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Ceanothus cyaneus
Also called Lakeside Ceanothus, San Diego Mountain Lilac
Ceanothus cyaneus is a species of flowering shrub in the genus Ceanothus known commonly as the San Diego buckbrush and Lakeside ceanothus. This species is found in the Peninsular Ranges of San Diego County, California, and known from one occurrence in Baja California. It is characterized by brilliant blue flowers, glossy green foliage, and is regarded as one of the most beautiful members of the genus.
This species is distributed throughout part of San Diego County, California in the United States and has one historical occurrence in Baja California, Mexico. In San Diego County, it is found in the inland chaparral on the Peninsular Range foothills near the communities of Lakeside and Crest. This plant occurs in dense, almost impenetrable chaparral on igneous rock and rocky, coarse sandy loams. In Baja California, a single historical collection is known from near the Cerro Coronel, in between Tijuana and La Mision.
This species was introduced into cultivation in California by Theodore Payne. It requires good drainage, must be kept dry during summer, and is not tolerant of frost.
New Jersey tea · Feltleaf ceanothus · Cerro Bola Ceanothus · Ceanothus buxifolius · Ceanothus caeruleus · Rincon Ridge ceanothus · Whitethorn ceanothus · Hoaryleaf ceanothus · Buckbrush · Sandscrub ceanothus · Ceanothus depressus · Calistoga ceanothus
Text excerpted from the Wikipedia article Ceanothus cyaneus by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
