perisperm

British  

/ ˈpɛrɪˌspɜːm /

noun

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

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Other Word Forms

• perispermal adjective

Example Sentences

The covering of the seed is marked i. n is the nucellus or perisperm, enclosing the embryo-sac es, in which the endosperm is formed.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" by Various

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

From Scientific American Supplement, No. 613, October 1, 1887 by Various

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.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 by Humboldt, Alexander von

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

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" by Various

Seeds in which endosperm or perisperm or both exist are commonly called albuminous or endospermic, those in which neither is found are termed exalbuminous or exendospermic.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 by Various