Usnea
filipendula
PNW
AK
BC
ID
MT
OR
WA
523 specimens from 8 herbaria:
Alaska (24)
British Columbia (90)
Idaho (13)
Montana (2)
Oregon (233)
Washington (161)
292 images from 5 herbaria:
ALA (2)
OSC (285)
SRP (1)
RR (2)
WTU (2)