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locoweed
noun
Any of several plants indigenous to the western United States, of genus Oxytropis or Astragalus.
synonyms
Exact(7)
Many locoweed species are low-growing plants, up to 45 cm (1.5 feet) high.
The largest genus of legumes, Astragalus (2,400 to 3,300 species, known as locoweed), is mainly western North American but also occurs in Eurasia, India, Africa, and South America.
Species of Astragalus are commonly referred to as locoweed in North America because, following excessive consumption of these plants, cattle seem to become unmanageable and "go crazy" or "loco".
A few are especially dangerous: woolly locoweed (Astragalus mollissimus), with woolly leaves and violet flowers; halfmoon milkvetch (A. wootonii), with whitish flowers; crazyweed, or purple loco (Oxytropis lambertii), with pink to purplish flowers; and the showy oxytropis (O. splendens), bearing silvery hairs and rich lavender-pink flowers.
Also called the devil's trumpet and sometimes locoweed, this plant has been known for centuries to cause a temporary kind of madness, the woman explained.
Instead we came across one dazzling purple-hued milkvetch, also known as locoweed.
Locoweed, any of several species of poisonous plants of the genera Astragalus and Oxytropis, in the pea family (Fabaceae).
Similar(3)
The level of toxicity appears to depend on soil conditions; decaying locoweeds release toxins sometimes taken up by otherwise harmless forage crops.
If ingested, the plants' toxins produce frenzied behaviour, impaired vision, and sometimes death, though most locoweeds are unpalatable to livestock and are eaten only when other forage is unavailable.
Locoweeds are native to the prairies of north central and western North America and can pose a danger to livestock, horses, and other grazing animals.
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