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The plant is a herbaceous perennial that grows into a small bush, [2] up to 70 cm (28 in) high, with pungently-scented leaves. The leaves are light yellowish green, variously pinnatifid . The conspicuous daisy-like flowers are up to 20 millimetres ( 3 ⁄ 4 in) across, borne in lax corymbs .
This plant grows in disturbed areas [2] as well as prairies, meadows, woodland edges, and hillsides. It does best in full sun, but does well enough in part shade. It grows in most any well-drained soil from sandy loam to good quality clay. It tolerates hot and cold climates and can be used as a garden plant in many areas. [7]
Parthenium is a genus of North American annuals, biennials, perennials, subshrubs, and shrubs in the tribe Heliantheae within the family Asteraceae and subfamily Asteroideae. [4] [2] [3] [5] The name Parthenium is an evolution of the Ancient Greek name παρθένιον (parthenion), which referred to Tanacetum parthenium.
Parthenium hysterophorus is a species of flowering plant in the family Asteraceae. It is native to the American tropics. [1] Common names include Santa-Maria, [2] Santa Maria feverfew, [3] whitetop weed, [4] and famine weed. [5] In India, it is locally known as carrot grass, congress grass [6] or gajar ghas or dhanura. [7]
Parthenium alpinum is a species of flowering plant in the aster family known by the common names alpine feverfew and Wyoming feverfew. It is native to Wyoming, Colorado, and New Mexico in the United States. [1] This is a small, mat-forming, long-lived perennial herb with gray-green, hairy leaves and solitary flower heads.
Tanacetum is a genus of about 160 species of flowering plants in the aster family, Asteraceae, native to many regions of the Northern Hemisphere. [5] They are known commonly as tansies . [ 4 ] [ 5 ] [ 6 ] The name tansy can refer specifically to Tanacetum vulgare , which may be called the common tansy or garden tansy for clarity. [ 6 ]
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