c\LAMAGROSTis GRAMINEiE 731 



slightlj? hiapid near the nodes, 2-2)^ feet high: sheaths hispidujous or 

 nearly Smooth, much shorter than the internodes : ligules 2 lines long, 

 lacerate or fimhriolate at the obtuse apex : radical leaves nearly as long as 

 the stems, those of the stem 3-8 inches long, the uppermost shorter, all 

 less than B lines wide: panicle narrow and spike-like, dense, 3-5 inches 

 long, its branches appressed: empty glumes lanceolate, acute, smooth, 

 purple at the apex or throughout, 2 lines long, the lower one carinate, 

 1-nerved, the second convex, distinct, 3-nerved: flowering glume oblong, 

 erose at the Obtuse apex, smooth, 4-nerved, IJ^ lines long: awn attached 

 J^ way from the base, 2-4 lines long : basal hairs scanty and short : palet 

 oblong, as long as the glume. In the high mountains, California to Alaska 

 and Greenland. 



C. Vaseyi Seal Grasses N. Am. ii, 344. Stems densely cespitose, 2-3 

 feet high, erect: ^heaths shorter than the internodes : ligules about 1 line 

 long, ciliate at the obtuse apex : leaves flat, rather rigid, 4-10 inches long, 

 1-2 lines wide : 'panicle 3-4 inches long, narrow and spike-like, often inter- 

 rupted : empty flumes about 2 lines long, lanceolate, very acute or acum- 

 inate, rough on the keel : fioweting glume IJg lines long, 2-toothed at the 

 apex : awn nearly straight, 1-2 lines long, attached below the middle : 

 basal hairs short and rather .scanty ; palet linear-oblong, as long as the 

 glume. In the motintains of Oregon and Washington. 



C. Tweedyi ScMbn. Vasey Mon. Grasses U. S. 83. A closely tufted 

 stoloniferous perenhial: stems erect, smooth, stout, 30-40 inches high: 

 sheaths rather loosfe, smooth or slightly scabrous, shorter than the inter- 

 nodes: ligules thin, 2-4 lines long: leaves flat, hispid, 1-10 inches long, 3-5 

 lines wide : panicle close and spike-like, 3-4 inches long, the branches an 

 inch long or less, appressed, unequal : empty glumes lanceolate, acute, 

 nearly smooth, about 3 lines long, the first 1-nerved, slightly carinate, the 

 second 3-nerved, convex: flowering glume ovate-oblong unequally toothed 

 at the rounded apex 4-nerved 2j| lines long : awn attached ^ way from 

 the base, twisted and bent, 3-4 lines long : basal hairs short and unequal : 

 palet lance-oblong, obtuse, smooth. In the Cascade Mountains of Wash. 



C. Aleutica Bong. Veg. Sitcha 171. A densely cespitose perennial: 

 stems erect, smooth, 2-5 feet- high : sheaths loose, slightly rqugheaed, 

 usually shorter than .the internodes: ligules ovate, nearly 2 lines long : 

 leaves'flat, or loosely involute, with long attenuate points, hispid on both 

 sides, 10-20 inches long : panicle rather narrow, 6-2u inches long, its bran- 

 ches unequal, crowded in ]0-15 clusters, the longer ones 1-3 inches long: 

 empty flumes narrowly lanceolate, acute, hispid on the nerves, the first 

 one carinate, 1-nerved, 2)^-3 lines long, the second convex, 3-nerved, J^ 

 line shorter: flowering glume oblong, obtusely 2-lobed at the apex, thin, 

 hispidulous, 2 lines long: basal hairs half as long as the glume: awn at- 

 tached below the middle, not equalling the glume: palet oblong, irregu- 

 larly toothed or fringed at the obtuse apex. In wet places near the coast, 

 California to Alaska. 



C. rnbescens Buckl. Proc. Phila. Acad. 1863, 92. More or less purp- 

 lish throughout: stems tufted, slender, erect, 30-40 inches high, from 

 stout perennial rootstocks : sheaths^alf as long as the Internodes : ligules 

 1 J^-2 lines long, lacerate at the acute apex : leaves of sterile shoots numer- 

 ous, involute, setaceous, glaucous, scabrous, 5-10 inches long, 1)^-2 lines 

 wide, those of the stem 3-4, 2-7 inches long, usually with some woolly 

 hairs at the base of the blade : panicle strict, dense, interrupted, 3,^5 inches 

 long, its short branches densely flowered to the base : empty glumes ovate- 

 lanceolate, rough, acute, the flrst 1-nerved, the second 3-nerved : flowering 

 glumes a little shorter, narrowly elliptical, acute, 2-toothed at the apex, 

 the stiff twisted and bent awn arising a little below the middle and equal- 

 ling the glume : basal hairs in 2 tufts, less than half as long as the glume. 

 Oregon to California. 



