Ceanothus. Ceanothus thyrsiflorus.
Botanical name:
Classic texts: Ellingwood 1919.
Classic texts: Ellingwood 1919.
Classic texts: Boericke 1901.
Ceanothus thyrsiflorus Eschsch.
Engl.: blueblossom, California lilac, deer bush.
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.