Penstemon davidsonii var. davidsonii
PNW
BC
ID
OR
WA
389 specimens from 15 herbaria:
British Columbia (4)
Idaho (1)
Oregon (270)
Washington (114)
211 images from 13 herbaria:
BLMVL (1)
COCC (6)
HPSU (6)
ID (10)
IDS (3)
MORA (1)
NOCA (6)
OSC (124)
SOC (26)
SRP (3)
WS (1)
WTU (20)
WWB (4)