Richard Eric Holttum

* July 26, 1895 – September 18, 1990 †

United Kingdom

Thelypteridaceae

Collected Thelypteridaceae and identified Thelypteridaceae

Karl Ulrich Kramer

* October 17, 1928 – July 11, 1994 †

Switzerland

Poaceae

Collected Poaceae and identified Lindsaeaceae

Victor Samuel Summerhayes

* February 21, 1897 – December 27, 1974 †

United Kingdom

Orchidaceae

Collected Orchidaceae and identified Orchidaceae