Description of Gentianaceae - Habit and leaf form; Anatomy; Morphology; Physiology; Biochemistry; Geography. www.keil.ukans.edu/delta/angio/www/gentiana.htm
Phylogeography of the Gentianaceae - Molecular phylogeny, caryology and systematics of Gentianaceae at the University of Neuchatel, Switzerland www.unine.ch/biol/phan/research.html#Phylogeography
