Poa annua
PNW
AK
BC
ID
MT
OR
WA
669 specimens from 32 herbaria:
Alaska (53)
British Columbia (142)
Idaho (90)
Montana (47)
Oregon (125)
Washington (207)
241 images from 27 herbaria:
BLMVL (1)
CIC (13)
COCC (1)
EVE (1)
EWU (2)
HPSU (9)
ID (37)
IDE (9)
IDS (15)
MONT (12)
MONTU (31)
MORA (2)
NOCA (11)
OSC (9)
PLU (4)
PSM (2)
REED (5)
SAJH (1)
SOC (11)
SRP (24)
TFBLM (1)
UAAH (1)
UBC (6)
UWB (1)
WS (6)
WTU (16)
WWB (10)