WebUniversity of Minnesota Herbarium: Vascular plant collection. 2000. CalFlora: Information on California plants for education, research and conservation. The CalFlora Database, Berkeley. Abrams, L. 1960. An illustrated flora of the Pacific States. Stanford University Press, Stanford. Anonymous. WebSmall's ragwort. Small's ragwort General Information; Symbol: PAAN6: Group: Dicot: ... Scientific Name; Packera anonyma (Alph. Wood) W.A. Weber & Á. ... Small's ragwort. Endangered, Threatened, and Rarity Information; This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place ...
USDA Plants Database
WebMadagascar ragwort. Noxious Weed Information; This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds. WebSenecio triangularis Senecio triangularis Hook. Arrowleaf Ragwort, Arrowleaf Groundsel Asteraceae (Aster Family) Synonym(s): Senecio gibbsonsii, Senecio triangularis var. angustifolius USDA Symbol: setr USDA Native Status: L48, AK , CAN Broadly or narrowly triangular or arrowhead-shaped leaves, with many sharp teeth on edges, grow on several … project nexus 2 free download
USDA Plants Database
WebRagworts (Groundsels) Scientific Name Packera spp. (formerly Senecio spp.) Family Asteraceae (daisies, sunflowers, asters) Description Ragworts or groundsels have several common names, and separating the different species can be a little tricky. But members of genus Packera, with their bright yellow daisy-like flowers, are distinctive as a group. 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 the black and yellow … See more Jacobaea vulgaris, syn. Senecio jacobaea, is a very common wild flower in the family Asteraceae that is native to northern Eurasia, usually in dry, open places, and has also been widely distributed as a weed elsewhere. See more Two subspecies are accepted: • Jacobaea vulgaris ssp. vulgaris - the typical plant, with ray florets present. • Jacobaea vulgaris ssp. dunensis - the ray florets are missing. See more Although the plant is often unwanted by landowners because of its toxic effect for cattle and horses, and because it is considered a See more As indicated above, common ragwort has become a problem in several areas in which it has been introduced, and various methods are employed to help prevent its spread. In many Australian states ragwort has been declared a See more The plant is generally considered to be biennial but it has the tendency to exhibit perennial properties under certain cultural conditions (such as when subjected to repeated grazing or mowing). The stems are erect, straight, have no or few hairs, and reach a height … See more Ragwort is native to the Eurasian continent. In Europe it is widely spread, from Scandinavia to the Mediterranean. In Britain and Ireland, where it is native, it is listed as a noxious weed. Ragwort is abundant in waste land, waysides and … See more Ragwort contains many different alkaloids, making it poisonous to certain animals. (EHC 80,section 9.1.4). Alkaloids which have been found in the plant confirmed by the WHO report EHC 80 are -- jacobine, jaconine, jacozine, otosenine, retrorsine, seneciphylline, See more project nexus hacked ruffle