Alston, Arthur Hugh Garfit

* September 04, 1902 – March 17, 1958 †

United Kingdom; United Kingdom of Great Britain and Ireland

Identified Selaginellaceae and collected Polypodiaceae

Arwidsson, Thorsten

* March 11, 1904 – December 23, 1948 †

Sweden

Identified Ericaceae and collected Rosaceae

Dessein, Steven

Belgium

Identified Rubiaceae and collected Rubiaceae

Adolf Engler
Engler, Adolf

* March 25, 1844 – October 10, 1930 †

Weimar Republic

Identified Araceae and collected Araceae

Gürke, Robert Louis August Maximilian

* November 17, 1854 – March 16, 1911 †

Kingdom of Prussia

Identified Ebenaceae and collected Rosaceae

Identified Fabaceae and collected Rubiaceae

Karl Moritz Schumann
Schumann, Karl Moritz

* June 17, 1851 – March 22, 1904 †

Kingdom of Prussia

Identified Rubiaceae and collected Asteraceae

Sosef, Marc

Belgium

Identified Poaceae and collected Rubiaceae

Identified Gentianaceae and collected Asteraceae

Wieringa, Jan

Netherlands

Identified Fabaceae and collected Fabaceae