Charles C. Deam

* August 30, 1865 – May 29, 1953 †

United States

Cyperaceae

Collected Cyperaceae and identified Poaceae

Henri François Pittier
Henri François Pittier

* August 13, 1857 – January 27, 1950 †

Switzerland; United States; Venezuela

Fabaceae

Collected Fabaceae and identified Melastomataceae

Adolphe Tonduz

* 1862 – 1921 †

Switzerland

Piperaceae

Collected Piperaceae and identified Piperaceae

Hans von Türckheim
Hans von Türckheim

* May 27, 1853 – May 07, 1920 †

Germany

Asteraceae

Collected Asteraceae and identified Lamiaceae