Nassella pulchra (Hitchc.) Barkworth Nassella pulchra (Hitchc.) Barkworth in Taxon 39(4): 611. 1990 sec. Dávila & al. 2018≡Stipa pulchra Hitchc. in Amer. J. Bot. 2: 301. 1915 syn. sec. Dávila & al. 2006