For Loganiaceae
Mathews, K.G. 2023. Loganiaceae. In Flora of North America Editorial Committee. 2023c. Flora of North America north of Mexico. Volume 14, Magnoliophyta: Gentianaceae to Hydroleaceae. Oxford Univ. Press, New York, NY. 505 pp.
Rogers, G.K. 1986. The genera of Loganiaceae in the southeastern United States. J. Arnold Arb. 67: 143-185.
Struwe, L., K.L. Gibbons, B.J. Conn, and T.J. Motley. 2018. Loganiaceae. In Kadereit, J., & V. Bittrich. 2018. The families and genera of flowering plants. XV. Flowering plants. Eudicots. Apiales, Gentianales (except Rubiaceae). Springer, Cham.
Struwe, L., V.A. Albert, and B. Bremer. 1994. Cladistics and family level classification of the Gentianales. Cladistics 10: 175-206.
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