CyperUS. TRIANDRIA MONOGYNIA. 121 



' — Spikei sessile, five or six, forming a small head on one side 

 of tlie culiii about au inch and half below its apex. Involucre, a 

 minute, subulate leatiet immediately under the spikes, and of the 

 same iengih uiih them. — Scales of tiie spikes numerous, ovate-ob- 

 long, wiute, smooth and rather obtuse Staraina three. — Stioma 



bitid. — Seed oval, flat on the inside, and convex on the exterioi-, lead- 

 colour or grey, and smooth. 



C7;6. 1 his differs from the plant which I consider to be C. mu- 

 crouatus of littz. fasc. 5. p. 10. in being perfectly erect and destitute 

 of foliage; whereas that species has leaves, is smaller, and always 

 ascends m a curved direction ; in that the scales of the. spike are acute, 

 in this obtuse, in other respects they are very much alike. At pre- 

 sent I am inchned to think C. mucronatus of Vahl. and Rottboel may 

 be referred to this, consequently \\ illdenovv's C. mucronatus. Sp» 

 FL 1. 273. includes these two species. 



4. C. nudus. R. 



Culm from three to four feet high, round, naked, inwardly inter- 

 cepted. Leaves none ; Umbel compound ; involucre chaffy. Stigma 

 three-cleft. Seed three-sided. 



A native of stagnating, or slowly running sweet ^vater over India, 

 Moot perennial, fibrous. — Culms erect, round, naked, articulated 

 smooth, from three to four feet high, above as thick as a common 

 large quill. — Leaves no other than a rusty coloured sheath or two 

 embracing the base of each cnlni.—Umkel terminal, generally com- 

 pound, though sometimes decompound.— //ivo/w(.;e several small 

 chaffy scales — Umbellets long, slender, peduncled, bowino-, com- 

 posed of from eight to twelve linear, sessile, rust-coloured spikes. 



LivolucelsVike the involucres. —iS^ec? sub-linear, three-sided, smooth, 

 light brown. 



5. C. semi-nudus. R. 



Culms from two to si.\ feet high, round, tending to be angular at the 



