Richard Thomas Lowe
- Timothy K. Lowrey
- Allen Lowrie
- Martin Lowry
- Porter P. Lowry II
- Isabel Loza
- Lucio Lozada-Pérez
- José Luis Lozano Terrazas
- Eduardo Damasceno Lozano
- Matteo Lozano
- Pablo Lozano
- R. Lozano
- Gustavo Lozano-Contreras
- Ling Ti Lu
- An Min Lu
- Chang Tse Lu
- Fu Yuan Lu
- Geng-Yu Lu
- Jin-Mei Lu
- Jiong Lin Lu
- Ngan Thi Lu
- Pei Luen Lu
- Sheng Lian Lu
- Sheng-You Lu
- Shu Gang Lu
- Yan Jun Lu
- Yi Fei Lu
- Yi Xin Lu
- Yingqing Lu
- Zhao Cen Lu
- Zhao-Hua Lu
- Zhi Qiang Lu
- Zong-Jun Lu
- Patricia Lu-Irving
- Sulivong Luang Aphay
- Amihan Mercado Lubag-Arquiza
- Louis Lubbers
- Eve Lucas
- Grenville Llewellyn Lucas
- Maria de Fátima de Araújo Lucena
- Modesto Luceño
- Zoraida Luces de Febres
- Zinaida Ivanovna Luchnik
- Navina G. Luckana
- Emil Lückel
- Carl August Lückhoff
- Hilmar Albert Lückhoff
- Melissa Ann Luckow
- Sudhizong Z. Lucksom
- Werner Lüdi
- Frank Ludlow
- Raquel Lüdtke
- Alfred Ludwig
- Christian Friedrich Ludwig
- Christian Gottlieb Ludwig
- Friedrich Ludwig
- Nicole Ludwig
- Wolfgang Ludwig (botanist)
- Federico Luebert
- Niel T. Luebke
- Wolfgang Lüders
- Johann Georg Luehmann
- Carlyle August Luer
- George Mather Luer
- Christian Luerssen
- Philipp von Luetzelburg
- Aleksandr Nikolaevich Luferov
- Otto Lugger
- Hans Luhrs
- Ivan Martynovich Luhs
- Iacopo Luino
- Marie Dominique Luizet
- Manuel Luján
- Emil Lukašik
- Quentin Luke
- Julius Lukeš
- Václav Breindl
- Catherine W. Lukhoba
- Pavel Panteleimonovich Lukjanenko
- Athanase de Lukmanoff
- Margarita Vasilievna Lukyanova
- Febo Lumare
- Peter Francis Lumley
- István Lumnitzer
- Naédja Luna
- Isolda Luna-Vega
- John Lunan
- Ingelise D. Lund
- Nicolai Lund
- Cyrus Longworth Lundell
- Carl-Fredrik Lundevall
- Jan Lundgren
- Roger Lundin
- Johan Daniel Lundmark
- Carl Erik Lundström
- Joël Lunell
- Dong-Sheng Luo
- H.C. Luo
- Jin Long Luo
- Jin Yu Luo
- Min Rong Luo
- Peng-Rui Luo
- Ping Luo
- Xin-Yan Luo
- Yan Luo
- Yi Bo Luo
- Thien Tam Luong
- Van Dung Luong
- Hermann Lüscher
- Alfred Wyndham Lushington
- Giuseppe Lusina
- James Leonard Luteyn
- Harry Edward Luther
- Adrian D. Lüthy
- Jonas Martin Lüthy
- Everett Stanley Luttrell
- Hong Truong Luu
- Alexander Lux
- George Luxford
- Anne Ranielly Monteiro Luz
- R. Luz
- Vladimir Gennadievich Luzhanin
- Ding Hao Lv
- Hui-Zi Lv
- Zhen Yu Lv
- Ngoc-Sâm Lý
- Trân Ðinh Lý
- David Lyall
- Olga Alexandrovna Lyapunova
- John Mortimer Lydgate
- Kåre Arnstein Lye
- Charles Lyell
- Katharine Murray Lyell
- Károly Lyka
- Jim R. Lykos
- Nathan P. Lynch
- Richard Irwin Lynch
- Harold Lloyd Lyon
- Peggy Lyon
- Stephanie Pimm Lyon
- Albert Brown Lyons
- Gary Lyons
- Israel Lyons
- Michael N. Lyons
- Martin A. Lysak
- Dmitry F. Lyskov
- Louis Raoul Urbain Théophile Maurice Léger
- David López García
- Armando López
- Enrique Alvarez López
- Noemí López-González
- Cheng Gong Ma
- Chi Yun Ma
- Chong-Bo Ma
- Dan Dan Ma
- En Wei Ma
- Jin-Shuang Ma
- Ke-Ping Ma
- Li Ming Ma
- Liang Ma
- Nai Xun Ma
- Qi Sheng Ma
- Shang Ying Ma
- T.G. Ma
- Tao Ma (botanist)
- Wei Liang Ma
- Xin Tang Ma
- Xing-Cong Ma
- Xing-Da Ma
- Yi Zhong Ma
- Yong Peng Ma
- Yu-Chuan Ma
- Zhong Hui Ma
- Hillegonda Maas
- Paulus Johannes Maria Maas
- C.A. Maass
- Erika Maass
- Gustav Friedrich Hermann Maass
- Ali Asghar Maassoumi
- David John Mabberley
- Makenzie Elizabeth Mabry
- William Macarthur
- Jorge Macaya
- James Francis Macbride
- Bruce MacBryde
- Laurence Howland MacDaniels
- Hugh P. MacDonald
- Daniel Trembly MacDougal
- John MacDougal
- Thomas Baillie MacDougall
- Amaro Macedo
- Arthur Macedo
- Nick Macer
- James Macfadyen
- John Muirhead Macfarlane
- Roger M. MacFarlane
- Terry Desmond Macfarlane
- John MacGillivray
- Paul Howard MacGillivray
