60 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. Linn. Mant. \. 29. mild. v. I. 302. Vahl Enum. 



V. 2. 270. Fl. Br. 55. Engl. Bat. v. 24. t. 1694. Hook. Lond. 



t.92. Schrad. Germ. v. 1. 140. Fl. Dan. t. 1563. 

 S. n. 1338. Hall. Hint. v. 2. 177. 

 Juncus acutus marilimus, caule triquetro maximo molli, et proce- 



rior nostras. Pluk. Almag. 200. Phyt. t.AO.f.2. RaiiSyn.42S. 

 /3. Scirpus pungens. Fahl Enum. v. 2. 255. 

 Juncus acutus maritimus caule triquetro, rigido, mucrone pungente. 



Pluk. Almag.-200. PInjt. t. 40. f. 1 . Dill, in Raii Syn. 429. 

 J. acutus maritimus, caule triangulo. Bauh. Theatr. 175. f. Moris. 



V. 3. 232. sect. 8. t. 10./. 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 

 solitary, 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. Sfam. 3, vvith 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. 

 americanus oi 'P\xr&\\, n, 16 ; and Commerson's specimen before 

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



11. S. carina/us. Blunt-edged Club-rush. 



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

 Panicle cymose, terminal. Bractea pungent, channelled, 

 erect. Stigmas two. 



S.carinatus. Comp.lO. Engl. Bot. j;.28. t. 1983. Hook. Lond. t.79. 

 S. lacustris /3. Huds. 1 9. Fl. Br. 52. 



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

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



