Coptis trifolia
PNW
AK
BC
ID
OR
WA
YK
143 specimens from 12 herbaria:
Alaska (83)
British Columbia (52)
Idaho (3)
Oregon (3)
Washington (1)
Yukon Territory (1)
79 images from 8 herbaria:
ALA (60)
BABY (1)
EWU (1)
HPSU (1)
ID (2)
SRP (2)
UAAH (5)
UBC (7)