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Gunnera tinctoria, known as giant rhubarb, [2] Chilean rhubarb, or nalca, is a flowering plant species native to southern Chile and neighboring zones in Argentina. It is unrelated to rhubarb , as the two plants belong to different orders , but looks similar from a distance and has similar culinary uses.
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.
Rheum rhabarbarum is a species of flowering plant in the family Polygonaceae, native to a region stretching from southern Siberia to north and central China. [1] It has been harvested from the wild for centuries for its root, which was harvested for use as a popular medicine in Europe and Asia.
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.
Darmera peltata, the Indian rhubarb or umbrella plant, is a flowering plant, the only species within the genus Darmera in the family Saxifragaceae. [2] It is a slowly spreading rhizomatous perennial native to mountain streamsides in woodland in the western United States (western Oregon to northwestern California), growing to 2 m (6 ft 7 in) tall by 1 m (3 ft 3 in) wide.
Gunnera manicata is a large, clump-forming herbaceous perennial growing to 2.5 m (8 ft) tall by 4 m (13 ft) or more. The leaves of G. manicata grow to an impressive size. . Leaves with diameters well in excess of 120 cm (4 ft) are commonplace, with a spread of 3 m × 3 m (10 ft × 10 ft) on a mature plant.The largest on record had leaves up to eleven feet (3.3 meters) in width.
The Plant List (which was last updated in 2013) classified H. maximum, H. lanatum, and H. sphondylium subsp. montanum as distinct species. [13] [14] [15] According to both the Integrated Taxonomic Information System (ITIS) or the National Plant Germplasm System (NPGS), H. lanatum and H. maximum are synonyms for H. sphondylium subsp. montanum, [16] [17] a name proposed by Brummitt in 1971.
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.