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[2] as well as much of Mexico.[1] The seeds and leaves of this plant contain the quinones eleutherin and 7-methoxyeleutherin[3] and chrysophanol and β-amyrin in the fruits[4] that are toxic to humans and livestock.[5] The toxins typically induce paralysis, which is often followed by death. However, it often takes days or even weeks after consumption for the symptoms to manifest.[6]
| Karwinskia humboldtiana | |
|---|---|
| |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rhamnaceae |
| Genus: | Karwinskia |
| Species: | K. humboldtiana
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| Binomial name | |
| Karwinskia humboldtiana | |
| Synonyms | |
References
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Wikimedia Commons has media related to Karwinskia humboldtiana.
Wikimedia Commons has media related to Karwinskia humboldtiana.
- ^ a b "Karwinskia humboldtiana". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 2009-12-02.
- ^ "Coyotillo, Humboldt Coyotillo, Tullidora, Capulincillo, Capulincillo Cimmaron, Capulin, Palo Negrito, Margarita, Cacachila, China, Frutillo Negrito, Cochila, Margarita del Cero (Karwinskia humboldtiana)". Texas Native Shrubs. Texas A&M University. Retrieved 2009-09-23.
- ^ Antimicrobial agents from higher plants: two dimethylbenzisochromans from Karwinskia humboldtiana. Lester A. Mitscher, Sitaraghav R. Gollapudi, David S. Oburn and Steven Drake, Phytochemistry, Volume 24, Issue 8, 1985, Pages 1681-1683, doi:10.1016/S0031-9422(00)82534-0
- ^ Chrysophanol and β-amyrin in the fruits of Karwinskia humboldtiana. Xorge Alejandro Domínguez and Leticia Garza, Phytochemistry, Volume 11, Issue 3, March 1972, Page 1186, doi:10.1016/S0031-9422(00)88492-7
- ^ "Coyotillo". Texas AgriLife Research and Extension at Uvalde. Texas A&M University System. 2000. Archived from the original on 2010-11-26. Retrieved 2009-09-23.
- ^ Stewart, Amy (2009). Wicked Plants. New York: Algonquin Books of Chapel Hill. p. 25. ISBN 9781565126831.
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