Thelesperma

Thelesperma is a genus of North American and South American plants in the cosmos tribe within the sunflower family.[2][3][4] Greenthread is a common name for plants in this genus.[5]

Thelesperma
Thelesperma filifolium
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Subfamily:
Asteroideae
Tribe:
Coreopsideae[1]
Genus:
Thelesperma

Type species
Thelesperma scabiosoides
Synonyms[1]

Members of the genus are used by a number of the southwestern Native American peoples as an herbal tea; as such, it is sometimes called "Navajo tea," "Hopi tea," etc. T. megapotamicum contains luteolin.[6] It also appears that many of the species contain a very similar chromatographic profile, and thus may contain very similar profiles of flavenoids.[7] The genus is closely related to parts of Coreopsis and to certain North American Bidens species (including Bidens coronata and Bidens comosa).[8]

Species[1][9]

References
  1. Flann, C (ed) 2009+ Global Compositae Checklist
  2. Lessing, Christian Friedrich. 1831. Linnaea 6(3): 511–513 in Latin
  3. Flora of North America Vol. 21 Page 199 Thelesperma Lessing, Linnaea. 6: 511. 1831.
  4. Hansen, C. J., L. Allphin, and M. D. Windham. 2002. Biosystematic analysis of the Thelesperma subnudum complex (Asteraceae). Sida 20: 71–96.
  5. "Thelesperma". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 9 December 2015.
  6. Bruce A. Bohm, Tod F. Stuessy (2001), "Flavonoids of the sunflower family (Asteraceae)", Science, 292, doi:10.1126/science.292.5520.1306a
  7. TE Melchert (1966), "Chemo-Demes of Diploid and Tetraploid Thelesperma Simplicifolium", Am. J. Bot., 53 (10): 1015–1020, doi:10.2307/2440681, JSTOR 2440681
  8. Crawford, D. J.; Mort, M. E. (2005), "Phylogeny of Eastern North American Coreopsis (Asteraceae-Coreopsideae): insights from nuclear and plastid sequences, and comments on character evolution", American Journal of Botany, 92 (2): 330, doi:10.3732/ajb.92.2.330, PMID 21652409
  9. Biota of North America Program 2013 county distribution maps

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