Psora cerebriformis
PNW
BC
ID
MT
OR
WA
39 specimens from 7 herbaria:
British Columbia (9)
Idaho (17)
Montana (3)
Oregon (4)
Washington (6)
29 images from 5 herbaria:
CRMO (2)
RR (21)
SRP (2)
SRP-L (3)
VALE (1)