452 OYPERAQE^S. [CAEEX. 



15. C. remo'ta, L. ; slender, leaves narrow, bracts long, spikelets ob- 

 long, perigynia erect narrow-ovoid plano-convex striate exceeding the 

 oblong-ovate acuminate glumes, beak broad and margins above serrulate. 

 Copses, from Argyll and Koss southd. ; ascends to 1,000 ft. ; Ireland ; Chan- 

 nel Islands; fl. June. Tufted; branches spreading Stem 1-2 ft., inclined, 

 3-gonous. Leaves T V~g in. broad, equalling the stems, flat. Spike 2-5 in., 

 rachis scabrid ; lower bracts often very long. Spikelets 3-9. Glumes pale 

 brown, midrib broad green, margins white scarious. Perigynia pale, 

 narrowed below. Nut plano-convex, narrowed. DISTRIB. Europe, N. 

 Africa, N". Asia, Himalaya, N. America. C. tenel'la, Sm., not Schk,, is a 

 starved form. C, axilla'ris. Good. (? a hybrid with murica'ta), has taller 

 stouter 3-quetrous stems, shorter bracts, larger spikelets, the lower crowded 

 and compound, and broader rigid glumes. Marshes, from York southd. ; 

 Ireland. O. Bcenninyhausenia'na, Weihe (? a hybrid with panicula'ta), has 

 slender 3-quetrous scabrid stems, long spikes, no bracts, small spikelets, pale 

 membranous! glumes, and perigynia serrulate below the middle. Marshes, 

 from Banff southd. 



**** Spikelets male at the base, or both at the top and base, in a compact head or 

 spike. Bracts or subulate (except (7. lepori'na). 



16. C. lepori'na, L. ; stout, leaves narrow, spike lobed compact, peri- 

 gynia elliptic-ovoid plano-convex striate equalling the lanceolate acute 

 glumes, margins winged and long 2-fid beak serrulate. C. ova' Us, Good. 

 Wet places, N. to Shetland ; ascends to 1,700 ft. in the Lake District ; Ireland ; 



Channel Islands; fl. June. Rootstock tufted; stolons 0. Stem* 6-12 in., 

 3-quetrous, slightly scabrid above. Leaves shorter than the stem, flat T V~| 

 in. broad, points fine. Spike f-1 in., often as broad, pale brown, compressed ; 

 spikelets male at the base only; bracts 0, or subulate (C. argyrolo'chin, 

 Lond. Cat. 1867, not Hornem.). Glumes pale brown, midrib green, edges 

 whitish, acuminate or cuspidate. Perigynia sessile. Nut stipitate, oblong, 

 lenticular, shining. DISTRTB. Europe (Arctic), N. and "W. Asia, Rocky Mts. 



17. C. canes cens, L. ; slender, leaves narrow, spike interrupted, 

 bract or minute, perigynia elliptic-ovoid plano-convex ribbed equalling 

 the ovate acute pale glumes, beak short 2-fid serrulate. C. cur'ta, Good. 

 Bogs and marshes, from Isla and Elgin southd. ; ascends to nearly 2,200 ft. in 



the Highlands ; Ireland ; fl. June-July. Rootstock tufted ; stolons 0. Stems 

 12-18 in., 3-quetrous, longer than the leaves, hardly scabrid above. Leaves 

 flat, yV-f in. broad. Spike f-l| in., slender ; spikelets 3-8, ovoid, male at 

 the base only ; bracts 0, rarely 1, subulate. Glumes very pale, edges broad 

 scarious. Perigynia erect, pale olive, not winged, ribs slender, beak obscure. 

 Nut ovoid or obovoid, lenticular, pale. DISTRIB. Europe (Arctic) (excl. 

 Spain, Greece, Turkey), N. Asia, N. America, S. Chili. 



VAR. C. alpic'ola, WahL (C. vit'ilis, Fries; C. Persoo'nii, Sieb.), has spikelets 

 fewer, few-fld., glumes browner, beak deeply 2-fid in fruit. N. Wales, 

 York to Ross, rare, ascends to 3,600 ft. 



18. C. lagopi'na, Wahl. ; stem wiry, leaves flat, spikelets 2-4 small 

 crowded, bracts minute, perigynia elliptic-ovoid biconvex ribbed exceeding 

 the ovate acute glumes, beak short 2-fid. C. lepori'na, L. in part. 



