t^ 



f!0» CVi'ERUS PILOSUS, Vahl. 



F. B. I. vi. 609; B. P. 1143. 



Tail perennial glabrous sedge, up to 3 feet. Rhizome 

 woody. Stem acutely triquetrous above. Leave? 

 shorter than stem. Umbel compound. Bracts 4', 

 longer than umbel, leaf-like. Rachis of umbel, finely 

 hairy. Secondary umbel corymbose Spikelets 

 spicate, dark red-brown. Nut^ glume, black. 



Rachilla winged^ Nos- 21 — -25. 



gi. CypErus corymbosus, Rottb. 



F. B. I. vi. 612 ; B. P. 1 144; F. B. P. ii. 870. 

 A tall perennial sedge, up to 3 feet. Rhizome 

 creeping. Stem spOngy, Obscurely trigonous above. 

 Sheaths short, loose, with oi: without a shoi't 

 lamina. Umbel coiipound. Bracts variable, 

 leaf-like. Spikelets spicate, reddish=br6wn. Nut 

 half length of glume, black, R.achiila winged. 



22, Cyperus tegeTum, Roxb. 



F. B. I. vi. 613; B. P. 1144; ^' B. P. il. 870. 



A perennial tall glabrous sedge, up to 3 feet. Rhi- 

 zome creeping, woody. :;5tem trigonous or tri- 

 quetrous. Leaves variable, sheath loose. Umbel 

 compouDd. Bracti 3, usually long, leaf-like. 

 Spikelets spicate, brown or reddish brown. 

 Glumes remote. Rachilla Slrdngly winged, wing- 

 red. Nut grey-black. 



23. Cyperus rotundus, Linn^ 



F.B. L VL614; B- P. 1145; F. B. P, ii. 871. 

 Medium-sized glabr6us perennial sedge, up to 2 feet. 



Rhizome nodulose with thin wiry part between. 



Stem trigonous. Leaves rigid, variable, often 



longer than stem. Umbel coi^^pound or sim.ple. 



Bracts 3, variable. Spikelets spicate, red-brown. 



Rachilla winged. Anthers basifixed. JSut f 



glume, dark grey-black. 



J4. Cyperus tubErosus, Rottb. 



F. B. L vi. 616 ;B. P. 1 145; F'. B. P. ii. 872. 

 Medium-sized glabrous perennial sedge, up to 3 

 feet. khizome creeping. Stem trigonous, 

 bulbous at base. Leaves shorter than stem. 

 Umbel compound. Bracts 3-4, longer than umbel. 

 Spikelets spicate, reddish-brown. Rachilla winged. 

 Anthers mesifixed. Nut ^ glume^ pale grey. 



