请输入您要查询的英文单词:

 

单词 pteridium
释义

Pteridium


Thesaurus
Noun1.Pteridium - a genus of ferns belonging to the family DennstaedtiaceaePteridium - a genus of ferns belonging to the family Dennstaedtiaceaegenus Pteridiumfern genus - genera of ferns and fern alliesDennstaedtiaceae, family Dennstaedtiaceae - one of a number of families into which Polypodiaceae has been subdivided in some classification systemspasture brake, Pteridium aquilinum, bracken, brake - large coarse fern often several feet high; essentially weed ferns; cosmopolitanbracken, Pteridium esculentum - fern of southeastern Asia; not hardy in cold temperate regions

Pteridium


Pteridium

 

a genus of ferns of the family Pteridiaceae. They are herbaceous perennial plants with a creeping, branched root-stock. The solitary fronds are leathery, twice and thrice pinnate, and on long, thick stalks; they are often pubescent beneath. The sporangia are covered by the curled leaf margins.

There are two species of Pteridium. The common brake, or bracken (P. aquilinum), is distributed almost throughout the world, in coniferous and mixed forests. It forms a thick cover on felled trees and is encountered on mountains (Carpathians, Caucasus). P. tauricum, a liana with reddish pubescence on the underside, grows in the foothills and in the lower mountain zone of the Crimea and the Caucasus. The young leaves are sometimes used as food. The starch-rich rootstocks are eaten by livestock; they are poisonous to cattle and horses.

Pteridium


Related to Pteridium: Bracken fern
  • noun

Synonyms for Pteridium

noun a genus of ferns belonging to the family Dennstaedtiaceae

Synonyms

  • genus Pteridium

Related Words

  • fern genus
  • Dennstaedtiaceae
  • family Dennstaedtiaceae
  • pasture brake
  • Pteridium aquilinum
  • bracken
  • brake
  • Pteridium esculentum
随便看

 

英语词典包含2567994条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/4 2:47:06