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hamamelidae

/ˌhæm.əˈmel.ɪ.diː/

翻译: 金缕梅亚纲,一个分类学上的植物类群,指一类主要为木本被子植物的亚纲,被认为是最原始的被子植物之一,花被片不发达或缺失,常为单性花并形成柔荑花序,风媒传粉;包括桦木科和壳斗科等,有时被归类为超目。

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noun

/ˌhæm.əˈmel.ɪ.diː/formalscientific
  • zh金缕梅亚纲,一个分类学上的植物类群,指一类主要为木本被子植物的亚纲,被认为是最原始的被子植物之一,花被片不发达或缺失,常为单性花并形成柔荑花序,风媒传粉;包括桦木科和壳斗科等,有时被归类为超目。

A scientific taxonomic group referring to a subclass of chiefly woody plants considered among the most primitive of angiosperms, with poorly developed or lacking perianth, often unisexual flowers in catkins, and wind pollination; includes families such as Betulaceae and Fagaceae, sometimes classified as a superorder.

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  1. A subclass of flowering plantsC2formalscientific

    A group of chiefly woody plants considered among the most primitive of angiosperms; perianth poorly developed or lacking; flowers often unisexual and often in catkins and often wind pollinated; contains 23 families including the Betulaceae and Fagaceae (includes the Amentiferae); sometimes classified as a superorder.

    zh金缕梅亚纲

    • Hamamelidae includes many familiar trees like oaks and birches.
    • The flowers of Hamamelidae are often wind-pollinated and lack showy petals.
    • Taxonomists sometimes classify Hamamelidae as a superorder within the angiosperms.

    同义词amentiferae