Botanical name: Rheum tibeticum    Family: Polygonaceae (Knotweed family)

Tibetan Rhubarb is a perennial stemless herb with leaves all basal, stalked, 10-20 cm long. Leaves are very leathery, round, heart-shaped, blunt, entire or rounded-toothed, 5-nerved, nerves thick, 10-35 x 11-30 cm, hairless above or sparsely papillose, papillose below. Flowering stems are 1-5, hairless or laxly papillose, up to 1 m tall. Inflorescence is a stalked leafless panicle. Flowers are bracteate, flower-stalk 2-3.5 mm long, 2-2.5 mm across. Tepals are 6, light purple-red to yellowish green, elliptic, 2-2.5 mm long. Fruit is 8-10 mm across, almost round wings broad, brownish red, notched at both ends. Tibetan Rhubarb is found on drier slopes, between 2500-4000 m, in Afghanistan, Western Himalaya to Tibet. Flowering: July-August.

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The flower labeled Tibetan Rhubarb is ...