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Ochrea

From Wikipedia, the free encyclopedia

Ochrea
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An ochrea (Latin ocrea, greave or protective legging), also spelled ocrea, is a plant structure formed of stipules fused into a sheath surrounding the stem, and is typically found in the Polygonaceae.

Thumb
Ochrea on a redshank stem

In palms it denotes an extension of the leaf sheath beyond the petiole insertion.

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