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Any plant of the genus Rheum (family Polygonaceae), especially R. rhaponticum, garden rhubarb, and R. officinale or R. palmatum; the last two species or their hybrids, deprived of periderm tissues, dried, and powdered, are used for their astringent, tonic and laxative effects.


1. Any of several plants of the genus Rheum, especially R. rhabarbarum, having long edible green or reddish leafstalks that are usually cooked and sweetened. Also called pie plant.
2. A preparation made from the dried rhizomes and roots of any of several plants of the genus Rheum, especially R. palmatum or R. officinale of East Asia, used as a laxative.


n Latin name:
Rheum palmatum; parts used: roots, root bark; uses: laxative, constipation; precautions: patients with appendicitis, intestinal obstruction, intestinal inflammatory conditions; heart or kidney conditions; patients taking laxatives or heart medications; avoid long-term use. Also called
China rhubarb, Indian rhubarb, Russian rhubarb, or
Turkey rhubarb.


References in periodicals archive ?
There's a bit of wild rhubarb growing on the boundary of my land," said Mulranny-based councillor Michael Holmes.
Simply poached and neatly arranged around a wobbly pannacotta, as a fool, in crumbles, as a sorbet or just plain good old rhubarb and custard.
The late Bob, our gardener for many years, was always appalled that I would never use the rhubarb that grew at the bottom of the garden in the early summer, which was coarse and bitter - I did once use it and the fool looked more like a brown Windsor soup than a dessert.
Forced rhubarb is traditionally grown within the Yorkshire Rhubarb triangle, but these days it has been difficult to get hold of.
This blackout procedure gives the spooky rhubarb its pink glow, early tenderness and intense flavour, while also rendering its triffid-like crinkly leaves a sickly yellow.