Coptis trifolia
PNW
AK
BC
ID
OR
WA
83 specimens from 13 herbaria:
Alaska (22)
British Columbia (52)
Idaho (3)
Oregon (3)
Washington (3)
33 images from 9 herbaria:
BABY (1)
EWU (1)
HPSU (1)
ID (2)
SRP (2)
UAAH (5)
UBC (7)
WS (1)
WTU (13)