Penstemon serrulatus
PNW
AK
BC
ID
MT
OR
WA
724 specimens from 23 herbaria:
Alaska (1)
British Columbia (95)
Idaho (3)
Montana (1)
Oregon (233)
Washington (391)
179 images from 17 herbaria:
CIC (1)
CIC-PYNF (1)
HJAEF (1)
HJAEFB (2)
HPSU (17)
ID (13)
IDS (3)
NOCA (15)
PLU (41)
PSM (12)
REED (4)
SOC (1)
SRP (9)
UBC (28)
WCW (3)
WTU (5)
WWB (23)