Robynn K. Shannon, Warren L. Wagner: Oparanthus (Asteraceae, Subtribe Coreopsidinae) Revisited. In: Allertonia. Band7, Nr.4, 1997, ISSN0735-8032, S.273–295, JSTOR:23190460.
ufl.edu
people.clas.ufl.edu
D. J. Crawford, M. Tadesse, M. E. Mort, R. T. Kimball, C. P. Randle: Coreopsideae. In: V. A. Funk, A. Susanna, T. F. Stuessy, R. J. Bayer (Hrsg.): Systematics, evolution and biogeography of Compositae. International Association for Plant Taxonomy, Vienna 2009, S.713–730 (Volltext [PDF]).
zdb-katalog.de
Robynn K. Shannon, Warren L. Wagner: Oparanthus (Asteraceae, Subtribe Coreopsidinae) Revisited. In: Allertonia. Band7, Nr.4, 1997, ISSN0735-8032, S.273–295, JSTOR:23190460.