Ceanothus thyrsiflorus
PNW
OR
WA
96 specimens from 14 herbaria:
Oregon (95)
Washington (1)
70 images from 12 herbaria:
COCC (3)
HPSU (2)
ID (6)
IDS (1)
OSC (39)
PLU (1)
PSM (3)
REED (1)
SOC (10)
SRP (1)
WCW (1)
WTU (2)