Youngia Altaica
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''Youngia'' is a genus of Asian plants in the tribe Cichorieae within the family Asteraceae. There are several weedy species in the genus as well as the endangered '' Youngia nilgiriensis'' from Sispara in southern India, and ''
Youngia japonica ''Youngia japonica'', commonly called Oriental false hawksbeard, is a species of flowering plant in the family Asteraceae. Native to eastern Asia, it is now found as a weed nearly worldwide. Description It is an annual that produces yellow flowe ...
'', which is also known as Japanese hawkweed. ''Youngia'' was first described in 1831 by H. Cassini, and the genus was later united with '' Crepis''. Taxonomic and cytogenetic studies by
E. B. Babcock Ernest Brown Babcock (July 10, 1877 – December 8, 1954) was an American plant geneticist who pioneered the under standing of plant evolution in terms of genetics. He is particularly known for seeking to understand by field investigations and e ...
and
G. Ledyard Stebbins George Ledyard Stebbins Jr. (January 6, 1906 – January 19, 2000) was an American botanist and geneticist who is widely regarded as one of the leading evolutionary biologists of the 20th century. Stebbins received his Ph.D. in botany from Har ...
led to the reclassification of the genus in the 1930s.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. ; SpeciesFlann, C (ed) 2009+ Global Compositae Checklist search for ''Youngia''
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References

Asteraceae genera Taxa named by Henri Cassini {{Cichorieae-stub