Trelease, William

* February 22, 1857 – January 01, 1945 †

United States

Asparagaceae

Collected Asparagaceae and identified Viburnaceae

Lucien Marcus Underwood
Underwood, Lucien Marcus

* October 26, 1853 – November 16, 1907 †

United States

Pucciniaceae

Collected Pucciniaceae and identified Pucciniaceae

Wagner, Florence Signaigo

* February 18, 1919 – October 21, 2019 †

United States

Ophioglossaceae

Collected Ophioglossaceae and identified Dryopteridaceae

Zenkert, Charles Anthony

* 1886 – 1972 †

Asteraceae

Collected Asteraceae and identified Rosaceae