For Frasera
Drake, J. 2011. Gentians of the eastern United States. Breath O' Spring Press, Suwanee, GA. 219 pp. Google Scholar
Horn, C.N. 1997. An ecological study of Frasera caroliniensis in South Carolina. Castanea 62: 185-193. Google Scholar
Pringle, J.S. 2023. Gentianaceae. Pp. 3-92 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. 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
Threadgill, P.F., and J.M. Baskin. 1978. Swertia caroliniensis or Frasera caroliniensis? Castanea 43: 20-22. Google Scholar