CATALOGUE. 



381 



silky-pubescent especially at base, the callus short and acute ; awn 1 J' long, 

 twisted and geniculate, densely pilose below, scabrous above.— Yosemite 

 Trail, California, (5038 Bolander.) Pah-Ute Range, Nevada; 5,000 feet 

 altitude ; June. (1,296.) 



Stipa Mongolica, Turcz., (648 Hall & Harbour,) will probably be 

 found in Eastern Utah; slender, 1° in height, with filiform leaves and a loose 

 few-flowered panicle ; the membranous glumes obtuse, about 2" long, sub- 

 equal, purplish, and the scarcely shorter hairy palet ending in a bent plumose 

 awn, 6" in length. An easily recognized species. A third plumose-awned 

 Siipa occurs in New Mexico, (981 Fendler,) with long setaceous-acuminate 

 glumes, 2" in length, the palet 6-8" and the awns as many inches long. This 

 has been considered by Prof Thurber a variety of 8. pennata, L. 



Aristida puepueea, Nutt. Steud. Gram. 134. Perennial; culms 6-15' 

 high, simple, erect, slender, mostly glabrous ; sheaths narrow, scabrous, ex- 

 ceeding the internodes, pilose at the throat ; leaves very narrow, convolute, 

 ^10' long ; panicle slender, erect or flaccid, 3-6' long, loosely few-flowered ; 

 glumes purplish, the lower 6-9" long, about twice exceeding the lower, and 

 longer than the flower, bifid and shortly awned ; flower densely short-pilose 

 at the pointed base, scabrous above, 6" long, the awns equal or nearly so, 

 separate to the base, not jointed, 1-2" long, scabrous. — From Western Texas 

 and New Mexico to Arkansas and Colorado ; Arizona. Antelope Island in 

 Salt Lake, and on foot-hills near Salt Lake City ; May, June. A. Fendleri- 

 ana, Steud., is the same, and perhaps also his A. longiseta, judging from the 

 description. (1,297.) 



Spaetina geacilis, Trin. Steud. Gram. 214. Culms 1-3° high, exceed- 

 ing the spreading distichous leaves, which are very rough upon the margins, 

 mostly convolute, the upper ones distant and shorter ; ligules ciliate ; spikes 

 4-10, oblong, mostly sessile, appressed to the nearly smooth rachis ; glumes 

 very unequal, the lower acuminate, the upper acute and equaling the obtusish 

 palets, 4" long, the glumes and lower palet ciliate-hispid upon the keel. — 

 Texas and Colorado. Frequent in alkaline meadows throughout Nevada ; 

 4-6,000 feet altitude ; June-October. (1,298.) 



Pleueaphis^ Jamesii, Torr. Steud. Gram. 218. Roots perennial, 



' PLEUEAPHIS, TOEK. Flowers spioate, the spikelets sessile by threes at each joint of the rachis, 

 surrounded at base by an involucre of soft spreading hairs, the lateral ones staminate, the central per- 

 fect. Glumes of the perfect spikelets 2, 1-flowered, equal, narrow-cuneate, deeply 2-cleft, 3-5-bristled ; 

 palets membranous, the lower short-awned at the apex. Glumes of the sterEe spikelets 2, 2-flowered, 

 lanceolate, ineq^uilateral, the lower 1-awned upon the back ; palets membranous, awnless. Stamens 3, 

 with very sliort filaments. Germ ovate ; styles 2, distinct, the elongated stigmas simply plumose. 



