perisperm definition

  • noun:
    • Botany The nutritive tissue this is certainly derived from the nucleus and surrounds the embryo associated with the seed.
    • The layer of nutritive structure, produced from the nucellus, that surrounds the embryo of a seed in certain angiosperms.
    • The albumen of a seed, specifically that portion which can be created outside of the embryo sac.
    • In bot., a name initially suggested by Jussieu for the albumen or nutritive matter saved up when you look at the seeds of flowers; by later on writers limited to the albumen which can be stored up away from embryo-sac. Compare endosperm.
    • The pericarp and on occasion even the integuments of a seed.
    • the nutritive structure outside of the sac containing the embryo in certain seeds

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