Poa annua
PNW
AK
BC
ID
MT
OR
WA
YK
714 specimens from 30 herbaria:
Alaska (106)
British Columbia (141)
Idaho (99)
Montana (61)
Oregon (117)
Washington (181)
Yukon Territory (9)
262 images from 22 herbaria:
ALA (53)
BLMVL (1)
CIC (13)
EVE (1)
EWU (2)
HPSU (8)
ID (30)
IDE (8)
IDS (15)
MONT (12)
MONTU (31)
NOCA (11)
PLU (4)
PSM (2)
REED (5)
RM (7)
SOC (11)
SRP (19)
UBC (7)
UWB (1)
WTU (11)
WWB (10)