Physcia caesia
PNW
AK
BC
ID
MT
OR
WA
223 specimens from 11 herbaria:
Alaska (89)
British Columbia (72)
Idaho (12)
Montana (8)
Oregon (8)
Washington (34)
69 images from 7 herbaria:
ALA (37)
SRP (1)
SRP-L (2)
OSC (12)
RR (13)
CRMO (3)
BBLM (1)