Lolium perenne
PNW
AK
BC
ID
MT
OR
WA
YK
376 specimens from 30 herbaria:
Alaska (19)
British Columbia (50)
Idaho (37)
Montana (16)
Oregon (116)
Washington (137)
Yukon Territory (1)
177 images from 22 herbaria:
ALA (6)
CIC (8)
EWU (5)
HJAEF (1)
HPSU (13)
ID (24)
IDE (3)
IDS (4)
LINF (2)
MONT (10)
MONTU (4)
NOCA (5)
PLU (11)
PSM (16)
REED (3)
SOC (21)
SRP (4)
UBC (6)
UWB (1)
WCW (1)
WTU (10)
WWB (19)