Accepted By:
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Abrams, L. 1923. Ferns to Birthworts. 1: 1–557. In L.R. Abrams (ed.) Ill. Fl. Pacific States. Stanford University Press, Stanford.
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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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Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley.
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