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Common names include ragwort, common ragwort, [4] stinking willie, [5] tansy ragwort, benweed, St. James-wort, stinking nanny/ninny/willy, staggerwort, dog standard, cankerwort, stammerwort. In the western United States it is generally known as tansy ragwort , or tansy , though its resemblance to the true tansy is superficial.
Packera aurea (formerly Senecio aureus), commonly known as golden ragwort or simply ragwort, is a perennial flower in the family Asteraceae.. It is also known as golden groundsel, squaw weed, life root, golden Senecio, uncum, uncum root, waw weed, false valerian, cough weed, female regulator, cocash weed, ragweed, staggerwort, and St. James wort.
Longitarsus jacobaeae is a species of flea beetle known as the tansy ragwort flea beetle. It is used as an agent of biological pest control against the nectar-rich noxious weed known as ragwort ( Senecio jacobaea reclassified as Jacobaea vulgaris ).
The seedlings of S. ampullaceus often have a purplish color on the undersides of their leaves in the winter, especially along their midrib. [3] Flowering in early–mid spring, [7] Texas ragwort is a tall annual, [8] growing to from 20 centimeters (7.9 in) to 80 centimeters (31 in) tall and similar to S. quaylei.
The Ragwort Control Act 2003 (c 40) is an Act of the Parliament of the United Kingdom. It creates guidance as a Code of Practice on Ragwort Control, [ 5 ] but does not force control, create a responsibility to control or make growing the plant a criminal offence.
Packera obovata, commonly known as roundleaf ragwort, [1] spoon-leaved ragwort, [2] or roundleaf groundsel [3] is an erect perennial herb in the Asteraceae (aster) family native to eastern North America. It was previously called Senecio obovatus. Basal and lower leaves are obovate with toothed margins, while upper leaves are pinnately divided.
It is variously known as the woodland ragwort, [1] heath groundsel, [2] or mountain common groundsel. [3] It is native to Eurasia , and it can be found in other places, including western and eastern sections of North America, as an introduced species and an occasional roadside weed.
Senecio glastifolius is a species of flowering plant in the aster family known by the common names woad-leaved ragwort, [2] holly-leaved senecio, and pink ragwort. A tall perennial herb, it is endemic to the Cape Provinces of South Africa , [ 1 ] and it is cultivated as an ornamental plant for its colorful flowers.