George Engelmann
George Engelmann

February 02, 1809 – February 04, 1884

United States of America; Free City of Frankfurt

Pinaceae

Collected Pinaceae and identified Cactaceae

Isaac Comly Martindale
Isaac Comly Martindale

July 15, 1842 – January 03, 1893

United States

Asteraceae

Collected Asteraceae and identified Asteraceae

Charles Sprague Sargent
Charles Sprague Sargent

April 24, 1841 – March 22, 1927

United States

Rosaceae

Collected Rosaceae and identified Rosaceae

George Vasey
George Vasey

February 28, 1822 – March 04, 1893

United States

Poaceae

Collected Poaceae and identified Poaceae

Arthur Whistler

October 12, 1944 – April 02, 2020

United States

Poaceae

Collected Poaceae and identified Rubiaceae