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单词 erigeron
释义

erigeron


erigeron

(ɪˈrɪdʒərən; -ˈrɪɡ-) n (Plants) any plant of the genus Erigeron, whose flowers resemble asters but have narrower rays: family Asteraceae (composites). See also fleabane1[C17: via Latin from Greek, from ēri early + gerōn old man; from the white down characteristic of some species]

e•rig•er•on

(ɪˈrɪdʒ əˌrɒn, -ər ən)

n. any composite plant of the genus Erigeron, having asterlike flower heads but with narrower and usu. more numerous white or purple rays. [1595–1605; < Latin ērigeron the plant groundsel < Greek ērigérōn]
Thesaurus
Noun1.erigeron - cosmopolitan genus of usually perennial herbs with flowers that resemble astersErigeron - cosmopolitan genus of usually perennial herbs with flowers that resemble asters; leaves occasionally (especially formerly) used medicinallygenus Erigeronasterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubsaster family, Asteraceae, Compositae, family Asteraceae, family Compositae - plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinniafleabane - any of several North American plants of the genus Erigeron having daisylike flowers; formerly believed to repel fleas

Erigeron


Erigeron

 

(fleabane), a genus of plants of the family Compositae. They are perennial and, less commonly, annual or biennial grasses or subshrubs. The leaves are entire and alternate. The inflorescences are heads that are solitary at the ends of unbranched stems or are gathered into a raceme, corymb, or panicle. The ray flowers have narrow, often threadlike ligules and form two or more series. The achenes have a sessile pappus of one or two rows of brittle bristles.

There are more than 200 species of Erigeron, distributed on all continents; they are most diverse in North America. In the USSR there are more than 70 species, including the common weeds Erigeron acer and E. canadensis. These two species, which are native to North America, contain essential oils. Certain varieties of Erigeron contain tanning substances in their stems and leaves. Many species are ornamentals; hybrid perennials, such as E. speciosus, E. aurantiacus, and E. macranthus, are raised by florists as tall ornamentals. Short varieties are grown in rock gardens.

Erigeron


  • noun

Synonyms for Erigeron

noun cosmopolitan genus of usually perennial herbs with flowers that resemble asters

Synonyms

  • genus Erigeron

Related Words

  • asterid dicot genus
  • aster family
  • Asteraceae
  • Compositae
  • family Asteraceae
  • family Compositae
  • fleabane
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更新时间:2024/12/22 23:25:24