extrorse

American  

[ek-strawrs, ek-strawrs] / ɛkˈstrɔrs, ˈɛk strɔrs /

adjective

Botany.

1. turned or facing outward, as anthers that open toward the perianth.

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extrorse British  

/ ɛkˈstrɔːs /

adjective

1. botany turned or opening outwards or away from the axis

   extrorse anthers

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extrorse Scientific  

/ ĕk′strôrs′ /

1. Facing outward, away from the central axis around which a flower is arranged. Used of anthers and the direction in which they open to release pollen.

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Other Word Forms

• extrorsely adverb

Etymology

Origin of extrorse

1855–60; < Late Latin extrorsus in outward direction, equivalent to extr ( a )- extra- + ( v ) orsus (adv.) turned

Example Sentences

Stamens 6–12, more or less united with the style; anthers adnate, extrorse.—Leaves petioled, mostly heart-shaped and entire.

From Project Gutenberg

Calyx-tube inflated bell-shaped, somewhat contracted at the throat, its base adnate to the lower half of the ovary; limb 3-cleft, short; anthers sessile or nearly so, oblong-linear; styles 6, fleshy, diverging, 2-cleft, bearing a thick extrorse stigma below the cleft; leaves thickish, persistent, usually only one each year, often whitish-mottled; peduncle very short; rootstocks clustered, ascending.

From Project Gutenberg

Stamens 3, opposite the outer lobes of the corolla-like perianth; anthers extrorse.

From Project Gutenberg

Shrubs with opposite entire leaves, no stipules, the sepals and petals similar and indefinite, the anthers adnate and extrorse, and the cotyledons convolute; the fruit like a rose-hip.

From Project Gutenberg

Anthers erect in the bud, extrorse.

From Project Gutenberg