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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 ?
The pie plant will produce several varieties of pies, including a full line of fruit, custard and dessert pies.