Youngia

Youngia
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] Taxonomic 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]
  1. Youngia alashanica
  2. Youngia americana
  3. Youngia bifurcata
  4. Youngia blinii
  5. Youngia cineripappa
  6. Youngia erythrocarpa
  7. Youngia fusca
  8. Youngia fuscipappa
  9. Youngia hastiformis
  10. Youngia henryi
  11. Youngia heterophylla
  12. Youngia japonica
  13. Youngia kangdingensis
  14. Youngia lanata
  15. Youngia longiflora
  16. Youngia longipes
  17. Youngia mairei
  18. Youngia nansiensis
  19. Youngia napifolia
  20. Youngia nilgiriensis
  21. Youngia nujiangensis
  22. Youngia paleacea
  23. Youngia pilifera
  24. Youngia pratti
  25. Youngia pseudosenecio
  26. Youngia racemifera
  27. Youngia rosthornii
  28. Youngia rubida
  29. Youngia scaposa
  30. Youngia setigera
  31. Youngia silhetensis
  32. Youngia stebbinsiana
  33. Youngia taiwaniana
  34. Youngia terminalis
  35. Youngia wilsonii
  36. Youngia yilingii

References

  1. 1 2 3 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: 88-90 descriptions 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.


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