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Toxic effects include vomiting, seizures, and an irregular heartbeat, and death can occur in as little as a few hours. This poison is known as "the poison that keeps on killing" because the toxin stays in the body after the animal dies, so if a predator eats the animal, the predator gets poisoned, and so on up the food chain.
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.
The plant is toxic enough to cause human and animal fatalities if ingested. Every part of the plant is poisonous, especially the tuberous rhizomes. As with other members of the Colchicaceae, this plant contains high levels of colchicine, a toxic alkaloid. It also contains the alkaloid gloriocine.
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Pokeweed. This fast-growing plant, with large green leaves and dark berries in the fall, is poisonous and has been known to kill livestock that eat pokeweed growing in pastures. How to avoid toxic ...
Delphinium geyeri is a poisonous plant, though the toxicity of the plant is variable from year to year. It also varies in toxicity during the year with the plant's being most toxic before it flowers. [6] This has been known since at least 1916. [29] The primary toxic agents are browniine, 14-acetylbrowniine, geyerine, and 14-dehydrobrowniine.
Poison hemlock is a "highly toxic biennial," according to the National Parks Service, which means it's a flowering plant that has a two-year life cycle and can be deadly for humans and animals if ...
The lethal dose of green plant material is between 0.6% and 6.0% of an animal's body weight. [35] In experiments with sheep it was among the most poisonous of members of its genus with just 0.4% of green material by body weight causing symptoms, close to the 0.2% of Toxicoscordion nuttallii.