214 TRIANDRIA MONOGYNIA. ScirpuS. 



Spike as in the former. Scales smooth, obovate. Stamens, 

 bristles and pistil as iu the last four species. 



7. S. incurvalus. R. 



Cains in tufts, rulumnar, from six to nine inches high, in- 

 curved, leafless, intercepted. Spikes in a globular, naked 

 verticil near the base of the culm. Stigma trifid. Seed 

 three-sided. 



A native of moist places near Calcutta. Flowers during 

 the cool season. 



Root of rust-coloured, capillary fibres. Culms numerous, 

 from their incurved shape forming- nearly a globe, leafless, 

 round, smooth, intercepted at every half inch or less; ge- 

 neral leno-tli from six to eioht inches, and thicker than a crow- 

 quill. Sheaths a few between the spikes and root. Spikes nu- 

 merous, sessile, ovate-oblong-, forming a round verticil about 

 an inch and a half above the root. Scales round, ovate-ob- 

 tuse. Seed ovate, triangular. 



8. S. articulatus. Linn. sp. pi. ed. Willd. i. 290. Vahl. 

 enum. ii. 358. 



Culms from two to four feet high, culumnar, intercepted 

 with conspicuous partitions. Spikes pointed, crowded into a 

 head near the base. Seed naked, three-sided. 



Tsjelli. Rheed. Mai. 12: p. 135. t.l\. 



Hind, and Beng. PMtpwti-chechka. 



Teling. Lutti pitta-allie. 



This is also a native of standing sweet water. 



Root stoloniferous, and fibrous as in the former. Culm 

 erect, from two to four feet high, round, smooth, naked, inter- 

 cepted inwardly by transverse septums at every inch, or 

 half inch ; they are conspicuous on the outside, even while 

 the plant is growing. Leaves no other than a short sheath or 

 two, involving the base of the culm. Head lateral, near the 

 base of the culm sessile, sub globular, composed of many, 

 (fifty to sixty) oblong-pointed, sessile, many-flowered spikes. 



