Watson, L. and M. J. Dallwitz. 1992 onwards. Lygeum.Archived 19 November 2007 at the Wayback Machine The Grass Genera of the World. DELTA – DEscription Language for TAxonomy. Version: 18 December 2012.
Watson, L. and M. J. Dallwitz. 1992 onwards. Lygeum.Archived 19 November 2007 at the Wayback Machine The Grass Genera of the World. DELTA – DEscription Language for TAxonomy. Version: 18 December 2012.