A(iU«»STIl>K.E. 295 



pyramitlal or ovoid, S-15cm. loiij;. the niyn very sIoikUt, 8olitary, 

 8j)r(.'!ulin^', Hiid llu-ir l)niMclies iM-ariii;,' iVw llowi-rs ul tlinonds (»r tlio 

 loii^ piMiicols. S|iikelcts purplish; empty j,'IunH'S .suIk'(|IuiI or the 

 lower .HJiorter, often ciliate at tlie aj)ex and on tlu' hack, ovate, 

 l-iiervetl, 0.5-0.7 inin. lon<r; Moral {jliime oval, olweurely U-iierved, 

 1 nun. or lus» in len<^th : palea as lon^ and as wide as its ^lnin(>, 

 2-nerved ; lloral ;,dunie and palea Ixtth thinly jjiiheseent on the 

 nerves. 



Texas, XeaUcji tor Nat. Mus. ; Colorado. John Wolfv; Arizona, 

 Priiiiilr in 1SS4. 



A delicate little annual found in moist places; Colorado. New 

 Mexieo, Arizona, 'i'exas. Mqxieo, 



20. S. Sacatilla Griseb. Sclied. Fourn. Mex. PI. Knum. (Jram. 

 101 (ISK(i). 



An erect leafy and branching perennial. 20-40 em. high, with 

 cree])ing rootstocks. Culms with 10-12 nodes, each hearing a slen- 

 der branch 12 cm. long, and ea(;h again usually branching. Leaves 

 very numerous, sheaths mostly about the length of the internodea; 

 ligule al)ruptly acute, less than 1 mm. long; blades involute, 

 S2)reading or recurved, 0.5-3 cm. (mostly 1 cm.) long, 0.5 diam. 

 Panicle very sim])le. spikelets termimil or lateral. I-.'{ cm. long. 

 Spikelets l,T-2 mm. long, oval; empty glumes sulie(|ual, about 1 

 mm. long, 1-nervetl. ovate; lloral glume 3-nerved; palea nearly as 

 long. Anthers 1.2 mm. long, 



'J'exas (Del Ifio). Xctdhy for U. S. Nat. Mus. 



Also found in Mexico. 



21 S. depauperatus (Torr.). Scribn. ]Jull. Torr. Club. !):103 

 (18S2). Vilfa (U'lutupcmta Torr.; Hook. Flor. Bor. Am. 2:257 

 (1840). Vilfii iifuis Torr. Pacif. K. U. Rep. 5: 305 (1853). \iffa 

 plunihea Triu. teste Fourn. Mex. PI. Elnum. Cram. 101 (188G). 



A very slender and variable tufted decumbent and much- 

 branched perennial, 10-GO cm. high, often with stout rootstocks. 

 Sheatlis loose, about as long as the internodes, which are from 4-12 

 in number, margins hyaline; ligule 0.5-3 mm. long, obtuse or 

 acute; blades scabrid above, usually involute, recurved, 1-5 cm. 

 long, about 1 mm. wide. Panicle but little exserted, slightly in- 



