Viburnum opulus var. americanum
PNW
BC
ID
MT
WA
27 specimens from 8 herbaria:
British Columbia (16)
Idaho (2)
Montana (1)
Washington (8)
11 images from 7 herbaria:
ID (1)
MONTU (1)
SRP (1)
UBC (1)
WCW (2)
WS (2)
WTU (3)