52 TRIANDRIA. MONOGYNIA. scirpus. 



Nearly allied to S. minimus of Ta h /, but probably distinct, 

 as tnat species is a native of Africa. It also resembles S. se- 

 taceusy but is easily distinguished by the involucrum and sub- 

 squarrose spikes. 



21. S. capillarls L.: culm nearly naked, triquetrous, 

 capillary ; spikes ovate, 2 — 3 of them pedunculate, with an 

 intermediate sessile one. Lin, Mant, 321, W Hid, Spec, 

 I. p. 302. Vahl Enum, II. p. 276. Pursh Fl, \. p, 37. 

 Muhl. Gram. p. 36. S. ciliatifolim Elliott Sk,L p. 82. 

 IsoLEPis capillaris R o em, ^ S chult. II. p. 11 8. S. pu- 

 sillus autumnalis, &c. Gron. Virg, 10. 



Root fibrous, annual ? Culm about a span high, very slender, 

 cespitose. Leaves setaceous, mostly radical, much shorter 

 than the culm, sheathing at the base, ciliate-serrulate ; throat 

 of the sheaths bearded. S/iikes somewhat umbellate, gene- 

 rally 4, ovate-oblong, one, and sometimes two of them nearly 

 sessile, the rest on peduncles half an inch or more long. In- 

 ■volucrum 1 or 2-leaved ; one of the leaves a little longer than 

 the umbel. Glumes oblong, the upper ones obtuse, ferrugi- 

 nous, with a green keel. Stamens 3. Style 3-cleft. Seed 

 short, triquetrous, white, minutely corrugated transversely, 

 naked at the base. 



Hab. In sandy fields; plentifully near New-Durham, Nev»^= 

 Jersey, about three miles from the city of New-York. In 

 Pennsylvania and New-England. Muhlenberg. Near 

 Phillipstown, New-York. Dr. Barratt. August. 



22. S. autumnatis L,: culm compressed, ancipitous ; 

 umbel compound ; involucrum 2-leaved ; spikes lanceolate, 

 acute, somewhat 4-sided. Lin. Mant, \Z0, Willd.Spec, 

 I. p. 301. Pursh Fl. I. p. 67. Elliott Sk. 1. p. 82. 

 Muhl. Gram. p. 37. Willd. Berl, Mag. II. p. 287. t. 8. 

 f. 1. (fide R. ir S.) S. mucronulatus Mich, Fl, I. p. 31. 

 Roem. ^ So hull. II. p. 145. Fimbristvlis autumnalis 

 Roem, ^ S chult, II. p. 97. S. foliosus pusillus autum- 

 Dahs, &€. Gron. Virg, p. 10. 



Root fibrous, perennial. Culm from 8 inches to a foot in height, 

 cespitose, rough above on the margin, leafy at the base. Leave* 

 flat, narrow-linear, nearly as long as the culm. Sheaths slightly 

 bearded at the throat. Spikes sometimes conglomerate in 

 threes at the extremity of the branches of the umbel. Involu- 

 erum unequal; one of the leaves shorter than the umbel. 

 Glumes ovate-lanceolate, mucronate, keeled, a little squarrose 

 at the tips when mature. Stamens 3. Style 3-cleft, not cili- 

 ate. Seed compressed-triangular, smooth, white, naked at the 

 base. 



Hab. In low boggy grounds, and in sandy swamps ; common. 

 July— October. 



