Psora cerebriformis
PNW
BC
ID
MT
OR
WA
43 specimens from 7 herbaria:
British Columbia (9)
Idaho (18)
Montana (3)
Oregon (4)
Washington (9)
33 images from 5 herbaria:
CRMO (2)
RR (21)
SRP (2)
SRP-L (7)
VALE (1)