References

For Gentiana

Drake, J. 2011. Gentians of the eastern United States. Breath O' Spring Press, Suwanee, GA. 219 pp. Google Scholar

Favre, A., J.S. Pringle, J. Heckenhauer, E. Kozuharova, Q. Gao, E. Moriarty Lemmon, A.R. Lemmon, H. Sun, N. Tkach, S. Gebauer, S.‐S. Sun, P.-C. Fu. 2020. Phylogenetic relationships and sectional delineation within Gentiana (Gentianaceae). Taxon 69(6): 1221-1238. Google Scholar

Halda, J.J. 1996. The genus Gentiana. SEN, Dobré. Google Scholar

Ho, T.-N., and S.-W. Liu. 1990. The infrageneric classification of Gentiana (Gentianaceae). Bull. Br. Mus. Nat. Hist. (Bot.) 20: 169-192. Google Scholar

Ho, T.-N., and S.-W. Liu. 2001. A worldwide monograph of Gentiana. Science Press, Beijing. Google Scholar

Pringle, J.S. 1967. Taxonomy of Gentiana, section Pneumonanthe, in eastern North America. Brittonia 19: 1-32. Google Scholar

Pringle, J.S. 1977. Gentiana linearis (Gentianaceae) in the Southern Appalachians. Castanea 42: 1-8. Google Scholar

Pringle, J.S., and A.S. Weakley. 2009. Gentiana latidens (Gentianaceae), the Balsam Mountain gentian. Rhodora 111: 389-397. Google Scholar

Struwe, L., and J.S. Pringle. 2018. Gentianaceae. In Kadereit, J., & V. Bittrich. 2018. The families and genera of flowering plants. XV. Flowering plants. Eudicots. Apiales, Gentianales (except Rubiaceae). Springer, Cham. Google Scholar

Weakley, A.S., and D.B. Poindexter. 2020a. Continued recognition of Hexastylis, with two species transferred to Hexastylis from Asarum. 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. Google Scholar

Yuan, Y.-M., P. Küpfer, & J.J. Doyle. 1996. Infrageneric phylogeny of the genus Gentiana (Gentianaceae) inferred from nucleotide sequences of the internal transcribed spacers (ITS) of nuclear ribosomal DNA. Amer. J. Bot. 83: 641-652. Google Scholar