introrse

[ in-trawrs ]

Phonetic (Standard)IPA

adjective

, Botany.

introrse

/ ɪnˈtrɔːs /

botany turned inwards or towards the axis, as anthers that shed their pollen towards the centre of the flower

introrse

/ ĭn′trôrs′ /

Facing inwards toward the axis around which a flower is arranged. Used of anthers and the direction in which they open to release pollen.

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1835–45; < Latin introrsus, contraction of *intrōversus toward the inside. See intro-, versus

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C19: from Latin introrsus, contraction of intrōversus, from intro- + versus turned, from vertere to turn

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Proper stamens 5, alternate with the petals, persistent; anthers introrse or subextrorse.

Stamens 6, inserted at the base of the divisions; filaments slender, anthers short, introrse.

Stamens 6; anthers linear, on short filaments, adnate, usually introrse; the cells opening down the margins.

Filaments awl-shaped; anthers short, innate or somewhat introrse, 2-celled.

Sometimes, from their versatile nature, anthers originally introrse become extrorse, as in the Passion-flower and Oxalis.

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