Cetraria
islandica
PNW
AK
BC
MT
OR
WA
YK
484 specimens from 9 herbaria:
Alaska (294)
British Columbia (135)
Montana (10)
Oregon (1)
Washington (32)
Yukon Territory (12)
173 images from 4 herbaria:
ALA (155)
RR (13)
SRP-L (2)
SRP (3)