Humulus lupulus
PNW
BC
ID
MT
OR
WA
130 specimens from 21 herbaria:
British Columbia (17)
Idaho (22)
Montana (18)
Oregon (34)
Washington (39)
78 images from 18 herbaria:
COCC (2)
HPSU (4)
ID (13)
IDE (3)
IDS (3)
MONT (3)
MONTU (13)
NEZ (1)
NOCA (6)
OSC (3)
PLU (1)
PSM (3)
SRP (7)
UBC (5)
WCW (2)
WS (3)
WTU (4)
WWB (2)