, Volume 54, Issue 2, pp 116–119 | Cite as

Dahlia spectabilis (Asteraceae, Coreopsideae), a new species from San Luis Potosí, Mexico

  • Dayle E. Saar
  • Paul D. Sørensen
  • J. P. Hjerting


Dahlia spectabilis (Asteraceae, Coreopsideae), a new species from San Luis Potosí, Mexico, is described and illustrated. The plant is distinguished by its large habit, big flowering heads, and overall lack of trichomes. It occurs within the natural range for the genus and is known from only one location where it is under heavy grazing pressure.


Cual Flower Head Involucral Bract Disk Floret Double Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Dahlia spectabilis (Asteraceae, Coreopsideae), una especie nueva del estado de San Luis Potosí, México, es descrita e ilustrada. Se distingue por su hábito más grande, su grandes inflorescencias y la falta de tricomas. Ocuriendo dento del rango natural del género, conocida solo por un poblacón, la cual está sufriendo por presión de ganado.


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Literature Cited

  1. Saar, D. E. &P. D. Sørensen. 2000.Dahlia parvibracteata (Asteraceae, Coreopsideae), a new species from Guerrero, Mexico. Novon 10: 407–410.CrossRefGoogle Scholar
  2. Sørensen, P. D. 1969. Revision of the genusDahlia (Compositae, Heliantheae-Coreopsidinae). Rhodora 71: 309–365.Google Scholar
  3. — 1980. New taxa in the genusDahlia (Asteraceae, Heliantheae-Coreopsidinae). Rhodora 82: 353–360.Google Scholar
  4. — 1987.Dahlia congestifolia, sectionEntemophyllon (Asteraceae: Heliantheae, Coreopsidinae), new from Hidalgo, Mexico. Rhodora 89: 197–203.Google Scholar

Copyright information

© The New York Botanical Garden Press 2002

Authors and Affiliations

  • Dayle E. Saar
    • 1
  • Paul D. Sørensen
    • 1
  • J. P. Hjerting
    • 2
  1. 1.Department of Biological SciencesNorthern Illinois UniversityDeKalbU.S.A.
  2. 2.Botanic GardenUniversity of CopenhagenDenmark

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