Gamochaeta

Gamochaeta
Gamochaeta calviceps
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Gnaphalieae[1]
Genus: Gamochaeta
Wedd.
Type species
Gamochaeta americana[2][3]
(Mill.) Wedd.
Synonyms[1]
  • Gnaphalium sect. Gamochaeta (Wedd.)
  • Gnaphalium subg. Gamochaeta (Wedd.) Gren.

Gamochaeta is a genus of flowering plants in the aster family.[4] There has not always been agreement among botanists regarding its status as a recognized genus, but it has become more accepted in recent years.[5][6] It currently includes many plants that previously belonged in genus Gnaphalium. Like many species of Gnaphalium, many Gamochaeta are called cudweeds or everlastings.

Gamochaeta are native to North and South America, with one species endemic to Tristan da Cunha in the South Atlantic.[6][7] Some species are found in other regions as introduced species outside of their native ranges, and sometimes as invasive noxious weeds.[6][8]

Plants of this genus have "relatively small heads in spiciform (spike-like) arrays, concave post-fruiting receptacles, truncate collecting appendages of style branches in bisexual florets, relatively small cypselae (fruits) with minute, mucilage-producing papilliform hairs on the faces, and pappus bristles basally connate (joined) in smooth rings and released as single units."[6]

Species[1][6][9][10][11][12]
  1. Gamochaeta aliena - Chile
  2. Gamochaeta ambatensis- Catamarca
  3. Gamochaeta americana - lechuguilla, palomita, American everlasting - South America, Mesoamerica, West Indies
  4. Gamochaeta andina - Chile
  5. Gamochaeta antarctica - Antarctic cudweed - Tierra del Fuego, Falkland Islands
  6. Gamochaeta antillana - southeastern USA
  7. Gamochaeta argentina - Rio Grande do Sul, Uruguay, northeastern Argentina
  8. Gamochaeta argyrinea - silvery cudweed - California, southeastern USA
  9. Gamochaeta axillaris - Chile
  10. Gamochaeta badillana - Venezuela
  11. Gamochaeta beckii[13] - Bolivia
  12. Gamochaeta berteroana - Chile
  13. Gamochaeta boliviensis - Bolivia
  14. Gamochaeta calviceps - southeastern USA
  15. Gamochaeta camaquaensis - Rio Grande do Sul
  16. Gamochaeta chamissonis - Chile, Argentina, Juan Fernández Islands
  17. Gamochaeta chilensis - Chile
  18. Gamochaeta chionesthes - white-cloaked cudweed - southeastern USA
  19. Gamochaeta coarctata - South America
  20. Gamochaeta depilata - Neuquén, Chile
  21. Gamochaeta deserticola - Tarapaca, Salta, Jujuy
  22. Gamochaeta diffusa - Neuquén, Chile
  23. Gamochaeta erecta - Rio Grande do Sul
  24. Gamochaeta girardiana - Rio Grande do Sul
  25. Gamochaeta grazielae - Rio de Janeiro
  26. Gamochaeta hiemalis - Southern Brazil
  27. Gamochaeta humilis - Antofagasta, Peru, Bolivia
  28. Gamochaeta irazuensis - Costa Rica
  29. Gamochaeta longipedicellata - Jujuy
  30. Gamochaeta lulioana - Peru, Bolivia
  31. Gamochaeta malvinensis - Tierra del Fuego, Falkland Islands
  32. Gamochaeta meridensis - Venezuela
  33. Gamochaeta monticola - Neuquén, Chile, Bolivia
  34. Gamochaeta neuquensis - Neuquén, Rio Negro, central + southern Chile
  35. Gamochaeta nigrevestis - southeastern Brazil
  36. Gamochaeta nivalis - Chile, Argentina
  37. Gamochaeta oligantha - Santiago, Valparaíso
  38. Gamochaeta oreophila - Peru
  39. Gamochaeta pensylvanica - Mesoamerica
  40. Gamochaeta platensis - Uruguay, northeastern Argentina, southern Brazil
  41. Gamochaeta polybotrya - Chile, Argentina
  42. Gamochaeta procumbens - central Chile
  43. Gamochaeta purpurea - North America
  44. Gamochaeta rizzinii - Rio de Janeiro, Rio Grande do Sul
  45. Gamochaeta rosacea - Durango, San Luis Potosi
  46. Gamochaeta serpyllifolia - Chile, Argentina
  47. Gamochaeta simplicicaulis - simple-stem cudweed - South America; naturalized in New Zealand + southeastern USA
  48. Gamochaeta sphacelata - South America, Mexico, Texas
  49. Gamochaeta spiciformis - Chile, Argentina
  50. Gamochaeta stachydifolia - Brazil, Argentina, Chile, Uruguay, Juan Fernández Islands
  51. Gamochaeta stagnalis - desert cudweed - Mexico, Guatemala, USA (California Arizona New Mexico)
  52. Gamochaeta suffruticosa - Coquimbo
  53. Gamochaeta thouarsii - Tristan da Cunha
  54. Gamochaeta ustulata - Pacific Coast of USA + Canada
  55. Gamochaeta valparadisea - Valparaíso
  56. Gamochaeta villarroelii - Santiago

References

  1. 1 2 3 Flann, C (ed) 2009+ Global Compositae Checklist
  2. ↑ lectotype designated by Cabrera, A. L. 1961. Observaciones sobre las Inuleae-Gnaphalineae (Compositae) de América del Sur. Boletín de la Sociedad Argentina de Botánica 9: 362.
  3. ↑ Tropicos, Gamochaeta Wedd.
  4. ↑ Weddell, Hugh Algernon. 1855. Chloris andina :essai d'une flore de la région alpine des Cordillères de l'Amérique du Sud 1(4–6): 151-154 short descriptions in Latin, longer descriptions and commentary in French
  5. ↑ Nesom, G. L. 1990. The taxonomic status of Gamochaeta (Asteraceae: Inuleae) and the species of the United States. Phytologia 68: 186–198.
  6. 1 2 3 4 5 Gamochaeta. Flora of North America.
  7. ↑ Evenhuis, N. L. and L. G. Eldredge, Eds. (2012). Records of the Hawaii Biological Survey for 2011. Part II: Plants. Bishop Museum Occasional Papers No. 113.
  8. ↑ Flora of China Vol. 20-21 Page 776 合冠鼠麴草属 he guan shu qu cao shu GamochaetaWeddell, Chlor. Andina. 1: 151. 1856.
  9. ↑ Gamochaeta. The Plant List.
  10. ↑ Gamochaeta. Germplasm Resources Information Network.
  11. ↑ Gamochaeta. Integrated Taxonomic Information System (ITIS).
  12. ↑ Biota of North America Program 2013 county distribution maps
  13. ↑ Freire, S. E. and E. Urtubey. (2013). Gamochaeta beckii (Gnaphalieae, Asteraceae): A new species from Bolivia. Systematic Botany 38(1):259-265.
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