Life … Plants Vascular Plants Dicots Roses, Elms, Figs, and Allies Buckthorn Family California-lilacs Ceanothus Subg. Ceanothus Hearst's Ceanothus species 48 observations Hearst's Ceanothus Ceanothus hearstiorum Field notes Key traits Layer Shrubs Plant type Perennial Shrub From USDA PLANTS. Close