Penstemon triphyllus
PNW
ID
MT
OR
WA
252 specimens from 15 herbaria:
Idaho (135)
Montana (1)
Oregon (47)
Washington (69)
82 images from 10 herbaria:
BLMVL (2)
BOIS (2)
CIC (5)
CIC-PYNF (1)
EWU (2)
ID (45)
IDS (11)
SRP (5)
WCW (3)
WTU (6)