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sphenopsida

/sfɪˈnɒp.sɪ.də/

翻译: 楔叶纲,是蕨类植物门下的一个分类纲,包括木贼(问荆)及其已灭绝的近缘类群,特征为茎分节和轮生叶。

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noun

/sfɪˈnɒp.sɪ.də/C2formalscientific
  • zh楔叶纲,是蕨类植物门下的一个分类纲,包括木贼(问荆)及其已灭绝的近缘类群,特征为茎分节和轮生叶。

A taxonomic class of vascular plants that includes horsetails and their extinct relatives, characterized by jointed stems and whorled leaves.

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  1. Horsetails and related formsC2formalscientific

    A class of vascular plants that includes horsetails and their extinct relatives, characterized by jointed stems and whorls of leaves.

    zh木贼纲

    • Sphenopsida are known for their distinctive ribbed stems.
    • Fossil records show that Sphenopsida were abundant during the Carboniferous period.
    • Modern horsetails are the only surviving members of the Sphenopsida class.