Rheum rhabarbarum
PNW
AK
BC
ID
MT
OR
WA
YK
18 specimens from 8 herbaria:
Alaska (2)
British Columbia (2)
Idaho (2)
Montana (4)
Oregon (2)
Washington (5)
Yukon Territory (1)
11 images from 7 herbaria:
ALA (2)
BABY (1)
ID (1)
MONTU (2)
PLU (1)
UBC (1)
WTU (3)