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单词 phanerogam
释义

phanerogam

/ˈfan(ə)rə(ʊ)ɡam /
noun Botany
Old-fashioned term for spermatophyte.Plants with flowers and leaves (phanerogams and Latifoliae) appeared no earlier than the Cretaceous - in other words about 100 million years ago, long after the first protophasmids....
  • Unlike phanerogams, which undergo long-range dispersal by seeds (seed plants) or spores (ferns and mosses), lichens have two fundamentally different mechanisms of long-range dispersal.
  • It is known that, among the four spontaneous phanerogams colonising the sandy and muddy loose sea-bottoms of the Mediterranean Sea, i.e. Posidonia oceanica, Cymodocea nodosa, Zostera noltii and Zostera marina, mainly the Posidonia and the Cymodocea are the most frequent ones.

Derivatives

phanerogamic

/ˌfan(ə)rə(ʊ)ˈɡamɪk / adjective ...
  • The phanerogamic flora of the New Hebrides is mainly of the Malesian type both in floristic composition and structure of the vegetation.
  • In this area they were found seven sites inhabited for a total of 250 species related with phanerogamic flora.

phanerogamous

/ˌfan(ə)ˈrɒɡəməs/ adjective ...
  • New Holland contains more than forty European phanerogamous plants.
  • Some plants, like ferns, although they are not phanerogamous (therefore lacking flowers and reproducing by means of spores), have been historically considered together with these.

Origin

Mid 19th century: from French phanérogame, from Greek phaneros 'visible' + gamos 'marriage'.

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更新时间:2024/9/21 13:52:50