Usnea
hirta
PNW
AK
BC
ID
MT
OR
WA
259 specimens from 8 herbaria:
Alaska (2)
British Columbia (47)
Idaho (15)
Montana (167)
Oregon (11)
Washington (15)
199 images from 5 herbaria:
ALA (2)
BBLM (1)
OSC (193)
RR (2)
SRP-L (1)