Muhlenbergia brevis C.O. Goodd. Muhlenbergia brevis C.O. Goodd. in J. Wash. Acad. Sci. 31(12): 505. 1941 sec. Dávila & al. 2018=Muhlenbergia schaffneri var. longiseta Scribn. in Proc. Acad. Nat. Sci. Philadelphia 43(2): 297-298. 1891 syn. sec. Dávila & al. 2006