Robert Folger Thorne

July 13, 1920 – March 24, 2015

United States

Asteraceae

Collected Asteraceae and identified Cyperaceae

Adolphe Tonduz

1862 – 1921

Switzerland

Piperaceae

Collected Piperaceae and identified Piperaceae

Laurence Toolin

January 07, 1938 – January 11, 2018

United States

Poaceae

Collected Poaceae and identified Poaceae

Nuncia María Tur

1940 – ?

Argentina

Poaceae

Collected Poaceae and identified Podostemaceae

Billie Lee Turner

1925 – May 27, 2020

United States

Asteraceae

Collected Asteraceae and identified Asteraceae

Hans von Türckheim
Hans von Türckheim

May 27, 1853 – May 07, 1920

Germany

Asteraceae

Collected Asteraceae and identified Lamiaceae

Ignatz Urban
Ignatz Urban

January 07, 1848 – January 07, 1931

Kingdom of Prussia; German Reich

Fabaceae

Collected Fabaceae and identified Rubiaceae

Collected Asteraceae and identified Asteraceae

Edward Groesbeck Voss

February 22, 1929 – February 13, 2012

United States

Cyperaceae

Collected Cyperaceae and identified Poaceae

William Alfred Weber

November 16, 1918 – March 18, 2020

United States

Parmeliaceae

Collected Parmeliaceae and identified Asteraceae

Ira Loren Wiggins

January 01, 1899 – November 28, 1987

United States

Asteraceae

Collected Asteraceae and identified Fabaceae

Robert Lynch Wilbur

July 04, 1925 – October 31, 2022

United States

Melastomataceae

Collected Melastomataceae and identified Campanulaceae

Elsa Matilde Zardini

June 09, 1949 – November 30, 2020

Argentina; Paraguay

Asteraceae

Collected Asteraceae and identified Onagraceae

Scott Zona

United States

Arecaceae

Collected Arecaceae and identified Arecaceae

Fernando Zuloaga

Argentina

Poaceae

Collected Poaceae and identified Poaceae

Cornelis den Hartog

January 28, 1931 – 2021

Kingdom of the Netherlands

Zosteraceae

Collected Zosteraceae and identified Hydrocharitaceae

Alexander von Humboldt
Alexander von Humboldt

September 14, 1769 – May 06, 1859

Kingdom of Prussia

Asteraceae

Collected Asteraceae and identified Cordiaceae

Anders Sandøe Ørsted
Anders Sandøe Ørsted

June 21, 1816 – September 03, 1872

Kingdom of Denmark

Asteraceae

Collected Asteraceae and identified Cyperaceae