- Anderson Ferreira Pinto Machado
- Marlon C. Machado
- Marlon Câmara Machado
- Othon Xavier de Brito Machado
- Talita Mota Machado
- Bertha Machatschki-Laurich
- Wendelin Mächler
- Karina Machuca-Machuca
- Leila Macias
- Stephen Maciejewski
- Jefferson Rodrigues Maciel
- Sebastião Maciel
- John Bain Mackay
- Hugh Shaw MacKee
- Kenneth Kent Mackenzie
- Barbara Ann Mackinder
- Doris Livingstone Mackinnon
- Ellen Dulcie Macklin
- James A. Macklin
- Heinrich Christian Macklot
- Nanda F. Fleming MacLeish
- Julius MacLeod
- George Macloskie
- Carmen Cecilia Macluf
- William James Maclure
- Bryony Hope Macmillan
- Conway MacMillan
- John Richard Maconochie
- James Melville Macoun
- John Macoun
- Peter MacOwan
- Pierre-Justin-Marie Macquart
- Duncan J. Macqueen
- James Macrae
- Daniel Chambers Macreight
- Ana Lucrecia MacVean
- Ravi Kiran Madala
- Leopold Madani
- Edward Madden
- Hossein Madhani
- Pandara Valappil Madhusoodanan
- K. Madhusudhanan
- Michael T. Madison
- Xavier Madrigal Sánchez
- Jens E. Madsen
- Domingo Madulid
- Andres Maduro
- Yoshiyuki Maeda
- Tokujirô Maekawa
- Y. Maekawa
- Didier Maerki
- Georg Friedrich Maerklin
- Laurentius Josephus Gerardus van der Maesen
- Maurius Magalon
- Patricia Magaña
- Marianne Magauer
- Carlos Magdalena
- Anthony R. Magee
- Mara Angelina Galvão Magenta
- Alberto Magli
- Jean-Henri Magne
- Charles Magnier
- Antoine Magnin
- Joëlle Magnin-Gonze
- Pierre Magnol
- S.L. Magoswana
- Lawrence K. Magrath
- Sara Magrini
- Bassett Maguire
- T.L. Maguire
- Tryambak Shankur Mahabalé
- Kazem Mahdigholi
- Mohammad Mahmoodi
- Chonour Mahmoudi
- Alison McKenzie Mahoney
- R.L.A. Mahunnah
- Uway Warsita Mahyar
- Ridha Mahyuni
- Joseph Henry Maiden
- Eva Maier
- Maria Maier-Stolte
- Pierre Néhémie Maillard
- Alphonse Maille
- Arthur Maillefer
- Vinod Maina
- Alexander Carroll Maingay
- Evelyn Maino
- Tatiana Maisak
- Gour Gopal Maiti
- Thomas Douglas Maitland
- Yulia Konstantinovna Maitulina
- Debabrata Maity
- Ľuboš Majeský
- Alexey Alekseevich Majorov
- Sergey Robertovich Majorov
- Jozef Májovský
- Nimai Chandra Majumdar
- Radha Binod Majumdar
- Lucas C. Majure
- Vladilen Valentinovich Makarov
- Alexander Konstantinovich Makaschvili
- Serdar Makbul
- Akram Mamajonovich Makhmedov
- Akram Mamazhonovich Makhmedov
- A.I. Mäkinen
- Liisa Mäkinen
- Yrjö Lauri Antero Mäkinen
- Tomitarô Makino
- Robert Owen Makinson
- Charun Maknoi
- Alexander Makowsky
- Sarah Malaby
- E.V. Malacha
- Ramón Peñafort Malagarriga y Heras
- François Malaisse
- José Vicente Cordeiro Malato-Beliz
- Alexandre François Malbranche
- Simon T. Malcomber
- Carla Brenda Maldonado Goyzueta
- Valéry Malécot
- Vladimir Petrovich Maleev
- Maryam Malekloo
- Maryam Malekmohammadi
- C.L. Malhotra
- Krishna Chandra Malick
- Miroslav Malina
- Edmund Malinowski
- Tomasz Maliński
- Louis Jules Ernest Malinvaud
- B. Malkmus-Hussein
- Samar Bahadur Malla
- James Mallet
- Henrique Mallmann Büneker
- August Johan Malmberg
- Gustaf Oskar Andersson Malme
- Anders Johan Malmgren
- Benigno Malo
- Itambo Malombe
- Joey Malone
- Constantin Malos
- Nilesh Vijay Malpure
- Oscar Malte
- Franz de Paula Malý
- Joseph Karl Maly
- Karl Franz Josef Malý
- Hulusi Malyer
- Leonid Ivanovich Malyschev
- N.I. Malyutin
- Alexander Ivanovich Malzev
- Ivan Ivanovich Malzev
- A.T. Malzeva
- Stanislav Alexandrovich Mamaev
- Filep Mambor
- Yasper Michael Mambrasar
- Maria Candida Henrique Mamede
- S.K. Mamgain
- Nicole Marie B. Manalastas
- Bruno José Manara
- L. Manca
- W.Albert Manda
- Bohumil Mandák
- Terezie Mandáková
- Manasi Mandal
- Sukheshwar Mandal
- Ida Panovna Mandenova
- Karl Mandl
- Edmond Mandon
- Gilbert Mandon
- Sutida Maneeanakekul
- Jean-François Manen
- Giuseppe Manetti
- Saverio Manetti
- Vallery Mangal
- Jose K. Mangaly
