Sinapis alba
PNW
BC
ID
MT
WA
YK
20 specimens from 10 herbaria:
British Columbia (9)
Idaho (4)
Montana (5)
Washington (1)
Yukon Territory (1)
9 images from 6 herbaria:
BABY (1)
IDE (3)
IDS (1)
MONT (1)
MONTU (2)
UBC (1)