Viburnum opulus
PNW
BC
ID
MT
OR
WA
128 specimens from 16 herbaria:
British Columbia (47)
Idaho (10)
Montana (14)
Oregon (19)
Washington (38)
50 images from 12 herbaria:
CIC (1)
CIC-PYNF (1)
HPSU (4)
ID (3)
IDS (1)
MONTU (12)
NOCA (2)
PLU (4)
SRP (3)
UBC (12)
UWB (2)
WTU (5)