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N.  Snow, ?Briza?, in Flora of North America, vol. 24, Oxford University Press, 2007, pp. 612 - 614.

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M. B.  Piep, ?Brachypodium?, in Flora of North America, vol. 24, Oxford University Press, 2007, pp. 187 - 192.

M. E.  Barkworth, ?Agropyron?, in Flora of North America, vol. 24, Oxford University Press, 2007, pp. 277 - 279.

M. E.  Barkworth, ?Polypogon?, in Flora of North America, vol. 24, Oxford University Press, 2007, pp. 662 - 668.

M. E.  Barkworth, ?Phalaris?, in Flora of North America, vol. 24, Oxford University Press, 2007, pp. 764 - 773.

M. E.  Barkworth and Anderton, L. K., ?Glyceria?, in Flora of North America, vol. 24, Oxford University Press, 2007, pp. 68 - 88.

M. J.  Harvey, ?Agrostis?, in Flora of North America, vol. 24, Oxford University Press, 2007, pp. 633 - 662.