Butomus umbellatus
PNW
BC
ID
MT
OR
WA
63 specimens from 11 herbaria:
British Columbia (7)
Idaho (21)
Montana (12)
Oregon (4)
Washington (19)
29 images from 8 herbaria:
CIC (1)
ID (2)
IDE (1)
IDS (5)
MONT (5)
MONTU (5)
UBC (1)
WTU (9)