Penstemon richardsonii
PNW
BC
ID
OR
WA
566 specimens from 24 herbaria:
British Columbia (44)
Idaho (3)
Oregon (238)
Washington (281)
299 images from 21 herbaria:
CIC (3)
CIC-PYNF (2)
COCC (6)
EWU (10)
HPSU (7)
ID (20)
IDS (9)
MONTU (1)
NOCA (2)
OSC (68)
PLU (6)
PSM (1)
REED (4)
SEF (2)
SOC (2)
SRP (5)
UBC (1)
WCW (5)
WS (118)
WTU (21)
WWB (6)