North American Bryophyte Herbaria
- building a Global Consortium of Bryophytes and Lichens as keystones of cryptobiotic communities -
Cryptogamae exsiccatae editae a Museo Palatino Vindobonensi(IndExs #372281968)
Abbreviation: Petrak, Crypt. Exs.
Editor(s): Petrak, F.
Range: 3201 - 4700
Notes: Usually cited as "Anonymous"; author changes are given according Pfister (1985). There are several numbers used again for issuing the same species in later times without any note on the labels.