Pouzar, Zdenek

Pringsheim, Nathanael

Puffball,

Quélet, Lucien

Rafinesque, Constantine Samuel

Ramsbottom, John

Ravanel, Henry William

Rea, Carleton

Redhead, Scott Alan

Rehm, Heinrich Simon Ludwig Friedrich Felix

Rick, S. J., Johann E.

Ricken, Adalbert