Helia Bravo
Bravo, Helia

(b. September 30, 1901 – d. September 26, 2001)

Mexico

Identified Cactaceae and collected Cactaceae

Frederik Liebmann
Liebmann, Frederik

(b. October 10, 1813 – d. October 29, 1856)

Denmark

Identified Fagaceae and collected Poaceae