OP ARTS AND SCIENCES. 153 



C. tenuirostris, Olney in Parry's Botan. Obs. in W. Wyoming, 

 Amer. Naturalist, 1874, 24; 

 N. W. Wyoming, Farri/ 284 ; Summit Valley, Sierra Nevada, Cali- 

 fornia, Pringte. South America. 

 Var. ANGUSTiFOLiA, Boott, 111. 115. 



Var. minor, Olney, Bot. King's Rep. 365. 

 Mountains of Colorado and Utah. South America. 



286. Carex subfusca, W. Boott, Bot. Calif, ii. 234. 



Culm two feet and more high, smooth, slender but stiff, longer than 

 the long-pointed narrow leaves : spikes four to six, well defined, small 

 (about three lines long), rusty, aggregated into a small loose naked 

 head a half or three fourths inch long: perigynium very small and 

 thin (a line and a half or less long), densely packed, but the points 

 conspicuous. Distinguished from C. /estiva, var. gracilis, by its rounded 

 and well-defined spikes which are lighter colored, its short and nearly 

 obtuse scales, and its much smaller and abruptly slender beaked 

 perigynium. — Summit Camp, California, Kellogg. 



287. Carex festiva, Dewey, Sill. Journ. xxix. 246. 

 C. oreades, Meyer, Bull. Acad. Brux. ix. part ii. 248. 

 O. Orizabce, Liebm. Mex. Halv. 75. 



C. pinetorum, Liebm. 1. c. 

 From Colorado westward and high northward, and southward to 

 Mexico. Variable. N. Europe. 



Var. Haydeniana, W. Boott, Bot. Calif, ii. 234. 

 G. Haydeniana, Olney, Bot. King's Rep. 366. 

 Mountains from Utah northward. 



Var. GRACILIS, Olney, Proc. Am. Acad. 1872, 407. 



Very slender, often two feet or more high, the spikes small and 

 mostly indistinct and either somewhat scattered or loosely aggregated. 

 As at present received, it probably includes more than one variety or 

 species. — California, in the Sierras. 



288. Carex athrostachta, Olney, Proc. Am. Acad. vii. 393. 

 Colorado and Montana to California and Oregon ; British America. 



289. Carex sychnocephala, Carey, Sill. Journ. 2d ser. iv. 24. 

 G. cyperoides, Dewey, Sill. Journ. iii. 171, not Linn. 



Central New York to Canada, and westward to the Great Plains of 

 British America. Rare. 



