Poa trivialis
PNW
AK
BC
ID
MT
OR
WA
YK
317 specimens from 31 herbaria:
Alaska (25)
British Columbia (77)
Idaho (20)
Montana (13)
Oregon (99)
Washington (81)
Yukon Territory (2)
112 images from 23 herbaria:
ALA (11)
BBLM-OWY (1)
BLMMD (1)
BOIS (2)
CIC (4)
EWU (4)
HPSU (6)
ID (7)
IDS (1)
MONT (3)
MONTU (5)
NOCA (4)
PLU (9)
PSM (4)
REED (3)
RM (1)
SOC (7)
SRP (10)
UBC (5)
UWB (2)
WCW (1)
WTU (9)
WWB (12)