Abstract
THE genus Youngia was described more than a century ago by Cassini, but the characters on which the genus was based did not preclude the inclusion within it of species of several allied genera of the Cichorieœ, and Cassini's species have long been merged in the genus Crepis. During his long study of the taxonomy and genetics of the latter genus, Prof. Babcock has repeatedly come in contact with certain Asiatic species invariably included in the genus Crepis which appeared generically distinct. For the reception of these species, the genus Youngia has been re-established and redefined.
The Genus Youngia
By Ernest B. Babcock G. Ledyard Stebbins Jr. (Publication 484.) Pp. iii+106+5 plates. (Washington, D.C.: Carnegie Institution of Washington, 1937.) n.p.
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S., W. The Genus Youngia. Nature 142, 1058 (1938). https://doi.org/10.1038/1421058a0
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DOI: https://doi.org/10.1038/1421058a0