ORDER 155. CYPERACE.E. 753 



N. Eng. and N. Y. Common in wet places. (C, spbajrostachya Dew., Ed. 2. 

 C. canescens (1. vitilis, Carey. C. vitflis Fries., &c.) 



34 C. Deweyana Schk, (B> t, 69.) Spikelets about 3, sessil;, ovate-lanceolate, 

 alternate, subremote, highest bracteate ; psrig. oblong-lanceolate, rostrate, acumi- " 

 nate, bifurcate, plano-convex, slightly scabrous on the margin, a little longer than 

 the ovate'lanceolate, awned, hyaline glume ; st* 1 4f long, subprocumbent, with 

 radical leaves ; whole plant yellowish-green. Common in opeu woods or on the 

 borders of woods. 



35 C. trisperma Dew, (B. t. 78.) Spikelets about 3, remote, sessile, alternate, 

 highest ebracteate ; perig. ovate-oblong, acute or short*rostrate, plano-convex, at 

 the orifica entire, nerved, subscabrous on the edges, somewhat diverging, longer 

 than the oblong, acute, and hyaline glume; st. 1024' high, prostrate or recurved, 

 filiform, slender, longer than the leaves. -In tufts, in marshes or wet woods ; 

 common in N\ Eng. and N> Y. 



36 C. argyr^iitlia Tuckm. M S. Spike compounded of fpikelets 5 to 8, roundish^ 

 obovate. alternate, subaggregated above, rounded below, with squarrous bracts, 

 except the lowest, which has a long, leafy point ; perig. ovate, compressed, at 

 length spreading, green, many-veined both sides, and winged ly a wide margin, 

 lacerated above, glabrous, acuminate in a short, bifid beak, equaling the membran 

 ous, white, lanceolate, acute glume. Amherst and Sunderland, Mass. (Tucker- 

 man.) Culm 1 to 3f high, Weak, obtuse*anglod, twice longer than the lance-lin> 

 ear leaves. 



37 C. tenuiflora "Wahl. Spikelets '2 3, ovate, clustered, sessile, alternate, 

 lower one bracteate; perig* ovate-oolong, acutish, plano*eonvex, equaling tho 

 oblong-ovate, hyaline or white glume ; st. a foot or more high, slender, subpros- 

 trate, longer than the flat and narrow* leaves. Light green. Spikelets whitish, 

 Burlington and Salem, Vt., in swamps (Robbins), Oriskany and Ogdensburg, N. 

 Y. (Kneiskern), Southampton, Mass. (Chapman). 



38 C. Liddoni Boott. (Illus, 51.) Spikelet-s 5 -7, oblong-ovate, closely aggre- 

 gated ; pet 'ig. ovate^ lanceolate, acuminate, oblique at the orifice, glabrous, margin 

 serrulate, scarcely longer than the ovate-lanceolato glume, which is acute and 

 hyaline on tho edges; perig. and glumes rather chestnut brown ; plant yellowish- 

 green. Brit. Am. (Boott.) Mich. (Cooley). 



39 C. alata Torr. Spike composed of 4 to 8 spikelets, ovate, large, approximate 

 and sessile; perig. roundish, sometimes obovate, nearly flat and close, abruptly 

 abort-beaked, 'A-veined on the back, 2-toothed, broadly winged, finally scabrous on 

 the beak, shorter than the lance-ovate glume ; culm smooth, 3 to 4f high ; Ivs. 

 rough-edged and pale green. -N\ Car. to Fla. 



*0 C. straminea "Wahl. Spike compound, erect ; spikelets about G, ovate, short- 

 oblong, alternate, sessile, subapproximato ; perig. broad, roundish-ovate, com- 

 pressed, ciliate-serrato on the margin, acuminate-beaked, 1-veined on the back, 

 2-toothed, widely winged, commonly shorter than the ovate-lanceolate glume , 

 fit. ] 220' high, longer than the leaves ; spikelets whitish or tawny.- Common 

 in woods and fields. (C. fcstucacea Ell. ? nee Schk.) 



n. BREVIOR Dew. Spikelets 35, often closely approximate, and rnoro 

 nearly round; perig. shorter-ovate and shorter-rostrate, scarcely longer than 

 the ovate-lanceolate glume.- This is tho plant originally described by "Will- 

 denow. 



i3. MINOR Dew. Spikelets small, 5 G, globous or obovate, less approximate ; 

 perig. small, ovate, acuminate, less winged, serrulate, about equaling the 

 ovate, acute glume. 



41 C. foenea Muhl. Spike compound, 5 to 10 ovate spikelets, aggregated above; 

 perig ovate-acuminate, winged, scabrous-margined, largo and close, 2-toothed, 

 about equal to tho oblong-lanceolate glumo ; culm large and smooth, leafy below j 

 plant glaucous, Penn. (iluhlenberg) and salt marshes, R. I. (Olney), 



42 C. mirabilis Dew, Spikelets 711. ovate-globvus. alternate, sessile, often 

 closely aggregated into a lance~ovoid head, bracteate below ; perig, ovate, sublan* 

 ceolate, scabrous on the margin, concave-convex, rostrate, 2-toothed, subdiverg- 

 ing, scarcely twico longer than tho ovate, lanceolate glumo ; st. 18 30'. erect, 



43 



