For Ligustrum
Dong, W., E. Li, Y. Liu, C. Xu, Y. Wang, K. Liu, X. Cui, J. Sun, Z. Suo, Z. Zhang, J. Wen, and S. Zhou. 2022. Phylogenomic approaches untangle early divergences and complex diversifications of the olive plant family. BMC Biology 20(1): 92.
Green in Kadereit (2004)
Hardin, J.W. 1974. Studies of the southeastern United States flora. IV. Oleaceae. Sida 5: 274-285.
Li, J., B. Goldman-Huertas, J. DeYoung, and J. Alexander III. 2012. Phylogenetics and diversification of Syringa inferred from nuclear and plastid DNA sequences. Castanea 77: 82-88.
Li, J., J.H. Alexander, and D. Zhang. 2002. Paraphyletic Syringa (Oleaceae): evidence from sequences of nuclear ribosomal DNA ITS and ETS regions. Syst. Bot. 27: 592-597.
Nesom, G.L. 2009a. Taxonomic overview of Ligustrum (Oleaceae) naturalized in North America north of Mexico. Phytologia 91: 467-482.
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