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Parthenium integrifolium is a species of flowering plant in the family Asteraceae known by the common names wild quinine, American feverfew, and eastern feverfew. It is native to the eastern and midwestern United States.
Feverfew is native to Eurasia, specifically the Balkan Peninsula, Anatolia, and the Caucasus, but cultivation has spread it around the world and the rest of Europe, North America, and Chile. [2] [6] A perennial herb, it should be planted in full sun, 38 to 46 cm (15–18 in) apart, and cut back to the ground in the autumn.
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 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.
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] It is a common invasive species [8] in India, [9] Australia, and parts of Africa. [5] Pollen grains of Parthenium hysterophorus
Other familiar species include costmary (T. balsamita) and feverfew (T. parthenium). Tansies are mainly perennial herbs, but some are annuals and subshrubs. Some are a few centimeters tall and some reach 1.5 metres (4 ft 11 in). They vary in form, with one or more branching stems growing erect or prostrate, usually from rhizomes. They are hairy ...
Tansy (Tanacetum vulgare) is a perennial, herbaceous flowering plant in the genus Tanacetum in the aster family, native to temperate Europe and Asia. It has been introduced to other parts of the world, including North America, and in some areas has become invasive .
The table below shows the species of the genus Helleborus, give its common name, the area of distribution, an image if available and the meaning of the scientific name. [ 13 ] [ 14 ] [ 15 ] The cladogram shows the relationship between the different species determined with microbiological methods by Meiners et al. (2011).