Brassica nigra
PNW
BC
ID
MT
OR
WA
162 specimens from 24 herbaria:
British Columbia (17)
Idaho (30)
Montana (6)
Oregon (64)
Washington (45)
68 images from 17 herbaria:
BBLM (1)
BOIS (2)
CIC (2)
EWU (4)
HPSU (5)
ID (6)
IDE (1)
IDS (8)
MONT (7)
MONTU (1)
PSM (5)
SOC (8)
SRP (5)
UWB (1)
WSTC (1)
WTU (4)
WWB (7)