704 CYPERACE.E CAREX 



pistillate spikes 1-3, narrowly oblong, 2-6 lines long, 1 line thick, nodding, 

 10-12-flowered: perigynia oblong, 3-angled light green, the slender beak 

 about % as long as the body, longer than the oval, scaiious margined scale. 

 Idaho to Alaska, Greenland and the Atlantic States; also Europe and Asia. 



C. cinnamomea Olney Proc. Am. Acad. vii. 396. Stems slender, 1-2 

 feet high, erect: leaves narrow-margined, shorterj than the stem: bracts 

 sheathing, longer or shorter than the stem: spikes 3-5, erect,- 12-18 inches 

 long, cinnamon colored, the terminal one staminate, fusiform and long pe- 

 duncled, the others pistillate, cylindrical, densely flowered, the upper ap- 

 proximate, the lower on long exserted peduncles, attenuate and loosely flow- 

 ered at base, the lowest remote: scales cinnamon colored with green centre, 

 membranous, ovate, obtuse, ciliate at the apex: perigynia elliptical, 3 angled, 

 green, rostellate with bidentate orifice ciliate within, glabrous, longer and 

 broader than the scale. In marshes, southern Oregon and California. 



TRIBE v SPJROSTACHY^E Drejer Symb. Car. 10. Staminate 

 spikes usually solitary, pistillate spikes 2-5, short yellowish or 

 fuscous, compactly flowered. Perigynia smooth or minutely gran- 

 ulate, rarely somewhat serrate on the margins, prominently 

 nerved, squarrose, mostly beaked, the orifice entire. Stigmas 3. 



C. viridula Mich. Fl. ii, 170^ Glabrous and bright green: Sterna 

 slender, erect, 4-15 inches high: leaves a line or less wide, often longer than 

 the stem: bracts similar, strictly erect and much exceeding the spikes, sea- 

 sile, sometimes pistillate at the top: pistillate spikes 2-5, all approximate and 

 sessile or the lowest distant and short-peduncled, oblong, 2-6 lines long, 2 

 lines or less thick: perigynia ovoid-oblong, a line or less long, narrowed at 

 base, tapering into a 2-toothed beak about half as long as the body, longer 

 than the ovate scale. In wet places, Washington to Alaska, New Foundland 

 and Pennsylvania. 



TRIBE vi DACTYLOSTACHY^E Drejer Symb. Car. 10. Bracts 

 sheathing, the sheaths often conspicuous and colored. Staminate 

 spike mostly one: pistillate spikes short, commonly rather loosely 

 flowered and slender, their scales mostly whitish, often small. 



1 LAXIFLORAE Kunth Enum. PL ii, 452. Slender, more or 

 less broad-leaved species with mostly leafy bracts, green sheaths 

 and loosly flowered spikes. Perigynia mostly conspicuously 3- 

 angled, with a more or lessjcurved beak. 



C. Henderson! Bailey Proc. Am. Acad. xxir. 115. Slender and rather 

 weak, 1-2^ f^et high: leaves thick dnd flaccid) 4-8 lines wide, bhorter thn 

 the stem: bracts with sheaths !-'< inches long: spikes 4-5, pale, the 

 pistillate approximate, on short peduncles, loosely flowered: perigynia 2-3 

 lines long, gradually contracted at each end, longer than the firm hyaline- 

 margined ovate obtuse often mucronate scale. In forests and thickets, 

 Washington to California. 



2 PANAICEJE Tuckerman Enum. Meth. 15. Mostly stouter 

 narrow-leaved species. Perigynia often strongly nerved, not con- 

 spicuously trigonous, often turgid 



C. liYida Willd. Sp. PI. iv, 285. Pale green and very glaucous * 

 Stems slender, strictly erect, smooth, 12-18 inches high: leaves 1-2 lines 

 wide, shorter than or equalling the stem: bracts narrow, usually short: 

 staminate spike solitary, short-peduncled: pistillate spikes 1-3, 5-12 lines 



