Alston, Arthur Hugh Garfit
* September 04, 1902 – March 17, 1958 †
United Kingdom; United Kingdom of Great Britain and Ireland
Identified Selaginellaceae and collected Polypodiaceae
Callmander, Martin W.
Switzerland
Identified Pandanaceae and collected Sapindaceae
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Identified Poaceae and collected Orchidaceae
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Identified Poaceae and collected Orchidaceae
Identified Polyporaceae and collected Rubiaceae
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Collected Fabaceae

Identified Sematophyllaceae and collected Poaceae

Identified Dicranaceae and collected Rubiaceae
Identified Lejeuneaceae and collected Lauraceae
Identified Orchidaceae and collected Orchidaceae

Identified Sphagnaceae and collected Fabaceae

Warburg, Otto
* July 20, 1859 – February 10, 1938 †
German Confederation; German Empire; Weimar Republic; Nazi Germany
Identified Smilacaceae and collected Piperaceae