perisperm

/ ˈpɛrɪˌspɜːm /

noun

1. the nutritive tissue surrounding the embryo in certain seeds, and developing from the nucellus of the ovule

Other Word Forms

• perispermal adjective

Example Sentences

Germination is often slower where there is a store of available food in the perisperm, or in the endosperm, or in the embryo itself, than where this is scanty or wanting.

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When either endosperm or perisperm or both are present the seed is said to be albuminous.

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G, section of an unripe seed. em. embryo. p, perisperm, × 2.

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This perisperm covers an exalbuminous embryo formed almost entirely of two thick, greenish yellow cotyledons having a strong taste of legumine.

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In the monocotyledonous plants there is no milky juice; but the perisperm of the palms, which yields such sweet and agreeable milky emulsions, contains, no doubt, caseum.

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