Equisetum bogotense

Andean horsetail
	Andean horsetail
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Class:	Polypodiopsida
Subclass:	Equisetidae
Order:	Equisetales
Family:	Equisetaceae
Genus:	Equisetum
Subgenus:	E. subg. Equisetum
Species:	E. bogotense
Binomial name
	Equisetum bogotense; Kunth

Equisetum bogotense, the Andean horsetail , is a herbaceous perennial that reproduces through spores. It has thicker less bushy whorled branches, and a silica rich rhizomatous stem, which roots grow out of, under ground. This stem is a dull dark brown color with glabrous growth aside from the sheathed segments. The plant has a history as a traditional herbal remedy, and a study of its diuretic effects on humans showed significant increases in urinary sodium, potassium, and chloride. Human and animal trials of indicate that E. bogotense has "high" efficacy as a diuretic.[1] It is used in several modern herbal supplements.[2] The species epithet refers to Bogotá, the capital of Colombia.

A segregate species, Equisetum rinihuense, has been described.

According to a recent study,[3] this species may be the most isolated of all the genus, being more closely related with fossil Equisetums rather than living ones .

References

Wright, CI; Van-Buren, L; Kroner, CI; Koning, MM (October 2007). "Herbal medicines as diuretics: a review of the scientific evidence". J Ethnopharmacol. 114 (1): 1–31. doi:10.1016/j.jep.2007.07.023. PMID 17804183.
https://www.fda.gov/ohrms/dockets/dailys/00/Jul00/072000/rpt0071.pdf
Elgorriaga, A.; Escapa, I.H.; Rothwell, G.W.; Tomescu, A.M.F.; Cúneo, N.R. (2018). "Origin of Equisetum: Evolution of horsetails (Equisetales) within the major euphyllophyte clade Sphenopsida". American Journal of Botany. 105 (8): 1286–1303. doi:10.1002/ajb2.1125. PMID 30025163.

External links

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[1] Wright, CI; Van-Buren, L; Kroner, CI; Koning, MM (October 2007). "Herbal medicines as diuretics: a review of the scientific evidence". J Ethnopharmacol. 114 (1): 1–31. doi:10.1016/j.jep.2007.07.023. PMID 17804183.

[2] ttps://www.fda.gov/ohrms/dockets/dailys/00/Jul00/072000/rpt0071.pdf

[Elgorriaga_2018-3] Elgorriaga, A.; Escapa, I.H.; Rothwell, G.W.; Tomescu, A.M.F.; Cúneo, N.R. (2018). "Origin of Equisetum: Evolution of horsetails (Equisetales) within the major euphyllophyte clade Sphenopsida". American Journal of Botany. 105 (8): 1286–1303. doi:10.1002/ajb2.1125. PMID 30025163.