Charles Frederick Millspaugh
Charles Frederick Millspaugh

* June 20, 1854 – September 16, 1923 †

United States

Euphorbiaceae

Collected Euphorbiaceae and identified Euphorbiaceae

Harold Norman Moldenke

* March 11, 1909 – January 07, 1996 †

United States

Asteraceae

Collected Asteraceae and identified Verbenaceae

Collected Urticaceae and identified Urticaceae

Peter Moonlight
Peter Moonlight

Ireland; United Kingdom

Fabaceae

Collected Fabaceae and identified Begoniaceae

Conrad Vernon Morton

* October 24, 1905 – July 29, 1972 †

United States

Asteraceae

Collected Asteraceae and identified Solanaceae

Dorothy N. Gibson

* January 21, 1920 – May 03, 2012 †

United States

Asteraceae

Collected Asteraceae and identified Verbenaceae

Collected Polygalaceae and identified Polygalaceae

Collected Asteraceae and identified Lamiaceae

Francis W. Pennell

* August 04, 1886 – February 03, 1952 †

United States

Orobanchaceae

Collected Orobanchaceae and identified Plantaginaceae

Kathleen Mary Peterson

* March 10, 1948 – 2003 †

United States

Identified Lamiaceae

Collected Poaceae and identified Poaceae

Timothy Plowman

* November 17, 1944 – January 07, 1989 †

United States

Erythroxylaceae

Collected Erythroxylaceae and identified Erythroxylaceae

L. Alan Prather

United States

Asteraceae

Collected Asteraceae and identified Polemoniaceae

Collected Asteraceae and identified Asteraceae

Heimo Rainer

Austria

Asteraceae

Collected Asteraceae and identified Annonaceae

Collected Gesneriaceae and identified Gesneriaceae

Collected Hymenophyllaceae and identified Polygalaceae

Harold E. Robinson

* May 22, 1932 – December 17, 2020 †

United States

Sphagnaceae

Collected Sphagnaceae and identified Asteraceae

Norman Keith Bonner Robson

* 1928 – September 06, 2021 †

United Kingdom

Rubiaceae

Collected Rubiaceae and identified Hypericaceae

Collected Lauraceae and identified Lauraceae

Carmen E. Benítez de Rojas

* March 22, 1937 – December 21, 2019 †

Venezuela

Solanaceae

Collected Solanaceae and identified Solanaceae

Collected Rosaceae and identified Rosaceae

Eduard Rosenstock

* June 02, 1856 – May 29, 1938 †

German Reich

Aspleniaceae

Collected Aspleniaceae and identified Pteridaceae

Werner Rothmaler

* August 20, 1908 – April 13, 1962 †

Germany

Asteraceae

Collected Asteraceae and identified Rosaceae

Velva Elaine Rudd

* 1910 – December 09, 1999 †

United States

Fabaceae

Collected Fabaceae and identified Fabaceae

Per Axel Rydberg

* July 06, 1860 – July 25, 1931 †

Sweden; United States

Asteraceae

Collected Asteraceae and identified Rosaceae

Anton Karl Schindler

* August 15, 1879 – 1964 †

Germany

Fabaceae

Collected Fabaceae and identified Fabaceae

Rudolf Schlechter
Rudolf Schlechter

* October 16, 1872 – November 16, 1925 †

Germany

Asteraceae

Collected Asteraceae and identified Orchidaceae

Dorothea Louise Schulz

* 1931 – 1993 †

Identified Asteraceae

Vladimír Skalický

* April 12, 1930 – July 06, 1994 †

Czech Republic

Asteraceae

Collected Asteraceae and identified Rosaceae