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Senecio ampullaceus, Texas ragwort; Senecio cambrensis, Welsh ragwort; Senecio squalidus, Oxford ragwort; Senecio viscosus, sticky ragwort; Certain members of the genus Jacobaea (a segregate of Senecio): Jacobaea vulgaris, (common) ragwort or, only in the USA tansy ragwort, a very common wild flower in Europe, widely naturalised elsewhere
St. James' Wort - Senecio jacobaea or Senecio aureus, two species of ragwort. St. John's Wort - Can refer to any species of Hypericum. Stonewort - A general name for plants of the genus Chara and Nitella; water horsetail. St. Paul's Wort – species of the genus Sigesbeckia, such as Eastern St Paul's-wort, Sigesbeckia orientalis. [4]
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.
Packera is a genus of about 75 species of plants in the daisy family, Asteraceae. [1] Most species are commonly called ragworts or grounsels. Its members were previously included in the genus Senecio (where they were called aureoid senecios by Asa Gray), but were moved to a different genus based on chromosome numbers, a variety of morphological characters, and molecular phylogenetic evidence.
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.
Packera anonyma, called Appalachian ragwort and Small's ragwort, is a flowering plant in the Asteraceae (aster family). [ 1 ] [ 2 ] [ 3 ] Distribution and habitat
The leaves are linear, entire or almost so and without petioles. S. inaequidens exists as a diploid genotype and a tetraploid cytotype. Initially the diploid S. madagascarensis and S. harveianus were assumed to be different species; however molecular analysis showed that they only differ in cytotype .