References

For Scorzoneroides

Bogler, D.J. 2006d. Leontodon. In Flora of North America Editorial Committee. 2006a. Flora of North America north of Mexico. Volume 19, Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford Univ. Press, New York, NY. 579 pp. Google Scholar

Cronquist, A. 1980. Asteraceae, Volume I, Vascular flora of the Southeastern United States. University of North Carolina Press, Chapel Hill, N.C. Google Scholar

Greuter, W., W. Gutermann, and S. Talavera. 2006. A preliminary conspectus of Scorzoneroides (Compositae, Cichorieae) with validation of the required new names. Willdenowia 36(2): 689-692. Google Scholar

Samuel, R., W. Gutermann, T.F. Stuessy, C.F. Ruas, H.-W. Lack, K. Tremetsberger, S. Talavera, B. Hermanowski, and F. Ehrendorfer. 2006. Molecular phylogenetics reveals Leontodon (Asteraceae, Lactuceae) to be diphyletic. Amer. J. Botany 93: 1193-1205. Google Scholar