Penstemon glaber
PNW
ID
MT
OR
WA
29 specimens from 11 herbaria:
Idaho (8)
Montana (14)
Oregon (2)
Washington (5)
25 images from 9 herbaria:
BOIS (1)
ID (8)
IDS (1)
MONT (3)
MONTU (6)
PSM (2)
REED (1)
WTU (1)
WWB (2)