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
Genus: Youngia
Cass.

Youngia is an Asiatic genus of Asteraceae. There are several weed species in the genus including the endangered Youngia nilgiriensis Babcock from Sispara and Youngia japonica, which is also known as Japanese Hawkweed.

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

References[edit]

  • Babcock, E.B. and Stebbins, G.L. 1937. The genus Youngia. Carnegie Institution of Washington
  • 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
  • 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.