Asanthus

Asanthus
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Supertribe: Helianthodae
Tribe: Eupatorieae
Genus: Asanthus
R.M.King & H.Rob.

Asanthus is a small genus of flowering plants in the daisy family, found only in northern Mexico and the southwestern United States.[1][2][3]

Each of the species was originally named as a member of Brickellia, and later transferred when King and Robinson named the genus. [4] Asanthus and Brickellia both have cypsela (achenes) with 10 ribs, but in Asanthus the style is glabrous and narrow at the base whereas in Brickellia the style has a pubescent, enlarged base. Molecular phylogenetic analysis has provided support that the two genera represent phylogenetically distinct lineages and thus should be recognized as distinct. [5]

The genus is named for American botanist Asa Gray, 1810–1888. His name is added to the Greek word "anthos" meaning "flower."[6]

Species[7]
  1. Asanthus solidaginifolius (A.Gray) R.M.King & H.Rob. - Chihuahua, Durango
  2. Asanthus squamulosus (A.Gray) R.M.King & H.Rob. - Chihuahua, Durango, San Luis Potosí, Arizona, New Mexico[8]
  3. Asanthus thyrsiflorus (A.Gray) R.M.King & H.Rob. (misspelled as Asanthus thrysiflorus when first published)[1] - San Luis Potosí, Coahuila, Chihuahua, Zacatecas, Durango, Jalisco, Aguascalientes


References

  1. 1 2 King, Robert Merrill & Robinson, Harold Ernest. 1972. Studies in the Eupatorieae (Asteraceae) LXXIX: a new genus, Asanthus. Phytologia 24(2):65- 66
  2. ↑ D.J.N.Hind & H.E.Robinson. 2007. Tribe Eupatorieae In: The Families and Genera of Vascular Plants vol.VIII. (Joachim W.Kadereit & Charles Jeffrey, volume editors. Klaus Kubitzky, general editor). Springer-Verlag. Berlin, Heidelberg.
  3. ↑ Tropicos, Asanthus R.M. King & H. Rob.
  4. ↑ R. M. King & H. Robinson. Phytologia 24(2): 66. 1972.
  5. ↑ Schilling, E. E., J. L. Panero, B. S. Crozier & P. Davila. 2013. Relationships of Asanthus (Asteraceae, Eupatorieae). Systematic Botany 38: 253-258.
  6. ↑ Flora of North America, Asanthus R. M. King & H. Robinson
  7. ↑ Flann, C (ed) 2009+ Global Compositae Checklist
  8. ↑ Vascular Plants of the Gila Wilderness, Asanthus squamulosus (Gray) King & H.E. Robinson (Scaleleaf Brickellbush, Mule Mountain Brickellbush)
This article is issued from Wikipedia - version of the 10/19/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.