- Ana Manganaro
- R. Mangani
- Paul Christoph Mangelsdorf
- Ralph Daniel Mangelsdorff
- George Marie Mangenot
- Bince Mani
- K.J. Mani
- Visuvasam Sosai Manickam
- Ramasamy Manikandan
- U. Manikandan
- Kattungal Subramaniam Manilal
- Chandrasekharan Nair Manju
- Mariette Manktelow
- Debra L. Manley
- Gustav Mann
- Horace Mann
- Phill Mann
- Len 't Mannetje
- C.A. Mannheimer
- Quintino Giovanni Manni
- John Charles Manning
- Stephen D. Manning
- Wayne Eyer Manning
- Jacques Dominique Octave Mannoni
- Ulrika Manns
- Paul S. Manos
- Héctor Favio Manrique
- Vidal de Freitas Mansano
- Richard Mansell
- Peter A. Mansfeld
- Rudolf Mansfeld
- Donald Holmes Mansfield
- Jayson A. Mansibang
- Guilhem Mansion
- Muhammad Mansur
- Jim Mant
- Mauricio R. Mantilla-Blandón
- Georges Antoine Mantin
- K. Madhavan Manudev
- José Manuel Manzanares
- David Manzur
- Ashiho Asosii Mao
- Kang-Shan Mao
- Pin I Mao
- Zu Mei Mao
- Ruvimbo Jessy Mapaya
- Carlo de Marchesetti
- Soledad Ramos Maqueda
- Philippe Maquet
- Elizabeth M. Marais
- Sarel J. Marais
- Wessel Marais
- Bartolomeo Maranta
- Alexandre Lucien Marie Marcailhou d'Ayméric
- Sidney Marçal de Oliveira
- Luis Marcano-Berti
- José Luis Marcelo-Peña
- Cosimo Marcenò
- Adeodato Francisco Marcet y Poal
- Georg Marcgrave
- Neville Graeme Marchant
- Eduardo Marchesi
- Dino Marchetti
- Marene M. Marchi
- Palmer Marchi
- Maria Salete Marchioretto
- José Newton Cardoso Marchiori
- Paweł Marciniuk
- Brian Marcks
- Washington Marcondes-Ferreira
- Antonio Marcos Pascual
- Vasilij Vasilievich Marcowicz
- Jeff Marcus
- Thomas Marcussen
- Randolph Barnes Marcy
- Tamaz Kirillovich Mardalejschvili
- Robert Joseph Jean-Marie Maréchal
- Slovák Marek
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- Shanling
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- Mary Sizemore
- Vladimír Skalický
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- James Dan Skean
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- Soonku So
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- Ana Sobral
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- Paul C. Sokoloff
- Sergej Yakovlevich Sokolov
- Irina Viktorovna Sokolova
- M.V. Sokolova
- Michael O. Soladoye
- José Luis Solanas
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- Eloy Solano
- Otto Thomas Solbrig
- Adriano Soldano
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- Ana Soler
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- Hermann Maximilian Carl Ludwig Friedrich zu Solms-Laubach
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- Carl Eric Sonck
- Carl Mårten Sondén
- Otto Wilhelm Sonder
- Jun Ho Song
- Xi Qiang Song
- Xiang Hou Song
- Xiao Qing Song
- Yu Song (botanist)
- Zhu Qiu Song
- André Songeon
- Anand Sonkar
- Bonaventure Sonké
- Emel Sönmez
- Pierre Sonnerat
- A.E. Sonnikova
- Charles-Nicolas-Sigisbert Sonnini de Manoncourt
- Susanne Sontag
- Duangchai Sookchaloem
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- Ferdinando Sordelli
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- Vijay Vishnu Wagh
- Klaus Wagner
- Antony J. Wagner
- Florian Wagner
- János Wagner
- Kurt Wagner
- Moritz Wagner
- Warren Herbert Wagner
- Warren Lambert Wagner
- Harvey Keith Wagnon
- Steven J. Wagstaff
- Herbert Alexander Wahl
- Rainer Wahl
- Johan August Wahlberg
- Peter Fredrik Wahlberg
- Gregory A. Wahlert
- Eric Wahlsteen
- Ute Wahrmund
- Anton Waisbecker
- Michio Wakabayashi
- Takao Wakasugi
- Elsie Maud Wakefield
- F.W. Wakefield
- Norman Arthur Wakefield
- Mary Morris Vaux Walcott
- Dieter Waldeis
- Genevieve K. Walden
- Alfred Waldner
- Franz de Paula Adam von Waldstein
- Eberhard Waldvogel
- Royden Samuel Wale
- Marion Meason Walgate
- Colin Charles Walker
