Youngia

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Youngia
Youngja japonica1.jpg
Youngia japonica
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae[1]
Genus: Youngia
Cass.
Type species
Youngia lyrata
Cass.[2][3]
Synonyms[1]
  • Crepis sect. Youngia (Cass.) Benth.
  • Hieraciodes Möhring ex Kuntze

Youngia is a genus of Asian plants in the dandelion tribe within the sunflower family. There are several weed species in the genus including the endangered Youngia nilgiriensis from Sispara in southern India, and Youngia japonica, which is also known as Japanese Hawkweed.[4]

Youngia was first described in 1831 by H. Cassini,[5] and the genus was later united with Crepis.[6] Taxomonic and cytogenetic studies by E. B. Babcock and G. Ledyard Stebbins led to the reclassification of the genus in the 1930s.[7][8][9]

Species[1]

References[edit]

  1. ^ a b c Flann, C (ed) 2009+ Global Compositae Checklist search for Youngia
  2. ^ lectotype designated by Nelson, C. H. 2008. Catálogo de las Plantas Vasculares de Honduras 1–1576. Secretaria de Recursos Naturales y Ambiente, Tegucigalpa
  3. ^ Tropicos, Youngia Cass.
  4. ^ Flora of China Vol. 20-21 Page 252 黄鹌菜属 huang an cai shu Youngia Cassini
  5. ^ Cassini, Alexandre Henri Gabriel de. 1831. Annales des Sciences Naturelles (Paris) 23: 88-90descriptions and commentary in French
  6. ^ Bentham & Hooker, Genera Plantarum 2 (1873): 514
  7. ^ Babcock, E.B. and Stebbins, G.L. 1937. The genus Youngia. Carnegie Institution of Washington
  8. ^ Everitt, J.H.; Lonard, R.L.; Little, C.R. (2007). Weeds in South Texas and Northern Mexico. Lubbock: Texas Tech University Press.  ISBN 0-89672-614-2
  9. ^ Koh Nakamura et al., 2012. Extreme habitats that emerged in the Pleistocene triggered divergence of weedy Youngia (Asteraceae) in Taiwan. Molecular Phylogenetics and Evolution 63: 486–499.