J. K.  Wipff, ?Bouteloua?, in Flora of North America North of Mexico, vol 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2., M. E.  Barkworth and al, et, Eds. 2003, pp. 250-269.

J. K.  Wipff, ?Tragus?, in Flora of North America North of Mexico, vol 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2., M. E.  Barkworth and al, et, Eds. 2003, pp. 278-281.

J. K.  Wipff, ?Digitaria?, in Flora of North America North of Mexico, vol 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2., M. E.  Barkworth and al, et, Eds. 2003, pp. 358-383.

, ?Brachiaria?, in Flora of North America North of Mexico, vol 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2., M. E.  Barkworth and al, et, Eds. 2003, pp. 488-489.

, ?Urochloa?, in Flora of North America North of Mexico, vol 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2., M. E.  Barkworth and al, et, Eds. 2003, pp. 492-507.

J. K.  Wipff, ?Wipff (2003)?, in Flora of North America North of Mexico, vol 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2., M. E.  Barkworth, Capel, K. M., Long, S., and Piep, M. B., Eds. Oxford University Press, New York, 2003, pp. 515-529.

J. K.  Wipff, ?Schizachyrium?, in Flora of North America North of Mexico, vol 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2., M. E.  Barkworth and al, et, Eds. 2003, pp. 666-677.

J. Valdes Reyna, ?Distribution of Grasses from Northeastern Mexico?, in Monocots II Abstracts, K.  Wilson, Ed. Sydney: RBG, 1998, p. 89.

J.  Valdes-Reyna and Cordero, I. Cabral, ?Chorology of Mexican Grasses?, in Biological Diversity of Mexico: Origins and Distribution, T. P.  Ramamoorhty, Bye, R., Lot, A., and Fa, J., Eds. New York: Oxford University Press, 1993, pp. 439-446.

, ?Cenchrus?, in Flora of North America North of Mexico, vol 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2., M. E.  Barkworth, Ed. 2003, pp. 529-535.

, ?Endemic species of Grasses in Mexico: a phytogeographic approach?, in Monocots III Abstracts, Claremont: Rancho Santa Ana, 2003.