Karwinskia humboldtiana

Karwinskia humboldtiana
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Rosales
Family: Rhamnaceae
Genus: Karwinskia
Species: K. humboldtiana
Binomial name
Karwinskia humboldtiana
(Schult.) Zucc.
Synonyms

Rhamnus humboldtiana Schult.[1]

Karwinskia humboldtiana, commonly known as coyotillo or Humboldt coyotillo, is a species of flowering shrub or small tree in the buckthorn 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]

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References

  1. 1 2 "Karwinskia humboldtiana (Schult.) Zucc.". Germplasm Resources Information Network. United States Department of Agriculture. 2007-08-30. Retrieved 2009-12-02.
  2. ↑ "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.
  3. ↑ 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
  4. ↑ 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
  5. ↑ "Coyotillo". Texas AgriLife Research and Extension at Uvalde. Texas A&M University System. 2000. Retrieved 2009-09-23.
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