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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 .
Flowering plant with cinnabar moth caterpillars. Ragwort is a food plant for the larvae of Cochylis atricapitana, Phycitodes maritima, and Phycitodes saxicolais. Ragwort is best known as the food of caterpillars of the cinnabar moth Tyria jacobaeae. They absorb alkaloids from the plant and become distasteful to predators, a fact advertised by ...
Radical weed – Solanum carolinense; Ragweed – Ambrosia. Common ragweed – Ambrosia artemisiifolia; Giant ragweed – Ambrosia trifida; Great ragweed – Ambrosia trifida; Ragwort – Senecio. Common ragwort – Senecio jacobaea; Hoary ragwort – Senecio erucifolius; Marsh ragwort – Senecio aquaticus; Oxford ragwort – Senecio squalidus
Ragwort may refer to a number of plant species: Certain members of the genus Senecio (ragworts and groundsels) including: 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):
Senecio / s ɪ ˈ n iː ʃ i. oʊ / [2] is a genus of flowering plants in the daisy family that includes ragworts and groundsels. Variously circumscribed taxonomically, the genus Senecio is one of the largest genera of flowering plants.
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.
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The approximately 22 millimetres (0.87 in) long [56] pappus seeds of Senecio vulgaris, each plant capable of producing 25,000 or more seeds (1,700 seeds per plant are more likely) with three generations of the plant per year; [34] seeds that are widely dispersed by the wind, [57] have been identified as a contaminant of cereal and vegetable ...