labellum definition

  • noun:
    • The usually enlarged petal of an orchid flower.
    • A liplike component, for instance the tip associated with proboscis of numerous insects, used for lapping up liquids.
    • the reduced central petal of orchid plants, frequently created become showy and attract pollinators.
    • the low or evidently anterior petal of an orchidaceous rose, usually of a tremendously inquisitive form.
    • A small appendage beneath the top lip or labrum of certain pests.
    • In botany, among the three divisions of an orchidaceous corolla, varying from the others in shape or way, rather than seldom spurred; the lip.
    • In entomology, an integral part of the mouth of an insect, by some regarded as being the epipharynx. In Diptera the labellum is regarded as a couple of tumid lobes terminating the theca for the proboscis.

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