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The Plant List (which was last updated in 2013) classified H. maximum, H. lanatum, and H. sphondylium subsp. montanum as distinct species. [13] [14] [15] According to both the Integrated Taxonomic Information System (ITIS) or the National Plant Germplasm System (NPGS), H. lanatum and H. maximum are synonyms for H. sphondylium subsp. montanum, [16] [17] a name proposed by Brummitt in 1971.
All parts of these plants are toxic, due to the presence of alkaloids. Grazing animals, such as sheep and cattle, may be affected and human fatalities have occurred. [106] Delphinium spp. larkspur Ranunculaceae: Contains the alkaloid delsoline. Young plants and seeds are poisonous, causing nausea, muscle twitches, paralysis, and often death.
Locoweed (also crazyweed and loco) is a common name in North America for any plant that produces swainsonine, an alkaloid harmful to livestock.Worldwide, swainsonine is produced by a small number of species, most of them in three genera of the flowering plant family Fabaceae: Oxytropis and Astragalus in North America, [1] and Swainsona in Australia.
Several plants, including nightshade, become more toxic as they wilt and die, posing a danger to horses eating dried hay or plant matter blown into their pastures. [ 3 ] The risk of animals becoming ill during the fall is increased, as many plants slow their growth in preparation for winter, and equines begin to browse on the remaining plants.
Goatsrue, a federally listed noxious weed and toxic to humans and animals if ingested, has been identified in Whatcom County. Standing 4 feet to 6 feet tall with white or purple pea-like flowers ...
Echium plantagineum, commonly known as purple viper's-bugloss [1], Paterson's curse or Salvation Jane, is a species of the genus Echium native to western and southern Europe (from southern England south to Iberia and east to the Crimea), northern Africa, and southwestern Asia (east to Georgia).
Weed killers or herbicides are made with chemicals that can be harmful to people, wildlife, and the environment. There are several factors to consider before you start applying herbicides ...
A noxious weed, harmful weed or injurious weed is a weed that has been designated by an agricultural or other governing authority as a plant that is harmful to agricultural or horticultural crops, natural habitats or ecosystems, or humans or livestock. Most noxious weeds have been introduced into an ecosystem by ignorance, mismanagement, or ...