Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018. Scientific name: Piptatherum pungens (Torr. ex Spreng.) Dorn; also Oryzopsis pungens (Torr. ex Spreng.) Hitchc.; also Piptatheropsis pungens (Torr.) Romasch., P.M. Peterson & R.J. Soreng Common name(s): mountain ricegrass, sharp piptatherum, short-horned ricegrass, short-awned mountain ricegrass, slender mountain ricegrass,