Abraham, Jean Prosper

* 1930 – May 1996 †

Madagascar

Collected Fabaceae

Abrams, LeRoy

* October 01, 1874 – August 15, 1956 †

United States

Identified Asteraceae and collected Asteraceae

Giuseppe Acerbi
Acerbi, Giuseppe

* May 03, 1773 – August 25, 1846 †

Austrian Empire

Collected Asteraceae

Acocks, John Phillip Harison

* April 07, 1911 – May 20, 1979 †

South Africa

Identified Aizoaceae and collected Iridaceae

Adamson, Robert Stephen

* March 02, 1885 – November 06, 1965 †

United Kingdom; Union of South Africa; United Kingdom of Great Britain and Ireland

Identified Aizoaceae and collected Poaceae

Aellen, Paul

* May 13, 1896 – August 19, 1973 †

Switzerland

Identified Amaranthaceae and collected Asteraceae

Lucas Alamán
Alamán, Lucas

* October 18, 1792 – June 02, 1853 †

Mexico

Collected Asteraceae

de Albuquerque, Byron Wilson Pereira

* February 1932 – October 13, 2003 †

Brazil

Identified Rutaceae and collected Fabaceae

Annie Montague Alexander
Alexander, Annie Montague

* December 29, 1867 – September 10, 1950 †

United States

Identified Cyperaceae and collected Cricetidae

Ali, S I

* ? – February 18, 2021 †

Identified Fabaceae and collected Asteraceae

Allard, Harry Ardell

* January 28, 1880 – February 25, 1963 †

United States

Identified Cyperaceae and collected Cladoniaceae

Francisco Freire Allemão
Allemão, Francisco Freire

* July 24, 1797 – November 11, 1874 †

Brazil

Identified Fabaceae and collected Fabaceae

Alston, Arthur Hugh Garfit

* September 04, 1902 – March 17, 1958 †

United Kingdom; United Kingdom of Great Britain and Ireland

Identified Selaginellaceae and collected Polypodiaceae

Alva, Abundio Sagástegui

* October 23, 1932 – May 26, 2012 †

Peru

Identified Asteraceae and collected Solanaceae

Ames, Oakes

* September 26, 1874 – April 28, 1950 †

United States

Identified Orchidaceae and collected Orchidaceae

James Anderson
Anderson, James

* 1797 – April 22, 1842 †

United Kingdom of Great Britain and Ireland; Great Britain

Collected Solanaceae

Nils Johan Andersson
Andersson, Nils Johan

* February 20, 1821 – March 27, 1880 †

Sweden

Identified Cyperaceae and collected Asteraceae

Arbeláez, Enrique Pérez

* March 01, 1886 – January 22, 1972 †

Colombia

Identified Rubiaceae and collected Asteraceae

Argent, Graham Charles George

* May 15, 1941 – April 24, 2019 †

United Kingdom

Identified Ericaceae and collected Ericaceae

Identified Amaryllidaceae and collected Poaceae

Arsène, Gustave

* 1867 – May 25, 1938 †

France

Identified Poaceae and collected Poaceae

Asplund, Erik

* October 09, 1888 – July 30, 1974 †

Sweden

Identified Poaceae and collected Poaceae

Austin, Rebecca Merritt

* March 10, 1832 – March 04, 1919 †

United States

Identified Phrymaceae and collected Asteraceae

Identified Asteraceae and collected Rubiaceae

Cardale Babington
Babington, Cardale

* November 23, 1808 – July 22, 1895 †

United Kingdom of Great Britain and Ireland

Identified Rosaceae and collected Caryophyllaceae

Bacigalupi, Rimo Carlo Felice

* March 24, 1901 – August 23, 1996 †

United States

Identified Orobanchaceae and collected Asteraceae

Bacigalupo, Nélida María

* June 01, 1924 – March 04, 2019 †

Argentina

Identified Rubiaceae and collected Poaceae

Bailey, Charles

* June 18, 1838 – September 14, 1924 †

Identified Cyperaceae and collected Characeae

Isaac Bayley Balfour
Balfour, Isaac Bayley

* March 31, 1853 – November 30, 1922 †

United Kingdom of Great Britain and Ireland

Identified Ericaceae and collected Asteraceae

John Ball
Ball, John

* August 20, 1818 – October 21, 1889 †

United Kingdom of Great Britain and Ireland

Identified Caryophyllaceae and collected Asteraceae