CAEEX. 457 



bifid finely serrate, nut ovoid or oval with a beak constricted at 

 the base, gl. mucronate shorter than the fruit, st. triquetrous 

 with rough angles, bracts setaceous. E. B. 307. Schk. C. 10. 

 R. 217, Height 2 feet. St. firm. L. broad. Fr. palish green. 

 Spikelets greenish, bracts long, in shady places. R. 216. 

 [C. nemorosa (Lumn.) is a form with longer interrupted spikes, long 

 bracts and paler more cuspidate glumes.] Wet places. P. VI. 



E. S. I. 



12. C. muricdta (L.) ; spikelets contiguous, spike oblong dense, 

 fr. ovoid-acuminate plane-convex obscurely veined birid finely 

 serrate tipper spreading, nut ovoid its beak extremely short, gl. 

 mucronate shorter than the fruit, st. triquetrous with rough 

 angles. E. B. 1097. JR. 215. Height 12 feet. St. slender 

 but strong. L. narrow. Lowermost spikelets not more then 

 their own length distant from each other. Fr. much larger 

 than that of Sp. 13, with a broad flat beak with very sharp 

 edges. /3. virens (Koch). Spikes interrupted below [gl. shorter 

 and broader, paler and greener]. C. muricata (Hoppe). Gravelly 

 pastures. P. VI. E. S. 1. 



13. C. divul'sa (Stokes) ; spikelets distant the upper ones nearer 

 together, fr. ovoid acute plane-convex obscurely veined bifid 

 smooth ascending, beak roughish at the edges, nut ovoid-oblong 

 compressed its beak extremely short, gl. mucronate shorter than 

 the fruit, st. triquetrous with rough angles above, bracts seta- 

 ceous. J B. 629. Schk. Dd. & Ww. 89. H. a. 16. R. 220. 

 Height 1 2 feet. St. lax, slender, flaccid. Spikelets greyish, 

 usually distant, 1 or 2 lowest often lengthened into a short 

 branch. Fr. with a thick green margin slightly rough near the 

 top. Moist shady places. P. VI. E. L 



JtJ Ccespitose. Spike compound , often panicled. Fr. ascending, 

 gibbous on its back. 



14. C. teretius' cula (Good.) ; spikelets forming a dense compound 

 oblong spike, fr. ovate with 2 5 central ribs on the convex side 

 (back), beak bidentate serrulate split to its base and overlapping 

 on the back, nut turbinate with a very short beak convex, style 

 not thickened at the base, st. trigonous and rough above. 

 E.B.lOQo. Schk. V. 19. T.69. Jff.a.9. R. 222. Boot forming 

 scattered simple tufts. St. 1 2 feet high, slender. /3. C. Ehr- 

 hartiana (Hoppe) ; root more csespitose, spike locg rather loose, 

 st. triquetrous above. Si/. E. B. 1620. Boggy meadows, rare. 

 )3 near Manchester [etc.]. P. VI. E. S. I. 



[C. vulpinoidea (Mich.) [spikes numerous very dense small-flowered. 

 A N. American species]. Kew. An escape.] 



X 



