Rahul Sharma (Editor)

Operculum (botany)

Updated on
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit
Covid-19
Operculum (botany)

An operculum or (in plural) opercula are botanical terms describing a certain structure or structures of certain vascular plants, mosses, or fungi which act as a cap, flap, or lid. In vascular plants, an operculum may also be called a bud cap.

Examples of structures identified as opercula include:

  • A flap of the sporangium of a moss, covering the peristome (appendages surrounding the mouth of a moss capsule).
  • The cap of the ascus in certain ascomycetous fungi.
  • A lid covering the aperture of pollen grains.
  • The bud cap covering the flowers of Eucalyptus and Corymbia trees which falls off as they open.
  • The covering of a pyxidium (fruit capsule whose upper part falls off when the seeds are released) of a plant, such as the plantain.
  • The flared leaflet that prevents a pitcher plant from accumulating rainwater.
  • References

    Operculum (botany) Wikipedia


    Topics
     
    B
    i
    Link
    H2
    L