31 
TRIANDRIA, MONOGYNIA. 
S. cyperiformis. Muhl. Cat. and descrip. Uber. 
Gram. 
S. lupulinus, Sprengel. 
Mariscus 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 sandy hills below 
Gloucester point (Jersey side) ; common. In a stony field, 
two miles above the falls of the Schulkill, west side, frequent. 
31. SciRPus, Gen. pi. 94. ( Cyperoidete.J 
Calix scales chafFy^, imbricated on all sides in 
a spike. Corolla 0. Style filiform, un- 
bearded, deciduous. Seed 1, naked, or sur- 
rounded with involucellate setae or threads. 
Nutt. 
1. S. culm erect, naked, compressed, cespitose. 
Base of the sheath retuse, mucronated, whitish. 
Spike terminal, ovate, obtuse. CaL glume ovate, 
obtuse, brown, margin white. Stain. 3, anthers 
white. Pist. bifid. Seed shining, oval, smooth* 
Muhl. 
S. ovatus. Willd* 
S. tuberculosus. Mich. ? 
S. capitatus. Schreb. and Swartz. 
S. ovatus. Bar., 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 fool tall. Perennial. Common in 
muddy ditches and shallow ponds, every where. August. 
2. S. culm acicular, two inches high, four angled, 
purple at the base, cespitose. Sheath truncate, 
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. Pist. bifid. Seed triquetrous, 
white or yellowish^ shorter than the bristlesi 
capitat^ii# 
tricliod#, 
Muhl. 
