Ptilium crista-castrensis
PNW
AK
BC
ID
MT
OR
WA
YK
506 specimens from 11 herbaria:
Alaska (323)
British Columbia (119)
Idaho (2)
Montana (31)
Oregon (4)
Washington (13)
Yukon Territory (14)
98 images from 3 herbaria:
ALA (95)
SRP (1)
WTU (2)