Joseph Charles Arthur
Joseph Charles Arthur

January 11, 1850 – April 30, 1942

United States

Pucciniaceae

Collected Pucciniaceae and identified Pucciniaceae

Conway MacMillan
Conway MacMillan

August 26, 1867 – June 05, 1929

United States

Pucciniaceae

Collected Pucciniaceae and identified Pucciniaceae