AdUOSTIDE.E. 215 



nerved. 10-1"2 mm. lonp, second 3-nerved und 8-10 mm. lon^'j 

 floral glume pubescent, C-8 mm. long, including the short iicuto 

 callus and the crown of hairs at the ajjcx; uwn 2-4 cm. long, twico 

 genicailate and plumose to the nppcr bund, the longest hairs about 

 1 mm. long. Anthers beardless. 



"Washington, Sanilbcry 209; Oregon, Cuxick 1320, Ihwell ; 

 California, Jones 2583, Pringle, Parish 2491; Southern California^ 

 Palmer 232. 



Found in Nevada, California, and Oregon. 



3. S. speciosa Trin. et Rupr, Mem. Acad. St. Petersb. (VI.) 

 6:45 (1842). .V. chrysophjUa Desv. C. (lay. Fl. Ciiil. fi: 278. 



Perennial ; culms erect, densely tufted, 20-50 cm. high. Sheaths 

 tawny, shorter than the internodes, the upper one inflated; upper lig- 

 ule 2 mm. long, the lower minute and fringed; leaves of sterile shoots 

 erect, scabrid, blades half or two-thirds as long jis the culm, those of 

 the culm three in number, 5-15 cm. long, closely involute. Pani(;le 

 often partially included, spikelike, G-20 cm. long, the rays usually 

 in pairs bearing 1-3 spikelets. Empty glumes nearly equal, hya- 

 line, acuminate, about 16 mm. long, first 3-nerved, second 5-7- 

 nerved; floret silky pubescent, 5-nerved, 8-12 mm. long including 

 the short curved callus and the 2-toothed hairy apex; awn 3-4 cm. 

 long, geniculate below the middle, the twisted portion plumose with 

 the white hairs 3-6 mm. long. Anthers beardless. 



California (Mojave Desert). Parish Brothers 879, Pringle; 

 Nevada, Shockley, Jones; Arizona, Letnmon 279. 



Found in Arizona to California, and in Cliili. 



4. S. spartea Trin. Mem. Acad. St. Petersb. (VI.) 1 : 82 (1831), 

 Porcupine-grass. 



Culms rather stout, 50-120 cm. Mj-h. Sheaths about the length 

 of the internodes; ligule 3-5 mm. long; blades 3, smooth, all seta- 

 ceous, the lower two-thirds as long as the culm, the upper one 10- 

 20 cm. long. Panicle exserted, when mature contracted. 12-15 

 cm. long, rays usually in pair- '^ single, some of the longest 10 

 cm. long, bearing 1-2 flowers nv.u- the end. Empty glumes sub- 

 equal, first 3-6-nerved, second 7-8-nerved, 30-45 mm. long includ- 

 ing the long attenuated joint; floret about 2 cm. long, pubescent on 



