Hermann Otto Sleumer

* February 21, 1906 – October 01, 1993 †

Germany; Kingdom of the Netherlands

Collected Ericaceae and identified Salicaceae

John Donnell Smith
John Donnell Smith

* June 05, 1829 – December 02, 1928 †

United States

Asteraceae

Collected Asteraceae and identified Malvaceae

Albert Charles Smith

* April 05, 1906 – May 23, 1999 †

United States

Rubiaceae

Collected Rubiaceae and identified Rubiaceae

David M. Spooner

* November 01, 1949 – June 07, 2022 †

United States

Solanaceae

Collected Solanaceae and identified Solanaceae

Frans Stafleu

* September 08, 1921 – December 16, 1997 †

Kingdom of the Netherlands

Collected Vochysiaceae and identified Vochysiaceae

Paul Carpenter Standley

* March 21, 1884 – June 02, 1963 †

United States

Asteraceae

Collected Asteraceae and identified Rubiaceae

Collected Asteraceae and identified Asteraceae

Collected Solanaceae and identified Solanaceae

Collected Lejeuneaceae and identified Lejeuneaceae

Collected Asteraceae and identified Gentianaceae

Collected Bromeliaceae and identified Bromeliaceae

Rolla M. Tryon Jr.
Rolla M. Tryon Jr.

* August 26, 1916 – August 20, 2001 †

United States

Pteridaceae

Collected Pteridaceae and identified Pteridaceae

Billie Lee Turner

* 1925 – May 27, 2020 †

United States

Asteraceae

Collected Asteraceae and identified Asteraceae

Ignatz Urban
Ignatz Urban

* January 07, 1848 – January 07, 1931 †

Kingdom of Prussia; German Reich

Fabaceae

Collected Fabaceae and identified Rubiaceae

Alejandra Vasco

United States

Dryopteridaceae

Collected Dryopteridaceae and identified Dryopteridaceae

Identified Dioscoreaceae

Collected Dryopteridaceae and identified Pteridaceae

Winona Hazel Welch

* May 05, 1896 – January 18, 1990 †

United States

Brachytheciaceae

Collected Brachytheciaceae and identified Fontinalaceae

Collected Vitaceae and identified Araliaceae

Collected Dioscoreaceae and identified Dioscoreaceae

Franz Elfried Wimmer

* November 30, 1881 – May 02, 1961 †

Austria-Hungary; Austria

Salicaceae

Collected Salicaceae and identified Campanulaceae

Robert Everard Woodson

* April 28, 1904 – November 06, 1963 †

United States

Piperaceae

Collected Piperaceae and identified Apocynaceae

Elsa Matilde Zardini

* June 09, 1949 – November 30, 2020 †

Argentina; Paraguay

Asteraceae

Collected Asteraceae and identified Onagraceae

James Lee Zarucchi

* 1952 – July 21, 2019 †

United States

Fabaceae

Collected Fabaceae and identified Apocynaceae

Collected Asteraceae and identified Pteridaceae

Fernando Zuloaga

Argentina

Poaceae

Collected Poaceae and identified Poaceae

Elías Ramón de la Sota

* September 27, 1932 – January 20, 2014 †

Argentina

Polypodiaceae

Collected Polypodiaceae and identified Polypodiaceae