Brassica nigra
PNW
BC
ID
MT
OR
WA
175 specimens from 22 herbaria:
British Columbia (17)
Idaho (28)
Montana (6)
Oregon (78)
Washington (46)
105 images from 19 herbaria:
BBLM (1)
BOIS (2)
CIC (2)
EWU (4)
HPSU (6)
ID (6)
IDE (1)
IDS (8)
MONT (7)
MONTU (1)
MORA (1)
OSC (32)
PSM (5)
SOC (8)
SRP (4)
UWB (1)
WS (3)
WTU (6)
WWB (7)