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Loosely branched clusters of matured red flowers found on the lobed-leafed Chinese rhubarb. Habit of Rheum palmatum. Its lobed leaves are large, jagged and hand-shaped, growing in width to two feet, but sometimes up to a full meter (3ft 3in) in width and length). The tiny pink flowers are in panicles up to five feet (1.5 meters) in height. [6]
Rhubarb isn’t the only vegetable with toxic leaves. In fact, the potatoes we see at the grocery store are edible, but every other part of the plant is toxic. So if your spuds start growing lots ...
The drug rheum is prepared from the rhizomes and roots of another species, R. officinale or medicinal rhubarb. This species is also native to Asia, as is the turkey rhubarb, R. palmatum. Another species, the Sikkim rhubarb, R. nobile, is limited to the Himalayas. The centre of diversity for this genus is found in Central Asia. [18]
It is commonly known as Himalayan rhubarb, [2] [3] Indian rhubarb [2] and Red-veined pie plant. [2] It is a medicinal herb used in the Indian Unani system of medicine, and formerly in the European system of medicine where it was traded as Indian rhubarb. [4] The plant is found in the sub-alpine and alpine Himalayas at an altitude of 4000 m. [5]
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The flowers are prickly and pink to purple in color. The flower heads are about 2 cm ( 3 ⁄ 4 in) wide, surrounded by a cluster of bracts . [ 5 ] [ 6 ] The outer bracts end in hooks causing a hook-and-loop effect after the flower head dries, when the bracts will attach to humans and animals to transport the seedhead.
Rhubarb is a vegetable and is often put to the same culinary uses as fruits. [5] The leaf stalks can be used raw while they have a crisp texture, but are most commonly cooked with sugar and used in pies, crumbles, and other desserts. They have a strong, tart taste.