44 THE GENUS CAREX IN CALIFORNIA 



Co., Davy 32G7; Dewitts, Lassen Co., Davy 3298; Echo, Snowy Cascade and Mrs. Watson's, El Dorado 

 Co., Brainerd; Donner Lake, Heller 6915; San Bernardino Mts., Parish 1573, 3271; Siskiyou Co., 

 Butler 854; Big Trees, Calaveras Co., Brewer 2311; Medicine Lake, Goldsmith 32; Ebbetts Pass, Brewer 

 2013 (in part); East Hot Spgs., Dudley; Kaweah Meadow, Tulare Co., Dudley 2213; Kaweah Peaks, 

 Dudley 2081; Kern River, Dudley 685; Sherwood Valley, Mendocino Co., Dudley; Mt. Eddy, Siskiyou 

 Co., Copeland 3866; Silver Valley, Brewer 1964 (in part); Big Trees, Calaveras Co., Hillebrand 2311; 

 Whitney Meadows, Coville & Funston 1615. 



Refs.: Carex athrostachya Olnev, Proc. Am. Acad. 7: 393 (1868); W. Boott in S. Wats. 

 Bot. Cal. 2: 234 (1880); Parish, Bull. S. Cal. Acad. 5: 54 (1906). C. tenuirostris Olney, Am. Nat. 8: 

 214 (1874), type from northern Wyoming, Parry 284. "C. Bonplandii Kunth." Bailey, Proc. Am. 

 Acad. 22: 152 (1886) in part. C. macloviana D'fjrv. var. pachystachya Bailey, f. involucrata Ktik. in 

 Engler, Pflzr. 4 20 : 197 (1909), type from Montana, Rudberg 3041. C. athrostachya Olney var. minor 

 Olney, S. Wats. Bot. King 367 (1871), type from California. 



In the original description of Carex athrostachya specimens are cited as follows: "California, 

 Yosemite Valley, June 17, Brewer 1650; Hillebrand 2311, a var.; Bolander 6213; Silver Valley, alt. 

 7400 feet, Brewer, a variety." The specimens characterized as representing a variety are small plants 

 similar to the type specimens of Carex tenuirostris Olney. 



43. C. festivella Mackenzie. Culms slender, annual, 3-10 dm. high, smooth 

 or roughened beneath the head; leaf-blades 2-6 mm. wide; spikes 5-20, densely 

 aggregated into a suborbicular to oblong-ovoid head, 12-25 mm. long, 10-1S mm. 

 wide, the spikes ovoid, 5-12 mm. long, 4-8 mm. wide; bracts inconspicuous; scales 

 ovate, obtuse to acutish, dark chestnut to brownish-black with light midvein; 

 perigynia 15-30 to' a spike, appressed, 3.75-5 mm. long, 1.5-2 mm. wide, straw-colored 

 or light brownish at maturity, winged, lightly nerved ventrally, tapering into a 

 serrulate, shallowly bidentate beak }/$ the length of the whole. 



Type Locality: Albany Co., Wyoming (Nelson 3275). 



Mountains, Alberta to Wyoming, west to Washington and California, where 

 it is confined to the Sierra Nevada (from Tulare Co. to El Dorado Co.) and to the 

 White Mts. 



Locs.: Meisner's Meadows, Brians and Strawberry Creek, El Dorado Co., Brained 222, 223, 

 226 (in part); Kaweah River, Dudley 1413; Kaweah Meadow, Dudley 2208; Sonora Pass, Brewer 1864; 

 Ebbetts Pass, Brewer 2012; Sierra Nevada, Lemmon; White Mts., Jepson 7372. 



Ref.: Carex festivella Mackenzie, Bull. Torr. Club 42: 609 (1915). 



44. C. nubicola Mackenzie. Densely cespitose, the culms 1-3.5 dm. high, 

 erect or recurved; leaf-blades 2-3 mm. wide; head ovoid or globular, 12-18 mm. long, 

 9-18 mm. wide, containing 4-7 densely aggregated ovoid or subglobose spikes 5-9 

 mm. long, 4.5-8 mm. wide, each with 15-35 ascending perigynia with spreading 

 beaks; bracts inconspicuous; scales ovate, acute, blackish, much exceeded by peri- 

 gynia; perigynia ovate, very flat, strongly winged, 4.5-5.5 mm. long, 2-2.75 mm. 

 wide, weakly nerved, dark tinged, rounded at base, abruptly contracted into a 

 serrulate bidentulate beak Yi length of body. 



Type Locality: Pagosa Peak, Colorado (Baker 232). 



Summits of high mountains, Alberta and Oregon south to Colorado, Nevada 

 and California, where there is only one known locality. 



Loc: Mt. Dana, Bolander 5074. 



Refs.: Carex nubicola Mackenzie, Bull. Torr. Club 36: 480 (1909). C. Haydeniana Olnev, 

 S. Wats. Rot. King 366 (1871), (not C. Haydenii Dewey 1854), tvpe from Uinta Mts., eastern Utah. 

 C. festiva Dewey var. Haydeniana W. Boott in S. Wats. Bot. Cal. 2: 234 (1880). C. /estiva Dewey 

 var decumbens Holm, Am. Jour. Sci. (4) 16: 20, 26 (1903), type from Pagosa Peak, Colorado, Baker 

 232. C. macloviana D'Urv. var. Haydeniana "W. Boott" ex. Ktik. in Engler, Pflzr. 42o : 196 (1909). 



45. C. pachystachya Cham. Cespitose, the culms rather slender, 3-8 dm. 

 high, nearly smooth; leaf -blades 2-4 mm. wide; spikes 4-8, densely aggregated or 

 more or le?s separate, ovoid or suborbicular, 5-8 mm. long, 4-6 mm. wide, with 10- 

 30 at length spreading perigynia; scales ovate, dark reddish with very narrow hya- 

 line margins; perigynia ovate, 3.5-4 mm. long, 1.5-2.25 mm. wide, olive brown, 

 strongly plano-convex, the walls submembranaceous, nerveless ventrally, rounded 

 at base, contracted into an obliquely cut dark-tipped beak 14 length of body, terete 

 and nearly smooth at apex. 



