Ceanothus lemmonii was created in 1889.
Arabis lemmonii was created in 1887.
Castilleja lemmonii was created in 1878.
Ceanothus jepsonii was created in 1894.
Ceanothus griseus was created in 1897.
Ceanothus americanus was created in 1753.
Ceanothus cordulatus was created in 1863.
Ceanothus purpureus was created in 1901.
Ceanothus sonomensis was created in 1939.
Ceanothus tomentosus was created in 1889.
Ceanothus gloriosus was created in 1937.
Ceanothus greggii was created in 1853.
Ceanothus masonii was created in 1942.