TRIANDRIA, MONOGYNIA. 31 



S. cvperiformis. Muhl. Cat. and descrip. Ubei. 



( .1 am. 

 S. lupulinus, SprengeL 

 Mariscua umbellatus. Pursh, fl. Am. Sep. vol. 1. p. 



59. ? 

 Kyllingia umbellata. Lin. suppl. 105. ? 



From 6 to 14 inches high. In the sandy roads, wastes, and 

 fields of Jersey, common. On the high Mixta hills below 



Gloucester point (Jersey side) ; common- In a stony field, 

 two miles above the Tails of the Schulkill, west side, frequent. 



31. Scirpvs, Gen. pi. 94. fCperoidex.J 



Calix scales chaffy, imbricated on all sides in 

 a spike. Corolla 0. Style filiform, un- 

 bearded, deciduous. Seed 1, naked, or sur- 

 rounded w ith involucellate setae or threads, 



Mat. 



1. S. culm erect, naked, compressed, cespitose. capiutu;. 

 Base of the sheath retuse, mucronated, whitish. 

 Spike terminal, ovate, obtuse. Cal. glume ovate, 

 obtuse, brown, margin white. Stam. 3, anthers 

 white. Fist, bifid. Seed shining, oval, smooth, 



M 



S. ovatus. Willd, 



S. tuberculosus. Mich. ? 



S. capitatus. Schreb. and Swartz. 



S. ovatus. Ii.tr. Prod. Fl. Ph. p. 17. 



From a careful comparison of original specimens from Shchre* 

 ber, Willdenow, and Swartz, in my Herbarium, with our na- 

 tive plant, I have added the above synonyms. It varies in 

 height, but is generally a foot tall. Perennial. Common in 

 muddy ditches and shallow ponds, every where. August- 



2. S. culm acicular, two inches high, four angled, triehodti 

 purple at the base, cespitose. Sheath truncate, MuhL 

 obtuse. Spike terminal, ovate, acute, 1, 4, 6 flow- 

 ered ; bractea one, obtuse. Cal. glume, some- 

 what obtuse, brown on the margin, keel green, 

 Stam. 3, white. Fist, bifid. Seed triquetrous, 

 white or yellowish, shorter than the bristles. 



