Gentianaceae
- Botanical characteristics of this family of plants with illustrations of several species.
- http://delta-intkey.com/angio/www/gentiana.htm

Fringed Gentian - Gentianopsis crinita
- Illustrated article by the Georgia Plant Conservation Alliance covering natural history and conservation of this species.
- http://www.gabotsoc.org/articleFringedGentian.htm

Phylogeography of the Gentianaceae
- Molecular phylogeny, caryology, and systematics of Gentianaceae at the University of Neuchatel, Switzerland.
- http://www.unine.ch/bota/ebolab/gentianaceae/gentmain.html