Penstemon diphyllus
PNW
ID
MT
OR
WA
181 specimens from 17 herbaria:
Idaho (93)
Montana (83)
Oregon (3)
Washington (2)
104 images from 14 herbaria:
BBLM (1)
BOIS (2)
CIC (7)
CIC-PYNF (4)
ID (22)
IDS (7)
MONT (18)
MONTU (26)
OSC (1)
PLU (1)
SRP (9)
WCW (3)
WTU (2)
WWB (1)