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Bistorta officinalis. Bistorta officinalis (synonym Persicaria bistorta), known as bistort, common bistort, European bistort, or meadow bistort, is a species of flowering plant in the dock family Polygonaceae native to Europe and northern and western Asia. [1] Other common names include snakeroot, snake-root, snakeweed, and Easter-ledges.
Bistorta bistortoides plants generally grow to 10–51 centimetres (4–20 inches) tall. [2] Individuals growing above 2,250 metres (7,380 feet) are smaller, seldom reaching more than 30 cm (12 in) in height. The leaves are leathery and 2.5–10 cm (1–4 in) long, [2] being mostly basal on the stem.
Persicaria is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds [ 2 ] : 436 or smartweeds . [ 3 ] It has a cosmopolitan distribution , with species occurring nearly worldwide.
Persicaria amphibia produces a thick stem from its rhizome. The stem may creep, float, or grow erect, rooting at stem nodes that come in contact with moist substrate. Stems are known to reach 3 meters (10 feet) long in aquatic individuals. The stems are ribbed and may be hairless to quite hairy in texture. [4]
Bistorta vacciniifolia, the whortleberry-leaved knotweed, is a species of flowering plant in the family Polygonaceae, native to Tibet and the Himalaya. [1] Well-suited for clay soils, as its synonym Persicaria vacciniifolia it has gained the Royal Horticultural Society 's Award of Garden Merit .
Bistorta amplexicaulis (synonym Persicaria amplexicaulis), the red bistort [2] or mountain fleece, is a species of flowering plant in the buckwheat family Polygonaceae, native to China, the Himalayas, and Pakistan.
Bistorta macrophylla (syn. Polygonum macrophyllum, syn. Persicaria macrophylla) is a flowering plant species in the buckwheat family Polygonaceae. [1] It is native to mountain regions of West and South China (Gansu, Guizhou, Henan, Hubei, Qinghai, Shaanxi, Sichuan, Tibet, Yunnan), Bhutan, Nepal, [2] northern India (Himachal Pradesh, Uttarakhand), and Pakistan.
The seeds of two species of Fagopyrum, known as buckwheat, are eaten in the form of groats or used to make flour. The petioles of rhubarb ( Rheum rhabarbarum and hybrids) are a food item. The leaves of the common sorrel ( Rumex acetosa ) are eaten in salads or as a leaf vegetable .