References for Gentianaceae
Gillett, J.M. 1957. A revision of the North American species of Gentianella Moench. Ann. Missouri Bot. Gard. 44:195-269.
Gillett, J.M. 1979. New combinations in Hypericum, Triadenum, and Gentianopsis. Can. J. Bot. 57:185-186.
Gillett, J.M. 1963. The Gentians of Canada, Alaska, and Greenland. Can. Dept. Agric. Publ. 1180:1-99.
Iltis, H.H. 1965. Gentianopsis (Gentianaceae); transfers and phytogeographic comments. Sida 2:129-154.

Source for the Reference Lists

George W. Douglas, Del Meidinger and Jim Pojar. 1998-2002. Illustrated Flora of British Columbia.