- Donald A. Walker
- Egbert Hamilton Walker
- Jay B. Walker
- John Walker
- Mary Grant Walker
- Timothy Walker
- Trevor George Walker
- David Leo Walkington
- Arnold Wall
- George Wall
- Alexander Wallace
- Benjamin John Wallace
- Gary D. Wallace
- Richard H. Wallace
- Robert S. Wallace
- Eva Wallander
- Johan Gottschalk Wallerius
- Nathaniel Wallich
- Gustav Wallis
- Rannveig Wallis
- Robert B. Wallis
- Bruno Wallnöfer
- Christoph Wallossek
- Wilhelm Gerhard Walpers
- Hubertus Gerardus Maria Walraven
- Éric Walravens
- Marc Walravens
- Gerry F. Walsh
- Neville Grant Walsh
- Lesley Walsingham
- Charles Walter
- Hans Paul Heinrich Walter
- Heinrich Karl Walter
- Helmut Walter
- Johannes Walter
- Kerry Scott Walter
- Thomas Walter
- Gretchen Marie Walters
- Johann Jakob Walters
- Stuart Max Walters
- Terrence W. Walters
- Augustin Friedrich Walther
- Elly Walther
- Eric Walther
- Frederick Arthur Walton
- Chen-Wan Chang
- Shao Bin Wan
- Tao Wan (botanist)
- Yu Wan
- Maria das Graças Lapa Wanderley
- Ai-Hua Wang
- Ba San Wang
- Bin Wang (botanist)
- Bing-Mou Wang
- Bo Wang (botanist)
- Chao Ping Wang
- Chi Wu Wang
- Ching Jui Wang
- Chu Hao Wang
- Chung Hsin Wang
- Cong Jiao Wang
- De Qun Wang
- De Yin Wang
- Ding Yue Wang
- Dong Wang (botanist)
- Fa Guo Wang
- Fa Tsuan Wang
- Han Jin Wang
- Heng Chang Wang
- Hong Wang
- Hong-Feng Wang
- Huan Chong Wang
- Hui Qin Wang
- Jenn Che Wang
- Jian Wang (botanist - Asteraceae)
- Jian Wang (botanist)
- Jin Wu Wang
- Jing-Xiang Wang
- Jing Quan Wang
- Kai Yun Wang
- Lei Wang (botanist)
- Li Wang
- Ling Wang
- Li-Song Wang (botanist)
- Long Wang
- Meina Wang
- Meizhen Wang
- Nian Wang
- Pei Shan Wang
- Qi Wang (botanist)
- Qiang Wang (botanist)
- Qing-Feng Wang
- Qing Li Wang
- Qing-Long Wang
- Quan Xi Wang
- Rong Bin Wang
- Rui Jiang Wang
- Rui-Bin Wang
- Shu Hsiou Wang
- Song Wang (botanist, born 1955)
- Sui Yi Wang
- Wei Wang (1912-1991)
- Wei Wang (fl. 2009)
- Wen-Guang Wang
- Wen Tsai Wang
- Xi Long Wang
- Xi Qu Wang
- Xian-Rong Wang
- Xiao Ming Wang
- Xiao Quan Wang
- Xiao Ying Wang
- Yan Wang (botanist)
- Yi Fu Wang
- Yin Zheng Wang
- Ying Wang (botanist)
- Ying Wei Wang
- Yong Wang (botanist-1)
- Yong Wang tetrakis
- Yong Wang tris
- Yong Xiao Wang
- Yu-Bing Wang
- Yu Jin Wang
- Yu Sheng Wang
- Yue-Ha Wang
- Ze Huan Wang
- Zhan Wang
- Zheng-Ping Wang
- Zheng Wei Wang
- Zhi Xin Wang
- Zhong Ren Wang
- Jigme Wangchuk
- Tandin Wangdi
- Friedrich Adam Julius von Wangenheim
- Walther Wangerin
- Khanit Wangwasit
- Stefan Wanke
- Iwan Wasiljewitsch Wankow
- Jimmy F. Wanma
- Surawit Wannakrairoj
- Bruce S. Wannan
- Hans-Erik Wanntorp
- Livia Wanntorp
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- Oscar Emanuel Warburg
- Otto Warburg
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- George Henry Ward
- Josephine M. Ward
- Lester Frank Ward
- Nathaniel Bagshaw Ward
- John Aston Warder
- Peter Wardle
- Theophilus Hatton Wardleworth
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- Natalie Warford
- Jean Pierre Adrien Warion
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- Richard Warner
- Richard H. Warner
- Robert Warner
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- Michael J. Warnock
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- Dieter Carl Wasshausen
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- Kiyohiko Watanabe
- Maurício Takashi Coutinho Watanabe
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- Hewett Cottrell Watson
- John Forbes Watson
- John Michael Watson
- Leslie Watson
- Linda E. Watson
- M. Carolyn Watson
- Mark Francis Watson
- Peter William Watson
- Sereno Watson
- Thomas J. Watson
- William Watson (1715–1787)
- William Watson (botanist, 1832–1912)
- William Watson (1858–1925)
