Penstemon glaber
PNW
ID
MT
OR
WA
35 specimens from 12 herbaria:
Idaho (11)
Montana (17)
Oregon (2)
Washington (5)
28 images from 10 herbaria:
BOIS (1)
ID (8)
IDS (1)
MONT (4)
MONTU (6)
PSM (2)
REED (1)
RM (1)
USFS (2)
WWB (2)