Nassella tenuissima (Trin.) Barkworth, Taxon 39: 612 (1990) (syn: Stipa cirrosa E.Fourn. ; Stipa geniculata Phil. ; Stipa mendocina Phil. ; Stipa oreophila Speg. ; Stipa subulata E.Fourn. ; Stipa tenuissima Trin.; Stipa tenuissima f. colorata F.A.Roig ; Stipa tenuissima f. nana Parodi ; Stipa tenuissima var. oreophila (Speg.) Speg. ; Stipa tenuissima var. planicola Speg. ); . S. Central U.S.A. to Mexico, Argentina: Argentina Northeast, Argentina Northwest, Argentina South, Colorado, Mexico Central, […]