- William Charles Richard Watson
- David Allan Poe Watt
- George Watt
- Santi Watthana
- William Walter Watts
- Bruno Watzl
- Brent Wauer
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- Richard E. Weaver
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- David Allardyce Webb
- Philip Barker Webb
- Robert H. Webb
- Bruce L. Webber
- Herbert John Webber
- John Milton Webber
- Julie H. Webber
- Anton Weber
- Carl Albert Weber
- Claude Weber (botanist)
- Emil Weber
- Frédéric Albert Constantin Weber
- Friedrich Weber
- Hans Weber
- Heinrich Egon Weber
- J.B. Weber
- John Henry Weber
- Joseph Zvonko Weber
- Michael H. Weber
- Odile Weber
- Rolf Weber
- Ulrich Weber
- Wilhelm Weber
- Xénia A. Weber
- Augusto Weberbauer
- Focko H.E. Weberling
- Franz Weberndorfer
- Grady Linder Webster
- Robert D. Webster
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- Carolyn M. Weiller
- Marc Weiller
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- Kurt Wein
- Barbara Weinberg
- F. Weinberg
- Erich Weinert
- Wilhelm Weingart
- Johann Anton Weinmann
- Johann Georg Weinmann
- Johann Wilhelm Weinmann
- D. Weintroub
- Jaroslav Weiser
- Emanuel Weiss
- Johann Evangelista Weiss
- Frans M. Weitz
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- Anna Lisa Weitzman
- Donald Stuart Welch
- Marcus Baldwin Welch
- Winona Hazel Welch
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- Stephen G. Weller
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- James Ray Wells
- Philipp Vincent Wells
- Wilhelmina Gerhardina Welman
- Henry Welsh
- Stanley Larson Welsh
- Walter Welss
- Friedrich Welwitsch
- Peter C. van Welzen
- Fang Wen
- He Qun Wen
- Jun Wen (botanist)
- Tai Hui Wen
- Zhi-Bin Wen
- G. Wende
- Jonathan F. Wendel
- Per Erland Berg Wendelbo
- Georg Wilhelm Franz Wenderoth
- Heinrich Ludolph Wendland
- Johan Christoph Wendland
- Norbert Wendt
- Del Weniger
- Hermann Lorenz Weniger
- Dieter Wenker
- Sybille Wenker
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- Friedrich August Ferdinand Christian Went
- Frits Warmolt Went
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- Theodor Wenzig
- Patricia H. Wepfer
- Karl Wercklé
- Erich Werdermann
- Henk van der Werff
- William P. Wergin
- David A. Werier
- Franz Wernekinck
- Florian Werner
- Klaus Werner
- Manuel Werner
- Herbert Fuller Wernham
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- Petcharat Werukamkul
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- Alfred Wesmael
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- Wilhelm Wessner
- Cyril West
- Hans West
- Judith Gay West
- Frederic Westcott
- H.P. Westel
- Gérard Daniel Westendorp
- Peter Jansen Wester
- Carl Agardh Westerlund
- Carl Gustaf Westerlund
- Maximilian Westermaier
- Friedrich Westhoff
- Peter Henry Weston
- Richard Weston
- E. Westphal
- Lübbert Ybele Theodoor Westra
- Johannes Martenis Jacob de Wet
- Wolfgang Wetschnig
- Mark Allen Wetter
- Fritz Wettstein
- Richard Wettstein
- Wolfgang Wettstein
- William John Bates van de Weyer
- Carolyne Weymouth
- Anthony J. Whalen
- M.A. Whalen
- Michael Dennis Whalen
- Ralph D. B. Whalley
- Gerald A. Wheeler
- Helen-Mar. Wheeler
- James Wheeler
- Judith Roderick Wheeler
- Louis Cutter Wheeler
- William Efner Wheelock
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- David John Edward Whibley
- Trevor Paul Whiffin
- Amiel Weeks Whipple
- George Chandler Whipple
- Wayne Arthur Whistler
- A. Robin White
- Alain Campbell White
- Cyril Tenison White
- Donald White
- Francis Buchanan White
- Frank White
- Gilbert White
- Jean White
- John White (botanist, ca 1760–1837)
- John White of Royal Navy
- Marcus White
- Robert B. White
- Theodore Greely White
- Caroline Whitefoord
