360 96. CYPERACEJE. 



2. S. sylvaticus (L.) ; spikes clustered in a lorge cymose very 

 compound terminal panicle, clusters stalked and sessile, general 

 bracts several leaflike, gl. obtuse apiculate, nut obovate obtusely 

 trigonous. E. B. 919. St. 36. 8. R. viii. 313. St. 23 feet 

 high. Spikes very many, small, greenish, ovate. L. broad, flat. 

 Stigmas 3. [S. radicans (Schk.), spikes all stalked, glumes not 

 apiculate, stoles long and rooting, will probably be found.] 

 Damp woods and banks. P. VII. 



tt Stem triangular ; panicle naked. 



3. S. carinatus (Sm.) ; st. round below bluntly trigonous up- 

 wards, spikes in a small cymose panicle, gl. notched rnucronate 

 slightly punctate-scabrous and pilose fringed, nut " convex on 

 the back smooth." E. B. 1983. S. Duvalii St. 36. 2. R. viii. 

 308. St. 2 4 feet high, convex-faced; with 1 or 2 long sheaths 

 at the base, the uppermost terminating in a leaf of 3 or 4 in. 

 long. Lower bract much overtopping the panicle. Stigmas 2. 

 By rivers, near London and in Sussex. P. VI. VII. E. 



4. S. triqueter (L.) ; st. acutely triquetrous throughout, spikes 

 in a small cymose panicle, gl. notched mucion&te glabrous fringed 

 with rounded obtuse lobes, nut " roundish-obovate plane-convex 

 smooth." E. B. 1694. St. 36. 3. R. viii. 305. St. 34 feet 

 high, with flat or concave faces ; 1 or 2 long sheaths at the base, 

 the uppermost terminating in a short broad triquetrous leaf. 

 Lower bract long and rigid, resembling a prolongation of the 

 stem. Spikelets small, stalked and sessile. Anth. with a short 

 beardless point. Stigmas 2. Muddy banks of the Thames near 

 London ; and the Arun, Sussex. P. VIII. 



[5. S. pungens (Vahl) ; st. acutely triquetrous throughout, 

 spikelets few sessile, gl. notched mucronate smooth with acute 

 lobes, nut roundish-obovate plane-convex smooth. E. B. S. 

 2819. R. viii. 304. St. 36. 4. S. tenuifolius DC. St. from a 

 few inches to 1 J foot high, slender ; with several sheaths at the 

 base terminating in long narrow keeled leaves. Lower bract very 

 long and rigid, resembling a prolongation of the stem. Spike- 

 lets large, ovate, obtuse, all sessile. Anth. with a subulate 

 fringed point. Stigmas 2. St. Ouen's Pond, Jersey. P. VI. 

 VII.] 



ttt Stem terete. 



6. S. lacustris (L.) ; st. round, spikes in a terminal twice com- 

 pound panicle, gl. notched mucronate glabrous fringed, nut ob- 

 tusely trigonous obovate, stigmas 3. E. B. 666. St. 36. 1. .R. viii. 

 306. St. 4 6 feet high, naked; with 1 or 2 long sheaths at the 

 base. Anth. bearded at the end. Panicle terminal. The bract 

 sometimes resembles a continuation of the stem. Sometimes the 



