Letharia columbiana
PNW
BC
ID
MT
OR
WA
1174 specimens from 13 herbaria:
British Columbia (34)
Idaho (102)
Montana (138)
Oregon (744)
Washington (155)
1095 images from 8 herbaria:
ALA (1)
BBLM (1)
CRMO (6)
OSC (1072)
RR (12)
SRP (1)
SRP-L (1)
WTU (1)