- F.H. Whitehead
- Jack Whitehead
- Chris Whitehouse
- Eula Whitehouse
- Harold Leslie Keer Whitehouse
- Marian Muriel Whiting
- R.E. Whiting
- Barbara Ann Whitlock
- Sherry A. Whitmore
- Timothy Charles Whitmore
- Leo David Whitney
- Mary Kathryn Whitson
- Edward Whittall
- Alan T. Whittemore
- Mark Whitten
- Max Ernst Wichura
- Gerald Ernest Wickens
- Carl-Johan Viktor Widén
- Karl-Gustav Gunnar Widén
- Beat E. Widler
- Fredericus O. Widmark
- Elisabeth Widmer
- Pudji Widodo
- Mark P. Widrlechner
- E. Wiebe
- Gustav A. Wiebe
- Ferdinand Johann Wiedemann
- W. Wiefelspütz
- J.H. Wieffering
- Karl McKay Wiegand
- Gerhard Wiegleb
- Arend Joachim Friedrich Wiegmann
- Susan Wiegrefe
- Hans Joachim Wiehler
- Delbert Wiens
- Jan Johannes Wieringa
- John H. Wiersema
- Piotr Pawlus Wierzbicki
- Johann Baptist Wiesbaur
- Albert Everett Wieslander
- Julius von Wiesner
- Willem A. Wietsma
- Julius Wilhelm Albert Wigand
- Heinrich August Ludwig Wiggers
- Glenn B. Wiggins
- Ira Loren Wiggins
- Virgil Dale Wiggins
- Grace Wigglesworth
- Alexander Este Wight
- Robert Wight
- William Franklin Wight
- Knud Jørgen Frederik Wiinstedt
- Lahiru S. Wijedasa
- Douglas Siril Abeywickrama Wijesundara
- Ishara Harshajith Wijewardane
- Roelof J. van der Wijk
- Onno Wijnands
- H.J.W. Wijsman
- Annette Wiklund
- Johan Emanuel Wikström
- Niklas Wikström
- Justyna Wiland
- Johann Bernhard Wilbrand
- Robert Lynch Wilbur
- Joan Hubbell Wilce
- Christopher C. Wilcock
- Balafama Helen Wilcox
- Michael David Wilcox
- Yves Wilcox
- Ernst Wilczek
- Rudolf Wilczek
- Tadeusz Wilczyński
- Hiram Wild
- Arend de Wilde
- Jan Jacobus Friedrich Egmond de Wilde
- Gerrit Parmile Wilder
- Othmar J. Wildhaber
- Hermann Josef Wildpret
- Wolfredo Wildpret de la Torre
- William Wildsmith
- Dmitrij Germogenovich Wilensky
- Karl Wilhelm
- Dieter H. Wilken
- Charles Wilkes
- David Wilkie
- Peter Wilkie
- Paul Wilkin
- Carolyn F. Wilkins
- Maria Will
- Johan Nordal Fischer Wille
- Pierre Remi Willemet
- Pierre Rémi François de Paule Willemet
- Liliane Willems
- Luc P.M. Willemse
- R.H. Willemse
- Alexander R. Williams
- Benjamin Samuel Williams
- Bethany R.M. Williams
- Elizabeth W. Williams
- Frederic Newton Williams
- Henry Williams
- Iolo Aneurin Williams
- Ion James Muirhead Williams
- J. Trevor Williams
- John Beaumont Williams
- Justin Kirk Williams
- Kyle Joseph Williams
- Llewelyn Williams
- Louis Otho Williams
- Margot Williams
- Mark L. Williams
- Marvin C. Williams
- Norris Hagan Williams
- Parker J. Williams
- Robert Orchard Williams
- Samuel Williams
- Samuel Williams (botanist, 1743–1817)
- Susan Alix Williams
- Thomas Albert Williams
- Graham Williamson
- Herbert Bennett Williamson
- John Williamson
- Phyllis Alison Williamson
- S.D. Williamson
- Christian Ludwig Willich
- Barbara Willing
- Eckhard Willing
- James Hamlyn Willis
- John Christopher Willis
- Oliver Rivington Willis
- Heinrich Moritz Willkomm
- Karen Elizabeth Wills
- Christine Melanie Wilmot-Dear
- Alfred James Wilmott
- Friedrich Wilms
- Friedrich Heinrich Wilms
- Alfred Gurney Wilson
- Annette Jane Gratton Wilson
- Barbara Lynn Wilson
- Brett Donald Wilson
- Carol Anne Wilson
- Christine Elizabeth Wilson
- Ernest Henry Wilson
- F. Douglas Wilson
- Gary Whittaker Wilson
- George Fergusson Wilson
- George Fox Wilson
- Hannah P. Wilson
- Hugh Dale Wilson
- Hugh Daniel Wilson
- Karen Louise Wilson
- Leonard Richard Wilson
- Mark Wilson
- Paul Graham Wilson
- Paul Siri Wilson
- Percy Wilson
- Peter Gordon Wilson
- Robert Gardner Wilson
- Rosemary Wilson
- Ruby K. Wilson
- Trevor C. Wilson
- Christian Friedrich Heinrich Wimmer
- Franz Elfried Wimmer
- Michael Dennis Windham
- Paulo Guenter Windisch
- Donald Richard Windler
- Øjvind Winge
- Phya Winit Wanandorn
