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词汇 hymenium
释义

Definition of hymenium in English:

hymenium

nounPlural hymenia hʌɪˈmiːnɪəmhīˈmēnēəm
Botany
  • (in higher fungi) a surface consisting mainly of spore-bearing structures (asci or basidia).

    〔植〕(高等真菌的)子实层

    Example sentencesExamples
    • The cross-section shows the cup to be made of vegatative hyphae with the hymenium layer exposed.
    • Unlike some related, duller-coloured species, the hymenium does not turn blood-red when it is scratched.
    • The cells in an Ascomycete hymenium tend to be longer and thinner than those in a Basidiomycete hymenium.
    • Since the perithecium grows out into the medium from the hymenium after nuclear pairing, this is ascohymenial development.
    • This middle layer is subtended by the hymenium which was also devoid of epiphytic organisms.

Derivatives

  • hymenial

  • adjective
    Botany
    • Schizopora species have only hymenial cystidia and no tramacystidia.
      Example sentencesExamples
      • If you cannot see them properly, push gently on the cover slip until the hymenial elements lie free in the medium.
      • Beneath the gills there is a cavity, the hymenial chamber, which is still closed in this illustrated sample.
      • The latter species has lecanorine apothecia with black hymenial disks.
      • Then there will be either lamellae, or gills, or pores, with hymenial layers bearing the basidia.

Origin

Early 19th century: from Greek humenion, diminutive of humēn 'membrane'.

Definition of hymenium in US English:

hymenium

nounhīˈmēnēəm
Botany
  • (in higher fungi) a surface consisting mainly of spore-bearing structures (asci or basidia).

    〔植〕(高等真菌的)子实层

    Example sentencesExamples
    • This middle layer is subtended by the hymenium which was also devoid of epiphytic organisms.
    • Unlike some related, duller-coloured species, the hymenium does not turn blood-red when it is scratched.
    • The cells in an Ascomycete hymenium tend to be longer and thinner than those in a Basidiomycete hymenium.
    • Since the perithecium grows out into the medium from the hymenium after nuclear pairing, this is ascohymenial development.
    • The cross-section shows the cup to be made of vegatative hyphae with the hymenium layer exposed.

Origin

Early 19th century: from Greek humenion, diminutive of humēn ‘membrane’.

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