For Rhamnus
Bolmgren, K., and B. Oxelman. 2004. Generic limits in Rhamnus L. s.l. (Rhamnaceae) inferred from nuclear and chloroplast DNA sequences. Taxon 53: 383-390.
Brizicky, G.K. 1964a. The genera of Celastrales in the southeastern United States J. Arnold Arb. 45: 206-234.
Hauenschild, F., A. Favre, G.A. Salazar, and A.N. Muellner-Riehl. 2016b. Analysis of the cosmopolitan buckthorn genera Frangula and Rhamnus s.l. supports the description of a new genus, Ventia. Taxon 65: 65-78.
Johnston, L.A. 1975. Revision of the Rhamnus serrata complex. Sida 6(2): 67-79.
Medan & Schirarend. 2004. In Kubitzki, K., ed. 2004. The families and genera of vascular plants. VI. Flowering plants – Dicotyledons – Celastrales, Oxalidales, Rosales, Cornales, Ericales. Springer, Berlin. 489 pp.
Nesom, G.L., and J.O. Sawyer. 2016. Rhamnus. In Flora of North America Editorial Committee. 2016. Flora of North America north of Mexico. Volume 12, Magnoliophyta: Vitaceae to Garryaceae. Oxford Univ. Press, New York, NY. 603 pp.
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