网站首页  词典首页

请输入您要查询的词汇:

 

词汇 Sphenopsida
释义

Definition of Sphenopsida in English:

Sphenopsida

plural nounsfɛˈnɒpsɪdəsfiˈnäpsidə
Botany
  • A class of pteridophyte plants that comprises the horsetails and their extinct relatives.

    〔植〕楔叶纲植物

    Example sentencesExamples
    • Equisetum is an ancient genus and comprises the sole surviving representatives of the class Sphenopsida.
    • In order to build up data infrastructure on the horology of Croatian vascular flora, the present data on the distribution of taxa from the class Sphenopsida were collected from literature and herbarium sources.
    • These horsetails (Sphenopsida) were arborescent (tree-like) and grew to a height of up to 10 meters.
    • By the early Mesozoic, these had apparently become extinct, with the rather scanty fossil record of Sphenopsida consisting by then mainly of casts and impressions of stems resembling those of modern Equisetum.
    • In the past, this group was thought to be ancestral to the Sphenopsida based on their overall structure and organization, but more recent studies show their internal anatomy was more like that of the ferns.

Derivatives

  • sphenopsid

  • noun & adjective
    Botany
    • The remaining morphospecies are organs of cycads, ginkgophytes, lycopods, sphenopsids, and bryophytes.
      Example sentencesExamples
      • Ferns and sphenopsids are rare, but often well preserved.
      • The genus Hyenia was a rhizomatous plant, much like modern ferns and sphenopsids.
      • You have already studied two such lineages, the ferns and sphenopsids.
      • Both ferns and sphenopsids have members in the living flora, although their modern diversities are vastly different.

Origin

Modern Latin (plural), from Greek sphēn 'wedge' + opsis 'appearance'.

Definition of Sphenopsida in US English:

Sphenopsida

plural nounsfiˈnäpsidə
Botany
  • A class of pteridophyte plants that comprises the horsetails and their extinct relatives.

    〔植〕楔叶纲植物

    Example sentencesExamples
    • Equisetum is an ancient genus and comprises the sole surviving representatives of the class Sphenopsida.
    • In order to build up data infrastructure on the horology of Croatian vascular flora, the present data on the distribution of taxa from the class Sphenopsida were collected from literature and herbarium sources.
    • By the early Mesozoic, these had apparently become extinct, with the rather scanty fossil record of Sphenopsida consisting by then mainly of casts and impressions of stems resembling those of modern Equisetum.
    • In the past, this group was thought to be ancestral to the Sphenopsida based on their overall structure and organization, but more recent studies show their internal anatomy was more like that of the ferns.
    • These horsetails (Sphenopsida) were arborescent (tree-like) and grew to a height of up to 10 meters.

Origin

Modern Latin (plural), from Greek sphēn ‘wedge’ + opsis ‘appearance’.

随便看

 

春雷网英语在线翻译词典收录了464360条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2000-2024 Sndmkt.com All Rights Reserved 更新时间:2024/12/28 9:50:18