perigonium definition

  • noun:
    • The sterile parts of a flower; collectively, the sepals and petals (or tepals); the perianth.
    • The modified leaves across the antheridia in a bryophytic plant.
    • The wall surface for the sporosac in a hydroid.
    • Same as perigone.
    • In Hydroida, a sac formed because of the more outside elements of the gonophore.
    • In botany, same as perigone.
    • collective term the exterior components of a flower comprising the calyx and corolla and enclosing the stamens and pistils

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