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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.
Senecio squalidus, known as Oxford ragwort, [6] is a flowering plant in the daisy family Asteraceae. It is a yellow-flowered herbaceous plant, native to mountainous, rocky or volcanic areas, that has managed to find other homes on man-made and natural piles of rocks, war-ruined neighborhoods and dry-stone walls .
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.
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; Jacobaea aquatica, water ragwort, marsh ragwort; Jacobaea erucifolia, Hoary ...
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.
A single plant produces 26 to 500 capitula each year, with approximately 90 florets, 74% of them developing a viable achene. [6] The leaves are linear, entire or almost so and without petioles. S. inaequidens exists as a diploid genotype and a tetraploid cytotype.
Senecio spartioides is a species of flowering plant in the aster family known by the common name broom-like ragwort. [1] It is native to the western United States as far east as the Dakotas, Texas, and northern Mexico. It can be found in dry, rocky, often disturbed areas in various habitat types.
Packera anonyma, called Appalachian ragwort and Small's ragwort, is a flowering plant in the Asteraceae (aster family). [1] [2] [3] Distribution and habitat.