- Michael Wink
- Esmée Winkel
- Constantin Georg Alexander Winkler
- Gottfried Eduard Winkler
- Hans Winkler
- Hubert J.P. Winkler
- Moritz Winkler
- Annette Lewis Winner
- Andreas Peter Winslow
- Charles Frederick Winslow
- Evelyn James Winslow
- Ludovic Winter
- Pieter J. D. Winter
- James Edward Winterbottom
- Jacob Joseph Winterl
- A.H. Winward
- Joseph K. Wipff
- Nengah Wirawan
- Harry Wiriadinata
- Adam Ludwig Wirsing
- Ferdinand Paul Wirtgen
- Philipp Wilhelm Wirtgen
- Wolfgang Wirth
- Friedrich Adolph Wislizenus
- Volker Wissemann
- Olena Dmytrivna Wissjulina
- Rolf Wisskirchen
- Andreas Wistuba
- W. Wisura
- Hendrik Cornelis Dirk de Wit
- Irena Wita
- Johanna A. Witasek
- Leopoldo Witeck-Neto
- Henry Thomas Maire Silvertop Witham
- William Withering
- Carl Leslie Withner
- Joko R. Witono
- Theo Witsell
- Eduard Theodor Witte
- Heinrich Witte
- Hernfrid Witte
- Ludwig Wittmack
- Helmut Wittmann
- Ronald C. Wittmann
- Holger Wittner
- Georg Christian Wittstein
- Chattida Wiya
- Georg Woerlein
- B. Eugene Wofford
- Rudolf Wohlfarth
- Sébastien Wohlhauser
- Johann Friedrich Wohlleben
- M. Wohlschlager
- Jan J. Wójcicki
- Martin F. Wojciechowski
- Aneta Wojewódzka
- Anne-Elizabeth Wolf
- Carl Brandt Wolf
- Egbert Ludwigowitsch Wolf
- Ferdinand Otto Wolf
- Franz Theodor Wolf
- Franziska Wolf
- Nathanael Matthaeus von Wolf
- Paul G. Wolf
- Richard Wolf
- Steven J. Wolf
- Wolfgang Wolf
- Andrea D. Wolfe
- Caspar Friedrich Wolff
- Johann Friedrich Wolff
- Johann Philipp Wolff
- Karl Friedrich August Hermann Wolff
- Manfred Wolff
- Peter Wolff
- S.L. Wolff
- Johann Friedrich Wolfgang
- Alexandra Wölk
- Pierre Wolkenstein
- George Buchanan Wollaston
- Eckhard Wollenweber
- Anthony Hurt Wolley-Dod
- Eustach Woloszczak
- Grzegorz Jakub Wolski
- John Spencer Womersley
- Hyosig Won
- K.K. Wong
- Khoon Meng Wong
- Sin Yeng Wong
- Suwidji Wongso
- Pornpimon Wongsuwan
- Bok-Ju Woo
- Kwang-Bok Woo
- Vincent L. Woo
- Alphonso Wood
- Bertha Wood
- Carroll Emory Wood
- David Wood
- Geoffrey H.S. Wood
- Jeffrey James Wood
- John Medley Wood
- John Richard Ironside Wood
- Joseph Garnett Wood
- Kathleen Wood
- Kenneth Richard Wood
- Mark W. Wood
- William Wood (botanist)
- Edward H.W. Woodall
- Harold Mellor Woodcock
- Hubert Bayley Drysdale Woodcock
- Elizabeth Mary Woodgyer
- George Marshall Woodrow
- Dorothea Woodruff
- Joseph Woods
- Michael Woods
- Patrick James Blythe Woods
- Robert Everard Woodson
- William Woodville
- Catherine L. Woodward
- Robert Vernon Giffard Woolley
- William Woolls
- Florence Helen Woolward
- David Wooster
- Jean Wilson Wooten
- Elmer Ottis Wooton
- Thomas Wootten
- Martin Wormskjöld
- Jurij Nikolaewitch Woronow
- Arthington Worsley
- Alexandra H. Wortley
- Arno Wörz
- Zygmunt Wóycicki
- Heinrich Karl Woynar
- Tone Wraber
- Mateusz Wrazidlo
- A. E. Wright
- Charles Wright
- Charles Henry Wright
- Edward Perceval Wright
- Ian J. Wright
- James Wright
- John Wright
- Michael A.R. Wright
- Samuel Hart Wright
- Thomas Strethill Wright
- William Wright
- Ysabel Galbán Wright
- Konrad Stanisław Wróblewski
- Zheng-Yi Wu
- Chang Chun Wu
- Ching Ju Wu
- Chung Luen Wu
- Han Wu
- Hong Qi Wu
- Jia Kun Wu
- Jia Lin Wu
- Jin Qing Wu
- Jin-Hua Wu
- Kuo Fang Wu
- L.F. Wu
- Lei Wu
- Li Hong Wu
- Ming Hsiang Wu
- Ming Jou Wu
- Qi-Gen Wu
- Shiew Hung Wu
- Shu Hui Wu
- Su Kung Wu
- T.C. Wu
- Te-Lin Wu
- Wang Hui Wu
- Xun-Feng Wu
- Y. Wu
- Yeng-Fen Wu
- Yin Ch’An Wu
- Ying Siang Wu
- Yu Hu Wu
- Yu Ting Wu
- Zeng-Yuan Wu
- Zhen Hai Wu
- Zhen Lan Wu
- Zhi Min Wu
- Jac Wubben
- Wolfgang Wucherpfennig
- Roland Wüest
- Franz Xaver von Wulfen
- Adrien S. Wulff
- Arturo Federico Wulff
- Ella May T. Wulff
- Eugenii Vladimirowitsch Wulff
- Heinz Diedrich Wulff
- Johann Christoph Wulff
