Sigfrid Oskar Immanuel Almquist
Almquist, Sigfrid Oskar Immanuel

* February 15, 1844 – October 18, 1923 †

Sweden

Collected Asteraceae and identified Cyperaceae

Tiselius, Gustaf

* August 25, 1833 – February 21, 1904 †

Sweden

Collected Potamogetonaceae and identified Potamogetonaceae