@article {3768,
	title = {Native and introduced species of the genera Hordeum and Agropyron},
	journal = {U.S. Department of Agriculture, Division of Agrostology Bulletin},
	volume = {4},
	year = {1897},
	pages = {23-39},
	author = {Scribner, F.L. and Smith, J.G.}
}
