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Rheum rhabarbarum was first described by Carl Linnaeus in 1753. [3] Linnaeus also described R. undulatum, but this is now considered to be the same species. [1]The name rha barbarum, Latin for 'foreign rha', was first used in the writings of Celsus, who uses the word to describe a valued medicinal root imported from the east.
Arctium minus, commonly known as lesser burdock, [2] little burdock, louse-bur, common burdock, [3] button-bur, cuckoo-button, [3] or wild rhubarb, [4] is a biennial plant. This plant is native to Europe , [ 5 ] but has become introduced elsewhere such as Australia , North and South America , and other places.
Ipomoea pandurata, known as man of the earth, [1] wild potato vine, manroot, wild sweet potato, and wild rhubarb, [2] is a species of herbaceous perennial vine native to North America. It is a twining plant of woodland verges and rough places with heart-shaped leaves and funnel-shaped white flowers with a pinkish throat.
The genus includes the vegetable [3] rhubarb. The species have large somewhat triangular shaped leaves with long, fleshy petioles. The flowers are small, greenish-white to rose-red, and grouped in large compound leafy inflorescences. Many rhubarb cultivars have been domesticated as medicinal plants and for human consumption.
Habitus Rheum webbianum is a perennial herbaceous plant [5] which grows from 0.3–2 metres (1 ft 0 in – 6 ft 7 in) in height. [1] [3] It has a stout, hollow stem bearing the inflorescence, this is finely sulcate (with many fine fissures in profile) and glabrous (hairless) or covered in papilla (papilliferous) on the surface of its upper part.
The giant rhubarb, or Campos des Loges (Gunnera manicata), native to the Serra do Mar mountains of southeastern Brazil, is perhaps the largest species, with reniform or sub-reniform leaves typically 1.5 to 2.0 meters (4 ft 11 in to 6 ft 7 in) long, not including the thick, succulent petiole which may be up to 2.5 meters (8 feet 2 inches) in length.
Thalictrum flavum, known by the common names common meadow-rue, [2] [3] poor man's rhubarb, [4] and yellow meadow-rue, [5] is a flowering plant species in the family Ranunculaceae. It is a native to Caucasus and Russia ( Siberia ).
Rhubarb is the fleshy, edible stalks of species and hybrids (culinary rhubarb) of Rheum in the family Polygonaceae, which are cooked and used for food. [2] The plant is a herbaceous perennial that grows from short, thick rhizomes .