Holttum, Richard Eric

* July 26, 1895 – September 18, 1990 †

United Kingdom

Thelypteridaceae

Collected Thelypteridaceae and identified Cyatheaceae

Kramer, Karl Ulrich

* 1928 – 1994 †

Switzerland

Fabaceae

Collected Fabaceae and identified Lindsaeaceae

Summerhayes, Victor Samuel

* February 21, 1897 – December 27, 1974 †

United Kingdom

Apiaceae

Collected Apiaceae and identified Orchidaceae