Paul H. Allen

* August 29, 1911 – November 14, 1963 †

United States

Piperaceae

Collected Piperaceae and identified Orchidaceae

Leslie Hubricht

* January 11, 1908 – September 16, 2005 †

United States

Polygyridae

Collected Polygyridae and identified Polygyridae

Russell Jacob Seibert

* August 14, 1914 – November 28, 2004 †

United States

Euphorbiaceae

Collected Euphorbiaceae and identified Euphorbiaceae

Julian Alfred Steyermark

* January 27, 1909 – October 15, 1988 †

United States

Poaceae

Collected Poaceae and identified Rubiaceae