Accepted By:
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Hitchcock, A. S. 1951. Man. Grasses U.S. (ed. 2) 1–1051. U.S. Department of Agriculture, Washington, D.C.
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Swallen, J. R. 1955. Gramineae. En: Standley, P.C. & Steyermark, J.A. (eds.), Flora of Guatemala - Part II. Fieldiana, Bot. 24(2): i–ix, 1–390.
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