OBDEB 155. CYPE RACEME. 7C5 



glume; culm li" erect; Iva short, flat, both glabrous. Ga, Fla. (C. Chapman:: 

 Sartw.) 



143 C. Richardsonii R. Brown. $ Spike oblong, erect, stalked, with ovate, 

 obtuse, brown, white-bordered glumes; ? spikes 1 to 3, smaller, oblong, lax, the 

 upper near, the lowest more remote, all longer than the broad, membranous, white, 

 obtuse bract; perig. ovate-triquetrous, very obtuse, scarcely beaked, orifice entire, 

 t>elow tapering, pubescent, scarcely equal to the brown, ovate, acute, white- 

 edged glume ; culm 4 to 10', scabrous, longer than the scabrous leaves. Woods, 

 Greece, N. Y. (Bradley), 111. (Mead.), and Arc. Am. A fine species wilh a wide 

 range. 



144 C. dasycarpa Muhl. (B. t, 57.) $ Spiko oblong, erect, subsessile, small; 



2 spikes 2 or 3, short-oblong, alternate, hoary, the lowest remote, bracts longer 

 than the culm ; perig. oblong-ovate, triquetrous, short-beaked, veined, dense-vil- 

 loua, emarginate at orifice, longer than the ovate-acuminate glume ; culm 8 to 14', 

 triquetrous, glabrous, longer than the hairy, narrow-lanceolate Ivs. ; grayish green. 

 Dry fields, N. Car.' to Fla. 



145 C. Michigansis Dew. Terminal spike staminate, oblong-clavate, erect, 

 short stalked ; 2 spikes 1 to 3, rarely 4, oblong-filiform., lax, some or all three 

 stain, at apex, squarrous-bracted, the upper sessile, lower short-stalked ; perig. (too 

 young) oblong-obovate, lance, acute, bifid, some viUous, shorter than the oblong, 

 acute, rusty brown gl. ; culms clustered, 6 to 14', slender, triq., shorter than the 

 linear, stiff, rough-edged Ivs. Mich. (vV"m. Boott, Esq.). 



146 C. Torreyi Tuckm. $ Spiko oblong, short ped. ; $ spikes 2 3, short, oblong, 

 subsessile, erect ; perig. oblong, obovate, very obtuse, glabrous, subtriq. entire at the 

 orifice, subrostrate, twice longer than the acute gl. ; st. 12 18' erect, triq., with 

 subradical and pubescent Ivs. Pale green. N. Y. (Tuckerman.) 



147 C. Crawei Dew. S Spikes 3 6, cyl. short and thick, densely flowered, some- 

 times aggregated, sometimes remote, the lowest often subradical and long-ped. ; 

 perig. ovate, terete, scarcely rostrate, diverging, entire at the orifice, twice longet 

 than the ovate and obtusish gl. ; $ spike with one or two small ones at its base. 

 Jeff. Co., N. Y. It commemorates the name of Dr. Crawe, its discoverer, who 

 was soon after drowned, on a botanical excursion, in Griffin's Bay. 



148 C. ignota Dew. 3 Spike cyl., slender, erect, long-stalked, scale-bract ed, 

 with oblong, obtusish gls. ; 2 spikes 2 or 3, oblong, lax, erect, leafy-bracted, the 

 lowest long-ped.; perig. clliptic-triq., tapering below, conic-rostrate, slender, entire 

 at the orifice or slightly 2 -toothed, recurved more or less, a little longer than the 

 ovate, acute, lane, or cuspidate gl. ; culm 18 to 24', pale green. La. (Hale). 



p. FUSIFORMIS. A smaller form; perig. more spindle-form, and the glume 

 acute, shorter in proportion. Fla. (C. fusiformis Chapman.) 



149 C. scabrata Schw. $ Spike short-stalked ; 2 spikes 3 6, cyl., subrecurved, 

 remotish, long-ped. ; perig. ovate-oblong, subinflated, subbifid, rostrate, quite 

 scabrous, longer than the ovate-lane., acuminate, short-bidentate, ciliate gl. ; culm 

 1 2f, acutely triq., rough, above, longer than the Ivs. towards the base. Bright 

 green. Along brooks and streams, common. N. States, N. Car. (Curtis). 



150 C. sxYbulata MX. $ Spike erect, small, short, with lane., white gl. ; $ spikes 



3 to 5, oblong, 3 to 7-fruited, distant, sessile above, the highest close to the stam- 

 inate, the lower exsert-ped., leafy-bracted, sometimes 3 at apex ; perig. subulate 

 or lance-ovate, long, rostrate, slender, veined, glabrous, with 2 curved teeth di- 

 varicate or reflexed, more than thrice longer than the white, lane, gl ; culm 6 to 

 14 to 24' high, very slender, lax, smooth ; Ivs. smooth, striate, flat, shorter than 

 the culm ; very light green. Can. to N. J., along the coast. 



151 C. pallescens L. 5 Spikes 23, oblong, short, cyl., distant, yellowish 

 green, nodding towards maturity ; perig. oval, obtuse, round, about equal to, or a 

 little shorter than, the ovate, pale gl ; st. G 16', hardly erect; bracts sometimes 

 transversely rugous. Plant often subpubesceut, and of a light green. In dry 

 meadows. Common. C. undulata Kunze, is admitted by Kunze himself to be 

 only var., differing chiefly in its wavy, lowest bract. 



152 C. limosa L. 2 Spikes 1 3, ovate or oblong, long-ped., subloose-flowered, 

 sinocthish, pendulous ; perig. elliptic, compressed, very short-rostrate, entire at 



