Hypogymnia
occidentalis
PNW
AK
BC
ID
MT
OR
WA
YK
1784 specimens from 11 herbaria:
Alaska (78)
British Columbia (131)
Idaho (191)
Montana (71)
Oregon (818)
Washington (494)
Yukon Territory (1)
1492 images from 7 herbaria:
ALA (13)
BBLM (1)
OSC (1436)
RR (35)
SRP (1)
SRP-L (2)
WTU (4)