For Phanopyrum
Crins, W.J. 1991. The genera of Paniceae (Gramineae: Panicoideae) in the southeastern United States. J. Arnold Arb., Supplementary Series 1: 171-312.
Freckmann, R.W., and M.G. Lelong. 2003c. Panicum. In Flora of North America Editorial Committee. 2003a. Flora of North America north of Mexico. Volume 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2. Oxford Univ. Press, New York, NY. 783 pp.
Webster, R.D. 1988. Genera of the North American Paniceae (Poaceae: Panicoideae). Systematic Bot. 13: 576-609.
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