scmrvs. TRIANDRIA. MONOGYNIA. 45 



p. 29. S. glaucecms Willd. Enum. hort. BeroL I. p. 76? 

 Roem. ^ Schiilt. II. p. 126? 



Root perennial. Culm very slender, about a foot high. Sfiike 

 brownish. Glumes very obtuse and generally emarginale. 

 Bristles 4, longer than tlie seed, but shorter than tlie tubercle. 

 p[AB. Borders of salt marshes near New -York. July. 



This species differs from the S. tuberculosus of Ali c haux^ 

 which Mu hi en b erg remarks it should be compared Vfith, 

 in having an angular, instead of a round, culm, Sec. 



3. S. palustris L. : stem round, inflated ; spike oblong- 

 lanceolate ; glumes somewhat obtuse ; seed roundish, punc- 

 tate and rugose ; bristles scabrous. Willd. Spec. I. p. 291, 

 Pursh Fl.\.p.5i. Elliott Sk.\. p. 77. Mu hi. Gram. 

 p. 28. Ri.TE.ocnK^is palustris Roem.^- Schult. II. p. 151. 



Culm erect, a foot and a half or two feet high, slightly striate, 

 leafless. Sheaths very long, embracing the lower part of the 

 culm. Sfiike sometimes oblique; the lower glUmes larger, 

 and often empty. Seed crowned with a conical tubercle, yel- 

 lowish, as long as the bristles. Stamens 3. Style 2-cleft, 



Hab. In overflowed meadows, and on the borders of ponds. 

 June. 



4. S. capltatus L. : culm terete, or somewhat compressed ; 

 spike ovate, obtuse ; seed oval, compressed, smooth. Sp, pi. 

 70. fVi 1 1 d. Spec. 1. p. 294. excl. syn. nisi L in. et G r o n* 

 Wa 1 1. Car. p. 70. Pursh Fl. I. p. 55. Elliott Sk. I. 

 p. 77. Muhl. Gram. p. 30. S. ohtusm Willd. Enum. 

 h. BeroL I. p. 76. Roem. ^r Schult. II. p. 126. Eleo- 

 CHAB.IS capita ta R. B r w 71. Roem.^r Schult. U.^. 153, 



Root fibrous, perennial. Culms cespitose, erect, attenuated be- 

 low the spike. Sfiike sometimes almost globose; glumes 

 pvate-round, brown, with membranaceous margins. Tubercle 

 of the seed conical, acute. Bristles 6, a little longer than the 

 seed. Stamens 3. Style bifid. 



Hab. In similar situations with the preceding. July — August. 



5. S.acicularis L. : culm setaceous, quadrangular; spike 

 ovate, acute, 3 — 6-flowered ; glumes somewhat obtuse ; sta- 

 mens 3 ; style bifid ; seed obovate. W Hid. Spec. I. p. 295. 

 Vahl Enum. II. p. 215. S. trichodes M u h I. Gram, p. 30. 

 Elliott Sk. I. p. 76. S. capillaceus Mich. Fl. I, p. 30. 

 Eleoch ARis acicularis R.oem. ^' Schult. 11. p. 154, 



Culm 3-^6 inches long, hair-like, cespitose. Spikes seldom more 

 than 4-flovvered ; sometimes even single-flowered. Lowest 

 glume large, empty, and obtuse. Seed white or yellowish, 

 obscurely triangular, marked with 6 or 8 prominent longitu- 

 dinal lines and finely striated transversely. Bristles 4, rarely 

 wanting. 



