Penstemon attenuatus var. attenuatus
PNW
ID
MT
OR
WA
622 specimens from 19 herbaria:
Idaho (358)
Montana (39)
Oregon (136)
Washington (89)
328 images from 17 herbaria:
BLMVL (1)
CIC (10)
CIC-PYNF (1)
HPSU (1)
ID (95)
IDE (1)
IDS (9)
MONTU (9)
NEZ (1)
NOCA (2)
OSC (48)
SOC (1)
SRP (56)
WCW (5)
WS (56)
WTU (29)
WWB (3)