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出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/05/01 14:33 UTC 版)
Ceanothus L. (pronounced /ˌsiː.əˈnoʊθəs/) is a genus of about 50–60 species of shrubs or small trees in the buckthorn family Rhamnaceae. The genus is confined to North America, the center of its distribution in California, with some species (e.g. C. americanus) in the eastern United States and southeast Canada, and others (e.g. C. coeruleus) extending as far south as Guatemala. Most are shrubs 0.5–3 m tall, but C. arboreus and C. thyrsiflorus, both from California, can be small trees up to 6–7 m tall.