238 CYPERACEAE 



111. C. nudata W. Boott. Culms slender, 3 to 8 dm. high, sharply tri- 

 angular, strongly dark purplish at base ; leaf-blades light green, flat with revolute 

 margins, 2.5 to 3.5 mm. wide, smooth except toward apex, the basal sheaths 

 rounded and hispidulous dorsally ; staminate spike short-peduncled, 1.5 to 3 cm. 

 long ; lateral spikes 3 to 5, sessile or short-peduncled, 1 to 4 cm. long, 6 to 7 mm. 

 wide ; bracts conspicuously bi-auriculate ; scales ovate, or oblong-ovate, obtuse or 

 acutish, blackish with lighter midvein ; perigynia lanceolate or ovate, compressed 

 biconvex, 3 to 4 mm. long, finely 6 to 9-nerved on both faces, membranaceous, 

 greenish straw-color or purplish-black tinged, smooth or slightly granular at 

 apex, the upper portion empty, the beak 0.25 mm. long, entire. 



Rocky beds of streams, 10 to 2000 ft. : Coast Ranges from Santa Clara Co. 

 to Siskiyou Co. ; Sierra Nevada from Calaveras Co. to Shasta Co. North to 

 western Oregon. 



Locs. Coast Eanges: Loma Prieta, Davy 572; Oakland Slough, Bolander 6202; Marin Co., 

 Bolander 2299; Eussian River, Sonoma Co., Bolander 3866; High Valley Creek, Lake Co., 

 Bowman 111; Ukiah, Bolander 3836; Alder Point, Humboldt Co., Tracy 1885; Castle Roek, 

 Sacramento River, Goldsmith 3. Sierra Nevada: Calaveras Big Trees, Dudley; Clinton, 

 Amador Co., Hansen 1658; Stirling, Butte Co., Heller 10818; Burney Falls, Shasta Co., 

 Dudley. 



Ref s. CAEEX NTJDATA W. Boott in Bot. Cal. 2:241 (1880), based on spms. from the Coast 

 Ranges between San Francisco Bay and Ukiah, Bolander 2299, 3836, 4638, 6202. "C. decidua" 

 Boott in Pac, R. Rep. 4:153 (1857). C. angustata W. Boott, l.e. 242 in part, not F. Boott. 



112. C. eurycarpa Holm. Culms 4 to 9 dm. high, sharply triangular, 

 roughened above ; leaf -blades 3 to 4.5 mm. wide, the lower sheaths minutely 

 hispidulous and rounded dorsally; staminate spike peduncled, 3 to 4 cm. long; 

 lateral spikes 3 to 5, 2 to 4 cm. long ; scales lanceolate, short-acuminate, purplish- 

 brown with prominent light midvein; perigynia appressed, 2.75 mm. long, 

 several-nerved on both faces, minutely roughened, greenish or straw-color, the 

 beak 0.5 mm. long, emarginate. 



Boggy meadows, Sierra Nevada from Mariposa Co. to Siskiyou Co. North 

 to Washington. 



Locs. Devils Lake, Mariposa Co., Congdon; Tallac, Brainerd 46; Squaw Valley. Placer 

 Co., L. S. Smith 559; Prattville, Heller $ Kennedy 8784; Sisson, L. E. Smith 691. 



Ref. CAREX EURYCARPA Holm, Am. Jour. Sci. ser. 4, 20:303 (1905), type loe. Falcon 

 Valley, w. Kliekitat Co., Wash., Suksdorf 1284, 2962. 



113. C. oxycarpa Holm. Culms 4.5 to 9 dm. high, sharply triangular, 

 slightly roughened above; leaf -blades 2 to 4 mm. wide, the lower sheaths his- 

 pidulous dorsally; terminal spike staminate, peduncled; lateral spikes 4 or 5, 

 the upper 1 or 2 staminate, the lower 2 to 4 pistillate or androgynous, sessile or 

 short-peduncled, 2.5 to 4.5 cm. long, 5 mm. wide; scales lanceolate, acute, 

 purplish-black with light midvein ; perigynia 3.5 mm. long, 3 to 5-striate on both 

 faces, granular roughened, brownish, abruptly minutely apiculate, the orifice 

 entire. 



Wet meadows, northern Sierra Nevada from Butte Co. to Siskiyou Co. North 

 to Washington and Idaho. 



Locs. Jonesville, Butte Co., Hall 9783; Morgan, Tehama Co., Hall $ Babcock 4347; 

 Sisson, Brainerd. 



Ref. CAREX OXYCARPA Holm, Am. Jour. Sci, ser. 4, 20:303 (1905), type loc. w. Kliekitat 

 Co., Wash., Suksdorf 816. 



Sect. 29. Cryptocarpae Tuckerm. Stoloniferous. Culms aphyllopodie or phyllopodic. Ter- 

 minal 1 to 3 spikes staminate, linear, the others pistillate, linear or oblong, closely many- 

 flowered, the lower or all peduncled and erect or very often pendulous. Bracts sheathless, 

 the upper at least biauriculate at base. Scales 3-nerved, usually cuspidate or aristate, but 

 in some species obtuse. Perigynia coriaceous or membranaceous, piano- or bi-convex or 

 turgid, elliptic to obovate, puncticulate, margined, abruptly minutely beaked or beakless, 

 the orifice entire or nearly so. Achenes lenticular, apieulate, constricted in the middle. 

 Stigmas 2. 



