Ceanothus masonii was created in 1942.
Stylocline masonii was created in 1992.
Lilaeopsis masonii was created in 1977.
Ceanothus lemmonii was created in 1889.
Ceanothus americanus was created in 1753.
Ceanothus purpureus was created in 1901.
Ceanothus tomentosus was created in 1889.
Ceanothus sonomensis was created in 1939.
Ceanothus greggii was created in 1853.
Ceanothus gloriosus was created in 1937.
Ceanothus jepsonii was created in 1894.
Ceanothus griseus was created in 1897.
Ceanothus cordulatus was created in 1863.