@inbook {4191,
	title = {Tragus},
	booktitle = {Flora of North America North of Mexico, vol 25, Magnoliophyta: Commelinidae (in part): Poaceae, part 2.},
	year = {2003},
	pages = {278-281},
	keywords = {MEXICO, NORTH AMERICA, POACEAE, TRAGUS},
	author = {Wipff, J. K.},
	editor = {Barkworth, M. E. and et al}
}
