Quercus robur
PNW
BC
ID
OR
WA
55 specimens from 10 herbaria:
British Columbia (12)
Idaho (11)
Oregon (21)
Washington (11)
28 images from 8 herbaria:
CIC (1)
HPSU (3)
ID (3)
IDS (4)
NOCA (3)
SRP (4)
UBC (3)
WTU (7)