236 CVrERACE.K. Canr. 



— Car. fig. 104; Boott, 111. i. 47, t. 125, 120. C. dlspenna, Dewey, Am. Juuin. 

 Sci. viii. 2GG. C. gracilis, CJray, same, 2 ser. iv. 19. 



In the Sierra Nevada, Dutterlly Valley {Lcmvion) ; Oregon {DoiKjlas, Scoulcr) ; from Arctic 

 America to the northern Atlantic States, New Jlexico ami Utah; also in northern Enroiie. 



H- -t- Spikelcts male at bottom. 



25. C. Canescens, Limi. Stolonilurou^i : stem weak, a foot or two high : leaves 

 flat, I to 1| lines broad, aeuminate, the U|)[)er eiiualliug or exceeding the stem : 

 spiko [)alc or glaneons, 10 lines to 5 inches long, of from 3 to 10 densely ilowered 

 ellipsoidal or oliovoid .spikelets 2 to 7 lines long and \\ lines thick, approximate or 

 remote, or the up{)er contiguons and the lower remote, the uppermost tapering to the 

 base and the lowest rarely compound, naked or the lowest subtended Ijy a narrow 

 bract that rarely surpasses the stem ; scales membranous, hyaline, white or fulvous 

 Avith prominent green keels, the male lanceolate, tin; female ovate or ovate-lanceolate, 

 obtuse or acute or nmcronnlate : perigynium oval or ovate, abruptly termiiuited by 

 a very short in;arly entire beak, short-stipitate, jdano-convex, many-nerved, granular, 

 scabrous on the upper margins, spongy at l)ase, Cipialling or longer than the scale : 

 nutlet oval or obovate, lenticular, nearly as long as the perigynium. — Fl. Dan. 

 t. 285; Eeichenb. 1. c, t. 200 ; Boott, 111. iv. 154, t. 490. G. curta, Good. ; Eng. 

 Bot. t. 1308; Schk. Car. 53, Ug. 13. 



At Clark's Ranch on the Merced, Toncij, n. .^)48. From Antic America to the northern Atlan- 

 tic States, and rarely in tlie Ifocky Monntains to Colorado ; also in the Andes from Chili to 

 the Straits of Maj^'cllan, and in liurope and nortiiern Asia. 



26. C. De"weyana, Schwein. Cespitose : stem ^ to 4 feet long, sharjily angled, 

 scabrous, slender, weak and often decumbent : leaves flaccid, I or 2 lines broad, 

 shorter than the stem : lowest bract setaceous, seldom exceeding the stem, the upper 

 shorter or scale-like : spikelets 3 to 0, whitish-green becoming yellowish, ellipsoidal, 

 loosely few-flowered, sparingly male at base (rarely some wholly male, or male at 

 top and bottom, or wholly female), the upi)er contiguous, the lower one or two 

 remote; scales ovate or lancciolate, acute, miu'.ronate, white-iiyaline, st)mewhat 3- 

 nerved : perigynium very thin, oblong-lanceolate, acuminate to a rough serrate 

 margined bitlentate beak, spongy at base, plano-convex, ob.soletely nerved, longer 

 than the scale : nutlet closely invested by the iierigynium, oblong-ovate, prodmied 

 at base, lenticular, chestnut-colored, shining: style enlarged at base. — Ann. Lye. 

 K York, i. 62 ; Boott, 111. i. 27, t. 70. 



Var. Bolanderi. Stem stouter and leaves broader : spikelets 5 or 6, or rarely 4 

 to 10, and with nu)re numerous (10 to 30) flowers; the scales hispid-awneil. - C. 

 Bolanderi, Olney, Proc. Amer. Acad. vii. 393. 



In Najia Valley (Tharbnr, lUijihw), on shady liillsides. From Arctic America to the northern 

 Atlantic States, and in the llo'cky Monntains to New Mexico ; on the Fraser Www {Lyall) and 

 Colnmbia River, Scoulcr. The variety is rather frciinent in the Sierra Nevada from the Yosenute 

 Valley northward to the Columbia ; also found near Caklaml, JJulandcr, n. '2± 



27. C. Sterilis, AVilld. Cespitose : stem 9 to 22 inches high, scabrotis : leaves 

 ^ to 1 line broad, often involute : spikelets 4 to 8, male or rarely female or more 

 commonly an<lrogynous (male at either or both ends), or the upper male and the 

 others female or androgynous (sparingly male at base), the male elliiisoidal and 

 female spherical, mostly contiguous or the lowest subremote, naked or the lowest 

 setaceously bracted and very rarely compound : i)erigynium at maturity olive-colored 

 or ferruginous, ovate, tapering from a sliarply margined cordate base to an acutely 

 bidentate beak, compressed, nerved, serrate on the upper margins, divergent or re- 

 curved, about equalling the ovate acute or cuspidate chestnut-colored liyaline-mar- 

 giiied scale : nutlet suborliicular, lenticular, jiroduced ut bas(!, yellowisli, apicidate 

 with the enlarged base of the .style. — Schk. Car. fig. 140; lioott. 111. i. 55, t. 140. 



Swamjis near Mendocino City (Bolaiuler, n. 47;il), G193) ; eastward, from Canada to Texaa. 



