@book {8484,
	title = {Manual of the grasses of the United States, ed. 2 (rev. A. Chase). U.S.D.A. Miscellaneous Publication n{\textdegree} 200},
	year = {1951},
	month = {1951///},
	pages = {1051 - 1051},
	publisher = {Washington D.C},
	organization = {Washington D.C},
	author = {A.S. Hitchcock}
}
@article {8088,
	title = {The North American species of Echinochloa. Contr. U.S},
	journal = {Nat. Herb},
	volume = {22},
	year = {1920},
	month = {1920///},
	pages = {133 - 153},
	author = {A.S. Hitchcock}
}
