Preissia
quadrata
PNW
AK
BC
ID
MT
OR
WA
YK
273 specimens from 8 herbaria:
Alaska (161)
British Columbia (70)
Idaho (3)
Montana (3)
Oregon (7)
Washington (14)
Yukon Territory (15)
61 images from 2 herbaria:
ALA (60)
SRP (1)