Physcia
caesia
PNW
AK
BC
ID
MT
OR
WA
244 specimens from 11 herbaria:
Alaska (89)
British Columbia (72)
Idaho (15)
Montana (12)
Oregon (21)
Washington (35)
109 images from 8 herbaria:
ALA (55)
BBLM (1)
CRMO (3)
OSC (33)
RR (13)
SRP (1)
SRP-L (2)
WTU (1)