THE GENUS CAREX IN CALIFORNIA 



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94. C. heteroneura W. Boott. (Fig. 39). Densely cespitose, the culms 2.5-5 

 dm. high, slender, smooth or somewhat roughened above; leaf-blades 2-4 mm. wide; 

 spikes about 4, approximate or lower more or less strongly separate, the terminal 

 gynsecandrous (rarely staminate), the lateral pistillate, 



the lower on peduncles J^ their own length, the upper 

 sessile or short-peduncled, oblong, 1-2 cm. long, 5-7 

 mm. wide, closely flowered, with 15-40 appressed- 

 ascending perigynia; lowest bract shorter than to ex- 

 ceeding culms; scales acute, Yi to % width of perigynia, 

 purplish-brown with conspicuous midvein, acute; peri- 

 gynia suborbicular, strongly flattened, 2.5-3.5 mm. long, 

 1.75-2.5 mm. wide, rounded at base and apex, punctic- 

 ulate, not rough, the beak 0.25 mm. long, minutely bi- 

 dentate; achene short stipitate. 



Type Locality: Lake Tahoe to Bear Valley, 

 California, (Kellogg). 



Sierra Nevada at elevations of 7000-11000 feet, 

 from Tulare Co. to Siskiyou Co., and also in the mount- 

 ains of western Nevada. 



Locs.: Tuolumne River or Meadows, Brewer 1773, Bolander 

 1773, 5046 (in part), Jepson 4475, Congdon; Yosemite, Congdon, 

 Dudley, Hitchcock, Hall & Babcock 3457, Bolander 6205 (in part) ; 

 Donner Pass, Torrey 549; Mt. Dana, Bolander 6020 (in part); upper 

 San Joaquin, Congdon; Sierra Nevada, Kellogg & Harford 1080, 

 Bolander 61 ; Silver Valley, Alpine Co., Brewer 1964 (in part) and 1967; 

 Brown Meadow, Tulare Co., Hall & Babcock 5160; Ebbetts Pass, 

 Brewer 1994, 2013 (in part), 2023, 2080; Pyramid Peak, Brewer 

 2145 (in part); Big Trees, Calaveras Co., Hillebrand 2307, 2320, 

 2323 (in part) ; Alta Meadows, Geo. B. Grant; Mt. Whitney, Jepson 

 5053; Lake Tenaya, Brewer 1682, Congdon 93; Hockett Meadow, 

 Culbertson 4386; Ostranders Meadow, Bolander 5015; Westfalls 

 Meadow, Bolander 6205 (in part); Sonora Pass, Tuolumne Co., A. L. 

 Grant 142, 277, 297; Medicine Lake, Siskiyou Co., Goldsmith 28; 

 Sequoia National Park, Davidson 2123; Summit of Sierra Nevada, 

 Kellogg; Wolverton Creek, Kaweah River, Hopping 436; Soda Spgs., 

 Tulare Co., Dudley 1948; Chagoopa Creek, Dudley 2274, 2276, 2278; 

 Hockett Meadow, Dudley 1037; Kaweah River, Dudley 1412; Little 

 Kern River, Dudley 2552; Cone Peak Camp, Dudley; Cabin Meadow, 

 Dudley 3331; Mountain Lake, Dudley 941; Round Meadow, Dudley 

 1058; Funston Meadows, Dudley 2209; Tobias Meadow, Dudley 

 665; Lloyd Mt., Dudley 852; upper Kings River, Fresno Co., Dudley; 

 Slippery Ford, El Dorado Co., Brainerd 90; Snowy Falls, El Dorado 

 Co., Brainerd 87; Lone Pine, M. E. Jones; Truckee, Hitchcock 356 

 (in part); White Mts., Jepson 7345; Bloody Canon, Mono Co., 

 Ware 2715c (in part); Stanislaus Forest, Alpine Co., Eggleston 9501, 

 9567; Kennedy Meadow, A. L. Grant 86; Donner Lake, Greene; 

 Thorps Meadow, Tulare Co., Dudley 3004; San Jacinto Mts., Hasse, 



Davidson, Reed 2498; San Bernardino Mts., Grinnell, Parish 3277; Mt. San Gorgonio, Geo. B. Grant 

 6404. 



Refs.: Carex heteroneura W. Boott in S. Wats. Bot. Cal. 2: 239 (1880). "C. atrata L." 

 and "C. atrata L. var. erecta" W. Boott, 1. c; Kuk., in Engler, Pflzr. 42 o : 399 (1909), type of var. 

 erecta from California, but not otherwise given. C. quadrifido, Bailey, Proc. Cal. Acad. (2) 3: 104 

 (1891), type loc. Mt. Dana, Bolander 5046, and var. lenis Bailey, 1. c. 3: 105 (1891), also based on 

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

 Valley, San Jacinto Mts., California; Parish, Bull. S. Cal. Acad. 4: 82 (1905). C. atrata L. subsp. 

 atratiformis Brit. f. caeca Kuk., in Engler, Pflzr. 4 20 : 400 (1909). 



95. C. albo-nigra Mackenzie. Loosely cespitose from slender creeping 

 rootstocks, the culms 1.5-3 dm. high, slender, smooth or somewhat roughened 

 above, sharply triangular; leaf -blades about 2.5 mm. wide, the sheaths white hyaline 

 ventrally; spikes about 3, closely approximate, the terminal gynsecandrous, the 

 lateral pistillate, sessile or very nearly so, linear-oblong, about 1 cm. long, and 4.5 



Fig. 39. Carex hetero- 

 neura W. Boott. 



o, habit, X 1; 6, scale, X 10; 

 c, perigynium, X 8. 



