CATALOGUE. 
371 
(rarely straw-color,) pale at base, twice as long as the acutely ovate dusty 
scale, whicli is whitisli at the apex and pale-nerved. — No ripe aclienia seen. 
This is C. Grahamii^ Boott, and in my oj^inion quite distinct from C. saxatUis. 
Rocky Mountains of BritisL America, (Drummond.) Shore of a subalpine 
lake in the Uintas, with C. elongata and other species ; 9,500 feet altitude ; 
August. (1,248.) 
Carex aurea, Nutt. Canada to Wisconsin ; Arctic America ; in the 
Rocky Mountains to California. Ruby Valley and East Hundjoldt Mountains, 
Nevada; G-9, 000 feet altitude; July-September. (1,249.) 
Var. ANDROGYNA, Ohicy. Culms short, more rigid ; leaves erect, broader; 
upper spikes more closely aggregated and denser flowered, the upper spike 
generally androgynous, having more or less lertilc flowers at the top. — Penn- 
sylvania, Presque Isle, (A. P. Garber ;) Lake Superior, North Mine, (Agassiz,) 
Thunder Bay, (J. Macoun ;) Rocky Mouiilaiiis of British America, (Drum- 
mond, in Herb. Torr. ;) Colorado, Dudley's Ranch, (E. L. Greene.) Uintas; 
8,000 feet altitude; July. (1,250.) 
Carex Magellanic a. Lam. {C. irrigua, Sm., Grays Man.) New 
England, New York, Pennsylvania, and Wisconsin. On the margin of a sub- 
alpine lake in the Uintas, with C. elongata and other species ; 9,500 feet 
altitude; August. (1,251.) 
Carex atrata, L. Mountains of CaUfoniia and Colorado, (Hall & 
Harbour, 597Yasey.) Uintas, near head of Bear River; 10,000 feet alti- 
tude; August; also found in the Uintas by Hayden, 1870. (1,252.) 
Var. NIGRA, Boott. Collected in Colorado by Hall & Harbour, Vascy, 
(596,) and E. L. Greene— by the latter in a deep swanqi, at 8,000 feet 
altitude. Moist rocky ridges in the East Ilumbohlt Mountains, Nevada, and 
in the Uintas ; 9-11,000 feet altitude ; August. (1,253.) 
Carex Buxbaumii, Walil. From New Enirland and Wisconsin to Arctic 
Amei-ica, southward along the Alleghanics, and in the western nn.nntains to 
Colorado, Texas, (Wright,) and Calironiia. On a su])alpine hike in the 
Uintas, with C. elongata, &c.; 9,500 feet altitude; August. (1,254.) 
Carex frigida. All. Spike elongated, rusiy-black, composed of 4-8 
oldong spikelets, the terminal one staminate and remainder pistillate, the 
upper contiguous and sessile, the lower remote an<l exsrrlly i)edunculate ; 
bracts sheathing, shorter than the culm; sliLnnas prri-ynium triangular, 
lanceolate, tapering to a beak, bifid at the orifice, nerve.l, smooth, hispid on 
