Hypogymnia occidentalis
PNW
AK
BC
ID
MT
OR
WA
YK
774 specimens from 10 herbaria:
Alaska (77)
British Columbia (128)
Idaho (179)
Montana (57)
Oregon (114)
Washington (218)
Yukon Territory (1)
480 images from 6 herbaria:
ALA (9)
OSC (432)
SRP-L (2)
RR (35)
BBLM (1)
SRP (1)