Lactuca
canadensis
PNW
BC
ID
MT
OR
WA
40 specimens from 8 herbaria:
British Columbia (8)
Idaho (11)
Montana (2)
Oregon (4)
Washington (15)
21 images from 7 herbaria:
EWU (1)
ID (3)
IDS (4)
MONT (3)
OSC (1)
UBC (8)
WTU (1)