CO TRIANDRIA— MONOGYNIA. Scirpus. 



*** Stem triangular. Panicle naked, 



10. S. triqueter^ Triangular Club-rush. 



Stem acutely triangular, straight, naked, sharp-pointed. 

 Spikes lateral ; sessile or stalked. Stigmas two. Seed 

 smooth. 



S, triqueter. Uim. Mant. 1. 29. mild. v. 1 . 302. Vahl Enurn. 



V. 2. 270. FL Br. 55. Engl. Bot. v. 24. t. 1694. Hook. Lond. 



t.^2. Schrad. Germ. v. 1. 140. Fl. Dan. t. 1563. 

 S. n. 1338. Hall. Hht. v. 2. ]77. 

 Juncus acutus maritimus, caule triquetro maximo moUi, et proce- 



riornostras. Pluk, Almag. 200. Phyt. t. 40. f. 2. RaiiSyn.42S. 

 (3. Scirpus pungens. Vahl Eniim. v. 2. 255. 

 Juncus acutus maritimus caule triquetro, rigido, mucrone pungente. 



Pluk. Almag. 200. Phyt. t. 40. f. 1 . Dill, in Rail Syn. 429. 

 J. acutus maritimus, caule triangulo. Bauh. Theatr. \7b.f. Moris. 



r.S. 232. sect. 8. t. 10. f. 20. Rel. Rudb. 22. f. 2, 3. 



About the muddy banks of rivers exposed to the tide, but rarely. 

 In the Thames at Lambeth, Battersea, &c. as well as below 

 London. Doody. /3. Found by Sherard in Jersey. 



Perennial. August. 



Root creeping, forming large entangled tufts. Stems 3 feet high, 

 acutely triangular throughout, pliant and cellular, with many 

 transverse interruptions ; the point erect and rather sharp. Leaf 

 solitaiy, very short, with a long close sheath. Spikes from a 

 lateral' cleft, 2 or 3 inches below the top, partly sessile, partly 

 on rigid angular stalks ; all ovate, of numerous, closely imbri- 

 cated, elliptical, concave, fringed, keeled, pointed, partly reddish, 

 glumes. Stam. 3, with 3 rough intermediate bristles. Stigm. 2, 

 downy. Seed roundish, obtuse, smooth and polished, in which, 

 as Schrader observes, it differs from the exotic S. mucronatus, 

 whose seed is minutely corrugated, with 5 or 6 rough bristles 

 beneath. Our S. triqueter has 3 or 4, scarcely more. /3, as far 

 as I can discover, is but a variety, whose spikes are all sessile. 

 Yet Plukenet's figure more resembles a Carolina species, .S. 

 americanusoi Pursh, n. 16 ^ and Commerson's specimen before 

 me, alluded to by Vahl, is like mucronatus, but has smooth seeds. 



11. ^. carinatus. Blunt-edged Club-rush. 



Stem bluntly triangular upwards, naked ; round at the base. 

 Panicle cjonose, terminal. Bractea pungent, channelled, 

 erect. Stigmas two. 



S. carinatus. Comp.XO. Engl. Bot. v. 28. t. 1983. Hook. Lond. t. 79. 

 S. lacustris /3. Huds,\9. Fl. Br. 52. 



Juncus aquaticus medius, caule carinato. Dill, in Raii Syn. 428. 

 Doody's Furrowed Bull-rush. Pet. Cone. Gram. n. 199. 



