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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]
The genus is represented by about 50–60 extant species. [1] [17] The many cultivars of culinary rhubarb more usually grown for eating are recognised as Rheum × hybridum in the Royal Horticultural Society's list of recognised plant names. The drug rheum is prepared from the rhizomes and roots of another species, R. officinale or
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. [9]
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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]
Rhubarb and Ohio weather - a perfect fit. The plants can be grown in a raised garden bed or an area that is removed from other plants. Rhubarb and Ohio weather - a perfect fit. The plants can be ...
Rhubarb damaged by severe cold should not be eaten, as it may be high in oxalic acid, which migrates from the leaves and can cause illness. [17] The colour of rhubarb stalks can vary from the commonly associated crimson red, through speckled light pink, to simply light green. Rhubarb stalks are poetically described as "crimson stalks".
Dense clusters of small, orange-red, flowers are held above the leaves on long slim peduncles. The clusters carry both male and female flowers and flowering continues for most of the year. [4] [5] [8] Fruit are green capsules at first, becoming blackish-brown at maturity when they burst and scatter the seeds up to 4 metres (13 feet) away. [5] [6]