366 BOTANY. 



est club-shaped ; bracts sometimes filiform, not equal to tbe spikelets ; stig- 

 mas 2 ; perigynium ovate, gradually tapering to a beak from an ovate base, 

 the orifice obliquely cut, winged, and serrated upon tbe margins above the 

 middle, nerved upon both sides, tav^^ny, quite equaling the ovate-lanceolate 

 acute scale, which is whitish-hyaline with tawny margins ; achenium oblong, 

 lenticular, stipitate, shining, chestnut- colored, apiculate at the base of the 

 style. Root woody-fibrous. — Colorado, at 12,000 feet altitude, (599 and 600 

 Vasey.) Highest peak of the Clover Mountains, Nevada, and in a rocky 

 gorge of the Uintas above the head of Bear River ; 11,000 feet altitude ; 

 August, September. (1,234.) 



Caeex festiva, Dewey. Spike ovate or nearly round, naked or bract- 

 eate, composed of 6-12 nearly round androgynous spikelets, staminate at 

 base, closely aggregated into a head ; stigmas 2 ; perigynium ovate-ellipti- 

 cal, tapering to a beak, the whitish-hyaline orifice obliquely cut anteriorly and 

 finally bidentate, slightly nerved on both sides, winged, serrated on the mar- 

 gins above the middle, rusty-tawny, a little exceeding or about equaling the 

 lanceolate obtuse whitish-hyaline rusty-margined scale ; achenium oblong- 

 obovate, abruptly apiculate, rusty-colored. Csespitose. — From Great Bear 

 Lake to California, Colorado, (589 and 590 Hall & Harbour ; 586 and 587 

 Vasey,) and New Mexico, (882 Fendler.) East and West Humboldt Mount- 

 ains and intervening ranges of Nevada, and in the Wahsatch and Uintas ; 

 5-9,000 feet altitude ; June-August. (1,235.) 



Caeex Haydeniana, Olney. Spike ovate or nearly round, composed of 

 about six spikelets in a dense head staminate at base ; bracts scale-like and 

 cuspidate ; perigynium ovate, tapering to a long beak with an obliquely cut 

 orifice, membranous, compressed, winged, doubly serrate on the margins, 

 faintly and few-nerved at base, yellowish, dark-purple at top or finally through- 

 out, spreading, longer than the ovate acute hyaline-margined scale ; achenium 

 straw-colored, elliptic-lenticular. Root fibrous ; culm 4-8' high ; leaves flat, 

 rough at top, narrow, shorter than the culm. — Allied to C. festiva. Cali- 

 fornia, (5074 Bolander ;) Uinta Mountains, Eastern Utah, (Dr. F. V. Hay- 

 den, 1870.) 



Caeex atheostachya, Olney. Spike ovate, straw-colored, rusty-tinged, 

 composed of 8-20 crowded spikelets, the lowest sometimes forming a re- 

 mote distinct head ; bracts 3-5, leafy, involucre-like, expanded at base into a 

 hyaline margin, the lowest much longer than the culm ; stigmas 2 ; perigyn- 



