Penstemon caelestinus
PNW
MT
27 specimens from 7 herbaria:
Montana (27)
No County (2)
Flathead (2)
Granite (2)
Lewis and Clark (2)
Mineral (1)
Missoula (11)
Powell (7)
11 images from 5 herbaria:
ID (1)
MONT (6)
MONTU (2)
RM (1)
WTU (1)