•226 TRIANDRIA MONOGYNIA. SchptlS. 



35. S. strict us. R. 



Culms strain hi, from twelve to eighteen inches high, cu- 

 Inmnar. Umbel compound. Involucres chaffy; scales obtuse, 

 diandrous and roundish, compressed. 



Grows on a moderately dry, hard, barren, sandy soil. 



Root fibrous. -Culms straight, naked, rigid, from twelve to 

 eighteen inches high, round, very smooth. Leaves radical, 

 short, rio-id, but smooth. Umbel terminal, sometimes decom- 

 pound, contracted, seldom more than two inches long, and one 

 broad. Involucre from two to four, small, chaffy, tapering 

 sheaths. Spikes ovate, small, many-flowered. Scales with a 

 broad, white, membranaceous border. Stamens two. Stigma 

 two-cleft. Seed much compressed, obcordate, dotted with 

 brown. 



36. S. brevijolius. 



Culms erect, from six to eight inches high, semi-culumnar. 

 Umbel decompound; involucels chaffy; scales cuspidate, 

 monandrous. Stigma bifid. Seeds obcordate, striated. 



Is found generally on low sandy pasture ground. 



Root fibrous. Culms erect, mostly naked, from six to 

 ei»ht inches hi«h, flat on one side and rounded on the other. 

 Leaves sheathing, short. Umbel terminal, decompound. 

 Involucre from two to three-leaved, shorter than the umbel. 

 Spikes small, oblong ; while young sessile, but when old ap- 

 pearing peduncled, the scales and seeds gradually dropping 

 off and leaving the rachis naked. Scales keeled and pointed. 

 Stamen single. Style broad, enlarged at the base; above, 

 the maroins are hairy. Stigma two-cleft. Seeds obcordate, 

 convex on the outside, flat on the inner, white, striated. 



Obs. The single stamen and striated seed are the best 

 specific marks. It much resembles RottboePs figure of S. 

 dichotomus, but that species is described by Vahl as having 

 three stamina: (see Fimbristylis dichotoma, enum. ii. p. 

 227.) consequently they must be different. 



