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单词 ochrea
释义

Definition of ochrea in English:

ochrea

nounPlural ochreae, Plural ochreasˈɒkrɪə
Botany

  • A dry sheath round a stem formed by the cohesion of two or more stipules, characteristic of the dock family.

    〔植〕托叶鞘

    Example sentencesExamples
    • The stipules take the form of a protective organ, the ochrea, which at first totally covers the shoot bud, and then remains behind as a dry collar.
    • In this family, the ochrea completely encircles the stem.
    • The plant has the characteristic ochrea of the buckwheat family at the junction of the petiole and stem.
    • The ochrea in this species are ciliate (with a fringe of hairs) along their margin.
    Synonyms
    covering, cover, case, casing, envelope, sleeve, wrapper

Origin

Mid 19th century: from Latin, literally 'protective legging'.
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更新时间：2025/6/19 7:48:57