"754 Order 155.— CYPEP.ACE^E. 



stiff, rough above, rather slender ; plant light green. — Comnftn about fences and 

 bodges, and has a specially rigid appearance. (C. festucacea fi. Torr. Carey.) 



43 C. cristata Schw. Spikekts 6 — 14, globous, sessile, closely aggregated into 

 en oblong, thick head of a crested form, bracteate ; perig. ovate, oblong, compressed, 

 ■winged, rostrate-acuminate, bifid, concavo-convex, scabrous on the margin, longer 

 than the oblong, lanceolate glume ; st. 1 — 3f, acutely triangular. — Plant yellow- 

 ish-green. Common in fields and meadows on colder soils. (C. lagopodioides p. 

 Carey.) 



44 C. lagopodioides Schlc. Spikeleti 8 — 20, leakless, green, ovate, rather 

 near, alternate and sessile ; perig. round-lanceolate, tapering at both ends, concavo- 

 convex, nerved, bidentate, scabrous on the margin, nearly twice as long as tho 

 ovate-lanceolato glume ; st. nearly 2f, leafy ; tho whole light green. — Common. 

 (C. scoparia, [i. Torr.) 



45 C. teiiera Dew. Spike compound, recurved; spikelets about 5, obovate, remotish, 

 alternate, sessile, attenuated below, the lowest bracteate ; fr. tawny, ovate, com- 

 prcs;od, somewhat winged, rostrate, nerved, ciliate-serrate, longer than the ob- 

 long- lanceolato scale ; st. 15 — 30', small and slender, erect, with a nodding spike, 

 longer than the leaves. — Light green. Common. (C. straminea /3. Torr. C. 

 festucacea ji. Carey. The inconsistency of these synonyms favors our own viow 

 of this species.) 



46 C. festucacea Schk. Spike erect; spikelets 5 — S, obovate end dubform, scs- 

 B;le and alternate, approximate, lower one bracteato ; perig. tawny, roundish-ovate, 

 rostrate, winged, striate, 2-toothcd, scabrous on tho margin, longer than the ovate, 

 lanceolate glume ; st. 15 — 30', erect and stiff, leafy below. — Plant pale green. 

 Spikeleti greenish to brown. Common in fields, but not abundant Tho club- 

 form spikelet3 from tho decurront scales of tho $ flowers, especially mark this 

 species. 



47 C. adusta Boott. Spikeleta several, 4 to 3 or more, often not approximate, 

 tapering below in maturity; perig. ovate-lanceolate, or ovate, long-rostrate, nar- 

 row-winged and serrulate, veined, scarcely bifid, as long and broad as the glume; 

 culm 15 to 24', leafy towards tho baso. — R. I. (Olney) to L. Sup. and Brit. Am. 



48 C. scoparia Schk. Spikelets 5 — 10, usually 5 — 7, ovate, sessile, approximate, 

 the lowest with a long, deciduous bract ; perig. ovate-lanceolate, nerved, erect, 

 slightly margined, glabrous, longer than tho lanceolate, acuminate glume; st. 

 IS — 24', leafy towards tho root — Moist places, very common. (C. ovalis Ell.) 



ji. aggbegata Dew. Spikelets aggregated into a head, somewhat spiral. 



49 C. Bychnocephala Carey. Spikelets ovate, closely aggregated into a hea& 

 (as the namo purports), sessile, slender, with long, leafy brads; perig. ovale, very 

 long, lanceolate, or tapering into a long beak, with scabrous edges, a little longer than 

 the lanee-ovats glume; plant short and very pale green. — N. Y., Jefferson Co. 

 (Boott. Ill , 111), at Little Fall3 (Vasey, Kneiskern). Remarkablo for its slender, 

 beaked fruit 



50 C. £rida Schw. and Torr. Spikelets oval-oblong, 5 — 10, somewhat tapering at 

 both ends, large and approximate, close -flowered, dry and chaff-like; perig. lance- 

 linear, compressed, thin, distinctly winged, bidentate, nerved, acuminate, tw-ic* 

 longer than the ovate-lanceolate glume ; plant light green in all its parts. — Com- 

 mon in Ohio and Mich., IS — 3U', and further W. and S. (C. Muskingummcnsia 

 Schw., scoparia, /?. Torr.) 



51 C. miliaria Mx. (B. t. 187.) Culm erect, slender, rough above; lvs. flat, 

 very narrow; $ spiko sessile, sometimes 2 and distant, ovoid, tawny; bract seta* 

 ceous, short; 5 spike pale, rather long-peduncled ; perig. spheroidal, smooth. — 

 Marshes, Can., especially at L. Mistassins. 



52 C Floridana Schw. $ Spiko short and sessile; 2 spikes 2 to 4, approxi- 

 mate, ovate, sessile, bracteate, tho lowest sometimes a little recurved; perig. ob- 

 long, tapering below, rather obovate, plano-convex, abruptly rostrate, short-bifid, 

 scabrous ab wo and on the back, about as long as the ovate-oblong, red-edged, scab- 

 rous, cuspidate glume; culm 2 to C, ehndcr, 3-sidcd; lvs. radical, flat, twice to 

 thrice longer than tho culm ; plant palo green ; ach. oval, lens-shaped. — Fla. to La. 



