Parmelia
squarrosa
PNW
AK
BC
MT
OR
WA
123 specimens from 8 herbaria:
Alaska (85)
British Columbia (21)
Montana (1)
Oregon (12)
Washington (4)
72 images from 5 herbaria:
ALA (36)
OSC (26)
RR (8)
SRP-L (1)
SRP (1)