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Oxytropis sericea is a species of flowering plant in the legume family known by the common names white locoweed, white point-vetch, whitepoint crazyweed, and silky crazyweed. It is native to western North America from Yukon and British Columbia south through the Pacific Northwest , the Rocky Mountains , and the Great Plains .
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 ...
The Oxytropis lambertii plant is one of the locoweeds most frequently implicated in livestock poisoning. [8] The toxin is called swainsonine.Research suggests that the plant itself may not be toxic, but becomes toxic when inhabited by endophytic fungi of the genus Embellisia, which produce swainsonine.
Suspected mushroom poisoning in Australia has made headlines around the world
This plant may look like wildflowers, but it can cause painful rash and blistering. A video of an Iowa resident with the rash explains why.
Oxytropis splendens, commonly known as showy locoweed, is a flowering perennial in the legume family endemic to the east slope of the Rocky Mountains. [3] Growing in Canada, Alaska, several Great Plains states, and parts of the Mountain West, O. splendens grows well in harsh alpine ecosystems, allowing it to quickly colonize gravel and coal spoils.
Some astragalus species can be toxic, such as those found in the United States containing the neurotoxin swainsonine, which causes "locoweed" poisoning in animals. [11] Some astragalus species may contain high levels of selenium , possibly causing toxicity.
The deadly symptoms are caused by disruption by the atropine of the parasympathetic nervous system's ability to regulate involuntary activities, such as sweating, breathing, and heart rate. The antidote for belladonna poisoning is an anticholinesterase (such as physostigmine ) or a cholinomimetic (such as pilocarpine ), the same as for atropine.