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单词 ceanothus
释义

ceanothus

enUK

ce·a·no·thus

C0181700 (sē′ə-nô′thəs)n. Any of various shrubs or small trees of the genus Ceanothus, chiefly of western North America, having showy clusters of usually blue or whitish flowers.
[New Latin, genus name, from Greek keanōthos, a kind of spiny plant, perhaps the thistle Cirsium arvense (used by Carl Linnaeus as the name for the genus of North American shrubs probably in reference to the spines borne by many species).]

ceanothus

(ˌsiːəˈnəʊθəs) n (Plants) any shrub of the North American rhamnaceous genus Ceanothus: grown for their ornamental, often blue, flower clusters[C19: New Latin, from Greek keanōthos a kind of thistle]

Ceanothus

enUK

Ceanothus

 

a genus of plants of the family Rhamnaceae. The plants are deciduous or evergreen shrubs or, less commonly, small trees. Some species have thorny branches. The alternate or opposite leaves are simple, usually petioled, and toothed; they bear deciduous stipules. The light-blue, white, pink, or red flowers are bisexual and small; they have a five-parted corolla and are gathered into umbellate clusters that form vivid panicles. The dry, rounded fruit dehisces into three nutlets.

There are about 80 species, distributed mainly in North America. Many species, especially those with light-blue and dark-blue flowers (numerous garden varieties and hybrids), are cultivated as ornamentals. The New Jersey tea (C. americanus), a deciduous shrub that reaches 1 m in height and has ovate or elliptical alternate leaves, is grown in the USSR in gardens and parks. Its white flowers are in axillary or terminal inflorescences. Its leaves were once used in North America as a substitute for tea.

REFERENCE

Derev’ia i kustarniki SSSR, vol. 4. Moscow-Leningrad, 1958.
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