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单词 Lycopsida
释义

Definition of Lycopsida in English:

Lycopsida

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

    〔植〕(蕨类植物中的)石松纲

    Example sentencesExamples
    • For example each of the major taxa of vascular plants may be considered as either Classes (e.g. Lycopsida) or the next higher rank, a Division.
    • Members of the Lycopsida have true stems, leaves and (usually) roots.
    • Asteroxylon could be seen as an intermediate in the evolution of true leaves in the Lycopsida.
    • The clade Lycopsida, of which the living lycopsids are members, also diverged in the Early Devonian.

Derivatives

  • lycopsid

  • noun & adjective
    Botany
    • However, unlike lycopsids, Pennsylvanian sphenopsids were not coal-swamp specialists.
      Example sentencesExamples
      • Experiments suggest that arborescent lycopsid propagules had a rather limited dispersal range.
      • Herbaceous ‘ferns’ and lycopsids became rare to absent, although lycopsid trees remained.
      • Although a relatively inconspicuous component of the modern flora, the lycopsids were arborescent ecosystem dominants in the late Paleozoic.
      • Arborescent lycopsids began life as an embryo germinating from an indehiscent megaspore.

Origin

Modern Latin (plural), from Greek lukos 'wolf' + opsis 'appearance'.

Definition of Lycopsida in US English:

Lycopsida

plural nounlīˈkäpsədə
Botany
  • A class of pteridophyte plants that comprises the club mosses and their extinct relatives.

    〔植〕(蕨类植物中的)石松纲

    Example sentencesExamples
    • Members of the Lycopsida have true stems, leaves and (usually) roots.
    • The clade Lycopsida, of which the living lycopsids are members, also diverged in the Early Devonian.
    • Asteroxylon could be seen as an intermediate in the evolution of true leaves in the Lycopsida.
    • For example each of the major taxa of vascular plants may be considered as either Classes (e.g. Lycopsida) or the next higher rank, a Division.

Origin

Modern Latin (plural), from Greek lukos ‘wolf’ + opsis ‘appearance’.

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更新时间:2024/12/27 16:05:05