Rheum rhaponticum

Rheum rhaponticum, the false rhubarb, rhapontic rhubarb or rhapontic, is a plant species found in the wild in the genus Rheum.

Hyperoside, the 3-O-galactoside of quercetin, can be found in R. rhaponticum, where it serves as a UV blocker found in the bracts. It also contains the hydroxystilbenes rhaponticin and desoxyrhaponticin.