Arthur Hugh Garfit Alston
September 04, 1902 – March 17, 1958
United Kingdom; United Kingdom of Great Britain and Ireland

Collected Polypodiaceae and identified Selaginellaceae
Collected Rubiaceae and identified Poaceae

Collected Asteraceae and identified Poaceae

Collected Asteraceae and identified Aspleniaceae
Christopher J. Dixon
United Kingdom; Austria; Netherlands

Collected Campanulaceae and identified Onagraceae
Mark Duffell
United Kingdom
Identified Ranunculaceae
Collected Rosaceae and identified Rosaceae
Norbert Holstein
United Kingdom

Collected Asteraceae and identified Cucurbitaceae

Collected Thelypteridaceae and identified Selaginellaceae
Pedro Jiménez-Mejías
United States

Collected Cyperaceae and identified Cyperaceae
Collected Solanaceae and identified Solanaceae

Collected Ericaceae and identified Araliaceae

Collected Orchidaceae and identified Papaveraceae

Collected Fabaceae and identified Asteraceae
George Taylor
February 15, 1904 – November 13, 1993
United Kingdom; United Kingdom of Great Britain and Ireland

Collected Asteraceae and identified Potamogetonaceae
Anthony Hurt Wolley-Dod
November 17, 1861 – June 21, 1948
United Kingdom; United Kingdom of Great Britain and Ireland

Collected Poaceae and identified Rosaceae
Collected Caryophyllaceae and identified Juncaginaceae