234 CYPERACEAE 



Locs. Kaweah Peaks, Dudley 2114; Harrison Pass, Jepson 5039; Mt. Dana, Bolander 

 5072; Sonora Peak, A. L. Grant 522 (in part); Lake Lucille, Hall $ Gliandler 4663; White 

 Mts., Jepson 7395. 



Refs. CAREX HELLERI Mackenzie, Erythea 8:70, fig. 38 (1922), type loe. Mt. Rose, Washoe 

 Co., Nev., Heller 9975. C. atrata L. var. nigra W. Boott in Bot. CaL 2:239 (1880), not F. 

 Boott. 



96. C. epapillosa Mackenzie. Culms 1.5 to 6 dm. high, stiff, sharply tri- 

 angular, smooth; leaf-blades 3 to 8 mm. wide; spikes 3 to 6, approximate or a 

 little separate, sessile or short-peduncled, oblong-ovoid, 1 to 2.5 cm. long, closely 

 flowered; scales lance-ovate, sharp-pointed, narrower than but about equaling 

 or exceeding perigynia ; perigynia broadly oval or obovate, obscurely nerved. 



Mountain meadows, high Sierra Nevada of Tuolumne Co. (Sonora Peak, 

 A. L. Grant 394, 413). Easterly to Wyoming. 



Eef. CAREX EPAPILLOSA Mackenzie in Eydb. Fl. Rocky Mts. 138 (1917), type loc. Marys- 

 vale, Utah, Jones 5345. 



97. C. heteroneura W. Boott. Culms 2.5 to 10 dm. high, slender, smooth 

 or nearly so; leaf -blades 2 to 4 mm. wide; spikes 3 to 6, approximate or lower 

 more or less strongly separate, sessile (the upper) to strongly peduncled (the 

 lower), oblong, 0.7 to 2.5 cm. long, closely flowered with 15 to 40 appressed- 

 ascending perigynia; scales acute, narrower than perigynia; perigynia sub- 

 orbicular, strongly flattened, rounded at base and apex, the beak 0.25 mm. long, 

 minutely bidentate. 



High montane, 7000 to 11,000 ft. : coastal Southern California ; White Mts. ; 

 Sierra Nevada from Tulare Co. to Nevada Co. East to western Nevada. 



Locs. Southern California: San Jacinto Mts., Hasse; Mt. San Gorgonio, Geo. B. Grant 

 6404. White Mts., Jepson 7345. Sierra Nevada: Lone Pine, M. E. Jones; Mt. Whitney, 

 Jepson 5053; upper San Joaquin River, Congdon; Yosemite, Congdon; Tuolumne Mdws., Jep- 

 son 4475; Calaveras Big Trees, Hillebrand 2307; Souora Pass. A. L. Grant 142, 277, 297; 

 Silver Valley, Alpine Co., Brewer 1967; Donner Pass, Torrey 549. 



Refs. CAREX HETERONEURA W. Boott in Bot. Cal. 2:239 (1880), type loe. Lake Tahoe to 

 Bear Valley, Kellogg; Mackenzie, Erythea 8:71, fig. 39 (1922). C. atrata W. Boott I.e. not L. 

 C. atrata L. var. erecta W. Boott I.e.; Kiik. in Engler, Pflzr. 4 20 :399 (1909), type from Cal., 

 but not otherwise given. C. quadrifida Bailey, Proc. Cal. A cad- ser. 2, 3:104 (1891), type loc. 

 Mt. Dana, Bolander 5046, and var. lenis Bailey, I.e. 3:105 (1891), also based on Bolander 

 5046. C. quadrifida Bailey var. caeca Bailey, Bot. Gaz. 21:8 (1896), type from Tahquitz 

 Valley, San Jacinto Mts., Hasse. C. atrata L. subsp. atratiformis Brit. f. caeca Kiik. I.e. 400. 



98. C. albo-nigra Mackenzie. Culms 1 to 3 dm. high; leaf-blades 2.5 to 

 5 mm. wide; spikes usually 3, closely approximate, sessile or very nearly so, 

 linear-oblong, about 1 cm. long, closely flowered with 15 to 20 appressed- 

 ascending perigynia; scales ovate, acutish, purplish-black usually with strongly 

 developed white margins; perigynia obovate, strongly flattened, 3 to 3.5 mm. 

 long, substipitate, abruptly beaked, the beak 0.25 mm. long, minutely bidentate ; 

 achenes narrower than perigynia, short-stipitate. 



Dry mountain sides, high Sierra Nevada in Tulare Co. (Glacier Lake, Dudley 

 1699). East to Arizona and Colorado. 



Ref. CAREX ALBO-NIGRA Mackenzie in Rydb. Fl. Rocky Mts. 137 (1917), type from Needle 

 Mt., Wyo., M. Gary 613. 



99. C. mertensii Prescott. Culms 3 to 10 dm. high, very sharply triangular, 

 rough ; leaf -blades 4 to 7 mm. wide ; spikes 1 to 4 cm. long, the upper approxi- 

 mate, the lower more remote on slender peduncles ; scales lance-ovate, acute ; 

 perigynia appressed, broadly oval, much flattened, purple-spotted, tapering at 

 apex, minutely beaked, the beak 0.5 mm. long, entire ; achenes strongly stipitate. 



Mountains, Trinity Co. (North Fork Coffee Creek, Goldsmith 20). A well 

 marked and handsome species abundant farther north. Extending to Alaska 

 and Montana. 



Ref. CAREX MERTENSH Prescott, Mem. Acad. St. Petersb. ser. 2, 6:168 (1833), type loc. 

 Sitka, Alas. 



