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Karwinskia humboldtiana
Karwinskia humboldtiana, commonly known as coyotillo, cacachila or Humboldt coyotillo, is a species of flowering shrub or small tree in the family Rhamnaceae. It is native to southern and western Texas in the United States as well as much of Mexico. The seeds and leaves of this plant contain the quinones eleutherin and 7-methoxyeleutherin and chrysophanol and β-amyrin in the fruits that are toxic to humans and livestock.
The toxins typically induce an ascending paralysis, which is often followed by death. However, it often takes days or even weeks after consumption for the symptoms to manifest. Symptoms are similar to those of Guillain-Barré syndrome.
Text excerpted from the Wikipedia article Karwinskia humboldtiana by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
