Corylus avellana
PNW
BC
ID
OR
WA
117 specimens from 11 herbaria:
British Columbia (12)
Idaho (3)
Oregon (52)
Washington (50)
66 images from 8 herbaria:
HPSU (4)
ID (3)
IDS (1)
OSC (22)
SRP (3)
UBC (6)
WS (6)
WTU (21)