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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.
The beetle is most effective when used in conjunction with the cinnabar moth (Tyria jacobaeae), another ragwort biocontrol agent. The beetle is not known to attack other plants. A close relative, Longitarsus ganglbaueri, which also feeds on ragwort, does attack other plant species; it is not used as a biocontrol agent for this reason.
Packera macounii is a species of flowering plant in the aster family known by the common name Siskiyou Mountains ragwort. It is native to the west coast of North America from British Columbia to far northern California , where it grows in chaparral and mountain forests, often on serpentine soils .
Packera breweri is a species of flowering plant in the aster family, Asteraceae. [1] [2] It is known by the common name Brewer's ragwort.It is endemic to central California, where it occurs in the woodlands and grasslands of the Central Coast Ranges.
Senecio flaccidus, formerly recorded as Senecio douglasii (in honor of the botanist David Douglas), member of the daisy family and genus Senecio also known as threadleaf ragwort [3] (and threadleaf groundsel, bush senecio, creek senecio, shrubby butterweed, comb butterweed, smooth threadleaf ragwort, Mono ragwort, Douglas ragwort, Douglas groundsel, sand wash groundsel, felty groundsel, old ...
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 .
Senecio ampullaceus — Texas ragwort, Texas squaw-weed, Texas groundsel, clasping-leaf groundsel [10] ... Senecio leucanthemifolius Poir. — coastal ragwort;