Thelesperma

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

Cosmidium Nutt.

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]

Members of the genus are used by a number of the southwestern Native American peoples as a 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]
  1. Thelesperma ambiguum - TX NM
  2. Thelesperma burridgeanum - TX
  3. Thelesperma filifolium - Coahuila, Nuevo León, AZ NM TX LA MS AL AR MO OK KS CO WY NE SD
  4. Thelesperma flavodisum - TX LA AR
  5. Thelesperma graminiformis - Nuevo León
  6. Thelesperma longipes - Coahuila, Nuevo León, Tamaulipas, San Luis Potosí, AZ NM TX
  7. Thelesperma megapotamicum - Argentina, Chihuahua, Coahuila, Nuevo León, CA OR AZ NM TX UT CO KS MO WY SD MN IL IN MI
  8. Thelesperma muelleri - Nuevo León
  9. Thelesperma nuecense - TX
  10. Thelesperma scabridulum - Nuevo León
  11. Thelesperma simplicifolium - NM TX Coahuila, Nuevo León, Tamaulipas, Durango, Zacatecas
  12. Thelesperma subaequale - Nuevo León
  13. Thelesperma subnudum - ALB SAS ND MT WY CO NM UT NV AZ
  14. Thelesperma subsimplicifolium

References

  1. 1 2 3 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", Amer. 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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