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单词 urticaceae
释义

Urticaceae


Thesaurus
Noun1.Urticaceae - a family of plants of order Urticales including many nettles with stinging hairsUrticaceae - a family of plants of order Urticales including many nettles with stinging hairsfamily Urticaceae, nettle familydicot family, magnoliopsid family - family of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germinationorder Urticales, Urticales - an order of dicotyledonous plants including Moraceae and Urticaceae and Ulmaceaegenus Urtica, Urtica - a nettle yielding fiber resembling flaxBoehmeria, genus Boehmeria - false nettlegenus Helxine, genus Soleirolia, Helxine, Soleirolia - one species; a dwarf creeping mat-forming evergreen herbgenus Laportea, Laportea - mostly tropical stinging herbs or trees: nettlegenus Parietaria, Parietaria - small genus of stingless herbsgenus Pilea, Pilea - low-growing tropical perennials grown for their stingless foliagegenus Pipturus, Pipturus - an Australian genus of woody plants of the family Urticaceae

Urticaceae


Urticaceae

[‚ərd·ə′kās·ē‚ē] (botany) A family of dicotyledonous herbs in the order Urticales characterized by a single unbranched style, a straight embryo, and the lack of milky juice (latex).

Urticaceae

 

a family of dicotyledonous plants related to the family Moraceae. They are monoecious or dioecious herbs, subshrubs, shrubs, small trees with soft wood (rarely), or vines (very rarely). The leaves are alternate or opposite and simple. The tiny flowers are unattractive, mostly gathered in compound cymose inflorescences, and usually unisexual and regular.

There are approximately 45 genera (over 700 species), found almost everywhere, but mainly in the tropics. Representatives of some genera, including Urtica, Laportea, and Girardinia, have stinging hairs that cause a burning sensation when touched. In the USSR there are six genera (21 species): Urtica, Parietaria, and four genera in the Far East. Some species—for example, ramie—are spun into thread.

REFERENCE

Hutchinson, J. The Genera of Flowering Plants, vol. 2. Oxford, 1967.

Urticaceae


  • noun

Synonyms for Urticaceae

noun a family of plants of order Urticales including many nettles with stinging hairs

Synonyms

  • family Urticaceae
  • nettle family

Related Words

  • dicot family
  • magnoliopsid family
  • order Urticales
  • Urticales
  • genus Urtica
  • Urtica
  • Boehmeria
  • genus Boehmeria
  • genus Helxine
  • genus Soleirolia
  • Helxine
  • Soleirolia
  • genus Laportea
  • Laportea
  • genus Parietaria
  • Parietaria
  • genus Pilea
  • Pilea
  • genus Pipturus
  • Pipturus
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