SOS TRiANDRiA MoMoeTKiA. Ct/peris?f, 



This is by far the largest species on the coast of CoromandeL It 

 grows in sweet standing water. 



Root fibrous. — Culms erect, from six to twenty feet high, and 

 thick in proportion, naked, except near the base, three-sided^ angles 

 sharp, rigid and scabrous, so as to cut the hand readily, other parts 

 pretty smooth. — Leaves sheathing, in small plants, as long as the 

 culm, about an inch in diameter at the broadest part, triangularly 

 concave, wi.h the keel and margins sharply serrate.— I7w6e/ termi- 

 loal, decompound, erect, small lor the size of the plant, being only 

 about a foot high in middle-sized plants. (Jmbellets one, or two, sub- 

 sessile and from eight to ten pedunded, composed of erect, linear, 

 short pedicelled, compound spikes, ol simple, sessile, lanceolate, from 

 six lu teu-iluwtied ^pikelets which suirounci every part ol the com- 

 pound spikes. — Involucre ihree-teaved, with some smaller within 

 these three, margms and keel as m t!ie leaves — Involucels small, 

 one-third the length of the umbellets. — Scales membiane-bordered, 

 acute. — Filaments three, membranaceous. Anlliers euduig in a 

 thread. — Seeds three-sided. 



36. C. umhellatus. Vahl. Enum. PI. 2. 362. 



Culms from four to six feet, blunt-angled. Umbel decompound; 

 spikes all sub-sessile, linear, spreading; spikelets numerous, alternate, 

 from three to four-flowered. Seed elliptic, three-sided. 



Teling. Pedda shaka. 



A large species, growing in standing fresh water. 



Root fibrous. — Culms erect, from four to six feet high, pretty 

 smooth, naked, except at the base, obsoletely three- sided, angles 

 rounded, sides hollowed. — Leaves mostly radical, sheathing, the long- 

 est of them about as long as the culm. — Umbel decompound, spread- 

 ing, about six inches each way. Umbellets, two or three sub-sessile, 

 and from five to ten on pretty long peduncles of unequal lengths ; they 

 are composed of small partial, short-pedicelled umbellets of three 

 to six linear compound spikes, composed of numerous, small, sessile, 

 from three to four-flowered, simple spikelets. Juvolucel from three 



