Caltha palustris
PNW
AK
BC
ID
OR
WA
142 specimens from 18 herbaria:
Alaska (68)
British Columbia (24)
Idaho (1)
Oregon (17)
Washington (25)
61 images from 15 herbaria:
BABY (3)
EWU (1)
HPSU (3)
ID (5)
IDS (1)
LEA (1)
LINF (1)
OSC (5)
PLU (1)
PSM (2)
SOC (1)
UAAH (29)
UBC (4)
WTU (3)
WWB (1)