Penstemon attenuatus var. attenuatus
PNW
ID
MT
OR
WA
580 specimens from 17 herbaria:
Idaho (345)
Montana (52)
Oregon (118)
Washington (65)
199 images from 13 herbaria:
BLMVL (1)
CIC (10)
CIC-PYNF (1)
HPSU (1)
ID (91)
IDE (1)
IDS (9)
MONTU (10)
NOCA (2)
SRP (49)
WCW (5)
WTU (16)
WWB (3)