432 MONOCOTYLEDONOUS PLANTS. 



above and below ;) fruit erect, lanceolate acuminate, scabrous, nerved, 

 bifid, longer than the ovate-lanceolate glume. 



HAB. Bogs. N. S. ; common. May. It. Culm 12 18 inches 

 high, slender and scabrous. Spikes subdistichous, half an inch 

 long. 



9. C. retroflexa Muhl. : spikes about 4, subapproximate, ovate, the 

 lowest one with a short bract ; fruit ovate-lanceolate, bidentate, sca- 

 brous on the margin, spreading and reflexed, as long as the ovate acute 

 glume. 



HAB. Meadows, &c. N. S. May. U CnJ,m 812 inches 

 high, nearly C-sided. Spikes 3 5, rarely 9 ; the lower one dis- 

 tant. 



10. C. rosca Schk. : spikes 4 6, remote, about 9-flowered, the low- 

 est one with a setaceous bract overtopping the culm ; fruit ovate, acu- 

 minate, diverging and radiate, scabrous on the distinct margin, twice 

 as long as the ovate obtuse glume. 



HAB. Moist woods. N. S. ; common. May. It. Culm a foot 

 high. Spikes 3 6, yellowish-green ; lower ones distant. 



11. C. disperma Dew. : spikes about 3, rather remote, mostly 2- 

 flowered, somewhat erect, the lowest one bracteate ; fruit ovate, rather 

 obtuse, nerved, plano-convex, smooth, with a scabrous margin, entire 

 at the point, twice as long as the ovate, obtuse submucronate glume. 



HAB. Mountain woods. N. Y. Mass. May, June. 11. Culm 

 6 12 inches high. Fruit small. Var. tctrasperma has the fer- 

 tile spikes 34 flowered. 



12. C. muldcribergii Schk. : spikes about 5, ovate, crowded at the 

 summit of the culm, bracteate at the base ; fruit broad-ovate, com- 

 pressed, nerved, bifid, somewhat diverging, scabrous on the margin, 

 rather shorter than the ovate mucronate glume. 



HAB. Rocky woods. N. Y. S. Car. May. U.Culm 1 '2 

 feet high, thick. Plant dark green.- 



13. C. stipata Muhl. : spike compound, oblong ; spikelets numerous. 

 (10 15,) oblong, aggregated, bracteate; bracts a little longer than 

 the spikelets ; fruit lanceolate, subterete and smooth below, spreading, 

 bidentate at the point, which is scabrous, twice as long as the glume. 



HAB. Wet meadows. Throughout the U. S. April, May. It. 

 Culm 1 3 feet high, thick and succulent, smooth. frpikc 

 consisting of many crowded spikelets. 



14. C. spar ganioides Muhl. : spikelets about 8, many-flowered; up- 

 per ones approximate, lower ones subdistant, bracteate ; fruit ovate, 

 compressed, acuminate, bifid, diverging, scabrous on the margin, twice 

 as long as the ovate mucronate glume. 



HAB. Wet meadows. Throughout the U. S. ; rather rare. May. 

 2t. Culm 2 feet high. Lower sp&es remote. 



15. C. multiflora Muhl. : spike oblong, decompound, bracteate, in- 

 terrupted ; spikelets glomerate, ovate-oblong, obtuse ; fruit ovate acu- 



