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单词 cryptogam
释义

Definition of cryptogam in English:

cryptogam

noun ˈkrɪptə(ʊ)ɡamˈkriptəˌɡam
Botany dated
  • A plant that has no true flowers or seeds, including ferns, mosses, liverworts, lichens, algae, and fungi.

    Example sentencesExamples
    • Students rotated from one scientist to another, assisting with data collection, and gained insight into each scientist's particular area (wetland ecology, cryptogams, syntaxonomy, floristics, or natural history).
    • As in other cryptogam species, the effect of polarized red light implies that phytochrome acts at the cell periphery.
    • In this subzone, herbaceous dicots, grasses, rushes, and cryptogams are dominant, and woody plants and sedges are absent.
    • The Myxomycetes represent the only group of cryptogams with species only known from the tree canopy.

Derivatives

  • cryptogamous

  • adjective krɪpˈtɒɡəməs
    Botany dated
    • Ferns and fern allies are cryptogamous plants of the phylum Polypodiophyta.
      Example sentencesExamples
      • The total number of fossil plants catalogued from those beds, cryptogamous as well as phænogamous, is upward of three thousand.
      • This has resulted in a rich vegetation mosaic comprising approximately 1,500 species of flowering plants, including 130 trees, and an estimated 2,200 cryptogamous taxa.
      • However, the cell walls of cryptogamous plants, such as bryophytes and pteridophytes, have received little attention, and so the peculiarities of the wall-polysaccharides in these plants have yet to be fully understood.
      • Fern is a common name for the cryptogamous, or spore-producing, plants belonging to the division Filicophyta, also called Filicinophyta.

Origin

Mid 19th century: from French cryptogame, from modern Latin cryptogamae (plantae), denoting non-flowering plants, from Greek kruptos 'hidden' + gamos 'marriage' (because the means of reproduction was not apparent).

 
 

Definition of cryptogam in US English:

cryptogam

nounˈkriptəˌɡam
Botany dated
  • A plant that has no true flowers or seeds, including ferns, mosses, liverworts, lichens, algae, and fungi.

    Example sentencesExamples
    • Students rotated from one scientist to another, assisting with data collection, and gained insight into each scientist's particular area (wetland ecology, cryptogams, syntaxonomy, floristics, or natural history).
    • The Myxomycetes represent the only group of cryptogams with species only known from the tree canopy.
    • In this subzone, herbaceous dicots, grasses, rushes, and cryptogams are dominant, and woody plants and sedges are absent.
    • As in other cryptogam species, the effect of polarized red light implies that phytochrome acts at the cell periphery.

Origin

Mid 19th century: from French cryptogame, from modern Latin cryptogamae (plantae), denoting non-flowering plants, from Greek kruptos ‘hidden’ + gamos ‘marriage’ (because the means of reproduction was not apparent).

 
 
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更新时间:2024/12/23 5:30:32