Petasites frigidus
PNW
AK
BC
ID
MT
OR
WA
1140 specimens from 33 herbaria:
Alaska (133)
British Columbia (320)
Idaho (13)
Montana (69)
Oregon (234)
Washington (354)
565 images from 27 herbaria:
BABY (1)
BOIS (1)
CIC (2)
COCC (8)
EWU (5)
HJAEFB (1)
HPSU (28)
ID (43)
IDS (3)
LEA (1)
LINF (15)
MONT (20)
MONTU (38)
MORA (14)
NOCA (13)
OSC (21)
PLU (19)
PSM (12)
REED (7)
SOC (10)
SRP (9)
UAAH (41)
UBC (7)
WCW (24)
WS (171)
WTU (23)
WWB (28)