- Thorild Wulff
- Rudolf Wülfinghoff
- Heinrich Rudolph Wullschlaegel
- Richard P. Wunderlin
- John Julius Wurdack
- Kenneth J. Wurdack
- Christoph Carl Friedrich von Wurmb
- Berthold Würstle
- James R. Wussow
- Karl Georg Gustav Wüstnei
- John Wyatt-Smith
- Robert Edward Wyatt
- Heinrich Wydler
- Abraham Erasmus van Wyk
- Andrew Wyley
- Jeff Wynants
- Bleddyn Wynn-Jones
- Michael B. Wyse Jackson
- Peter Wyse Jackson
- Martin Xanthos
- Nereida Xena
- Guy Xhonneux
- Jing Qing Xi
- Ping Gen Xi
- You Wei Xi
- Nian-He Xia
- Yong-Mei Xia
- Chun-Lei Xiang
- Kun Li Xiang
- Qiao Ping Xiang
- Qiu Yun Xiang
- Xiao-Guo Xiang
- Jia Bin Xiao
- Jia-Wei Xiao
- Xin Ju Xiao
- Chun-Ping Xie
- Kai Ming Xie
- Lei Xie
- Quan Zheng Xie
- Wen Yuan Xie
- Zhong Wen Xie
- Cecilia Carmen Xifreda
- Renato Ximenes Bolsanello
- Zi-Bing Xin
- Fu Wu Xing
- Xing-Jun Xiong
- Yuan Xin Xiong
- Lázaro Xixima
- Bing Qiang Xu
- Bo Xu
- Jie Mei Xu
- Ke Wang Xu
- Lang Ran Xu
- Li Guo Xu
- Lian Sheng Xu
- Song Zhi Xu
- Wei Bin Xu
- Wen-Fen Xu
- Xiang-Ming Xu
- Yao Liang Xu
- Yuan Xu (botanist)
- Yue Liang Xu
- Zhao Ran Xu
- Zhen-Guo Xu (botanist)
- Gaspar Xuarez
- Bine Xue
- Jia Rong Xue
- Xiang Ji Xue
- Ji Dong Ya
- Yoshitada Yabe
- Akinori Yabuki
- Santosh Yadav
- Shrirang Ramchandra Yadav
- Usha Shrirang Yadav
- Takahiro Yagame
- Tetsukazu Yahara
- W. Yahud
- Deepthi Yakandawala
- Gennady Pavlovich Yakovlev
- Georgij Vasilievich Yakovlev
- Ivan Vyacheslavovich Yakushkin
- Faik Yaltırık
- Naoki Yamada
- Eiji Yamahata
- Hiroki Yamaji
- Iwahisa Yamamoto
- Kikyo Yamamoto
- Yoshimatsu Yamamoto
- Tsugiwo Yamanaka
- Jun Yamashita
- Yumi Yamashita
- Takasi Yamazaki
- Hai-Fei Yan
- Su Zhu Yan
- Yu Hong Yan
- Yue Hong Yan
- Masayuki Yanagihara
- Yoshizo Yanagita
- Jeniffer M. Yánez
- Bao Min Yang
- Bin Yang (botanist)
- Bo Yun Yang
- Chang Ping Yang
- Chang You Yang
- Chen Xuan Yang
- Chien Chow Yang
- Chun Shu Yang
- Chun Yu Yang
- De Po Yang
- Dong-Mei Yang
- Fu Sheng Yang
- Fu-Yu Yang
- Gang Yang
- Guang Yang
- Guang Hui Yang
- Guang-Sui Yang
- H.Z. Yang
- Han Pi Yang
- Hsi Ling Yang
- Hu Biao Yang
- Ji Young Yang
- Jia Xin Yang
- Jin Xiang Yang
- Jin-Cai Yang
- Jun Liang Yang
- Li E Yang
- Li-Hua Yang
- Ping Hou Yang
- Qin-Er Yang
- Qing Hua Yang
- Shao Cheng Yang
- Sheng-Zehn Yang
- Shi-Xiong Yang
- Si Lin Yang
- Si Yuan Yang
- Tsung Yu Aleck Yang
- Ya Yang
- Ya Ling Yang
- Yan Hong Yang
- Yen Chin Yang
- Yong Yang
- Yong Kang Yang
- Yong Ping Yang
- Yu-Ming Yang
- Yuen-Po Yang
- Yung Chang Yang
- Zen Hong Yang
- Rinchen Yangzom
- Sroynapa Yannawat
- Artemios Yannitsaros
- Olga Yano
- Chang Yu Yao
- De Shen Yao
- Hong Yao
- Kan Yao
- Tze Leong Yao
- Kim Fatt Yap
- Yakup Yapar
- Ahmet Emre Yaprak
- Sharon C. Yarborough
- Tamara Adamovna Yarchuk
- Nina Petrovna Yarosh
- Olga Pavlovna Yaroshenko
- Katsuhiro Yashiro
- Ryôkichi Yatabe
- Harris Oliver Yates
- James Yates
- Willard F. Yates
- George Yatskievych
- Kay Yatskievych
- Ziva Yavin
- Ömer Koray Yaylacı
- Türker Yazıcı
- Chuang Xing Ye
- De Ping Ye
- Guang-Han Ye
- Guang-zheng Ye
- Hua Gu Ye
- Lwin Aung Ye
- Qin Liang Ye
- Xue-he Ye
- Yu Qing Ye
- Yu-Shi Ye
- Loraine Yeatts
- Hounnankpon Yédomonhan
- Ching Long Yeh
- Chi Yen
- Shen-Horn Yen
- Tzu Cheng Yen
- Carmen Yen-Méndez
- Andriy V. Yena
- Svetlana S. Yengalycheva
- Peter Frederick Yeo
- Yeter Yeşil
- Jovita Cislinski Yesilyurt
- Qi Fei Yi
- Si Rong Yi
- Ting Shuang Yi
- Tong Pei Yi
- Xian-Gui Yi
- P.C. Yii
- Nalan Yıldırım Doğan
- Hasan Yıldırım
- Șinasi Yıldırımlı
- Bayram Yıldız
- Kemal Yıldız
- Serhat Yıldız
- Gülden Yılmaz
- Özer Yılmaz
- Daw Yin Yin Kyi
- Jian-Tao Yin
- Jun-Mei Yin
- Shu Fen Yin
- Ya Yi Yin
- Yue Yin
- Zu Tang Yin
- Shao Shun Ying
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