References

For Cubelium

Ballard, H.E., Jr. (in prep.). Violaceae of the Southeastern United States.

Ballard, H.E., Jr. 2020. Violets (Violaceae) of the Great Plains and Eastern North America. https://people.ohio.edu/ballardh/vgpena/. Accessed 2020-10-27

Ballard, H.E., Jr., J. de Paula-Souza, and G.A. Wahlert. 2014. Violaceae. In Kubitzki, K., ed. 2014. The families and genera of vascular plants, XI. Flowering plants – Eudicots – Malpighiales. Springer, Berlin. 331 pp.

Ballard, H.E., Jr., J.T. Kartesz, and M. Nishino. 2023. A taxonomic treatment of the violets (Violaceae) of the northeastern United States and adjacent Canada. J. Torrey Bot. Club 150(1): 3-266.

Ballard, H.E., Jr., R.N. Burwell, and S.L. Lockhart. 2020. Violaceae: Typifications and clarifications of names. In Weakley, A.S., D.B. Poindexter, H.C. Medford, B.A. Sorrie, C.A. McCormick, E.L. Bridges, S.L. Orzell, K.A. Bradley, H.E. Ballard, Jr., R.N. Burwell, S.L. Lockhart, and A.R. Franck. 2020. Studies in the vascular flora of the southeastern United States. VI. J. Bot. Res. Inst. Texas 14: 199-240.

Little, R.J. 2015. Hybanthus. In Flora of North America Editorial Committee. 2015. Flora of North America north of Mexico. Volume 6, Magnoliophyta: Cucurbitaceae to Droseraceae. Oxford Univ. Press, New York, NY. 468 pp.

McKinney, L.E., and N.H. Russell. 2002. Violaceae of the southeastern United States. Castanea 67: 369-379.

Paula-Souza, J. de., and H.E. Ballard, Jr. 2014. Re-establishment of the name Pombalia, and new combinations from the polyphyletic Hybanthus (Violaceae). Phytotaxa 183: 1-15.

Wahlert, G.A., T. Marcussen, J. de Paula-Souza, M. Feng, and H.E. Ballard, Jr. 2014. A phylogeny of the Violaceae (Malpighiales) inferred from plastid DNA sequences: implications for generic diversity and intrafamilial classification. Syst. Bot. 39: 239-252.