A. M.  Humphreys, Pirie, M. D., and Linder, H. P., ?Diversification of Danthonoideae: Leaf anatomy and lemma morphology?, in 4th International Conference: The Comparative Biology of the Monocotyledons: 5th International Symposium: Grass Systematics and Evolution, Copenhagen: Monocots IV, 2008, p. 30.