Arundinella berteroniana (Schult.) Hitchc. & Chase

Arundinella peruviana (J. Presl) Steud. Syn. Gram. 115. 1854
Thy sanachne peruviana J. Presl, in Presl, Rel. Haenk.,1 : 253. 1830.
Arundinella Deppeana Nees, Bonplandia 3 : 84. 1855. '
Arundinella cubensis Griseb. Mem. Am. Acad. II. 8 : 533. 1862.
Arundinella phragmiioides Griseb. Cat. PI, Cub. 234. 1866.
Arundinella robusta Fourn. Mex. PI. Gram. 54. 1881.
Arundinella lalifolia Fourn. Mex. PI. Gram. 54. 1881.
Arundinella auletica 'RVi^x . (Galeotti, Bull. Acad. Brux. 9^ ; 242; hyponym. 1842) Fourn. Mex.
PI. Gram. 54. 1881. Arundinella scoparia Fourn. Mex. PI. Gram. 55, in part. 1881.
Stems up to 2-3 m. tall; leaf-sbeaths hirs^ite or hispid toward the summit; blades up to 5 dm. long and 2.5 cm. wide, glabrous, or hirsute or hispid on one or both surfaces; panicle up to 4 dm. long, dense and stout or loose and open, its branches usually long, erect or ascending; spikelets, exclusive of the awn, 4r-5.5 mm. long, the first scale 3-nerved, acute, one half to two thirds as long as the second, the second scale 5-nerved, long-acuminate, somewhat recurved above the middle, the apex obtuse, the third scale 5-7-nerved, from a little shorter to somewhat longer than the first scale, the fourth scale about 1.5 mm. long, the awn 8~10 mm. long, the column much longer than the scale, usually more than twice as long, commonly straight, sometimes twisted, rarely loosely spiral, shorter than the subula.
Type locality : Huanuco mountains, Peru.
Distribution: Southern Mexic o to Panama ; Cuba; also in South America.