Cyperus.» TRIANDRIA. MONOGYNITA, 197. 
Leaves. ensiform, polished, shorter than the culms. Culms 
slightly incurved, leafy round the base, triangular, with sharp. 
angles, concave sides, and from one to two feet high. Invo- 
lucre.two, or three-leaved, incurved, one of them two or three 
times longer than the umbel. Umbel compound. Spikes 1 nee- 
dle-shaped, incurved. Scales oblong, obtuse, with a green 
rib. Stamina three. Germ oblong. *Stigma three-cleft. Seed 
linear, oblong, three-sided, smooth, brown. 
r 23, C. tortuosus. Kins Ms. 
Culms obtusely three-sided, from six to eight inches high. 
Umbel compound, length of the involucre. Spikelet linear, 
incurved, flowers rer nee Seed obovate, compressed, wih: 
out angles, i 4 
_ A native of moist pasture ground, 
Root somewhat tuberous, with filiform fibres. en 
from six to eight inches high, naked, three-sided, smooth. 
' Leaves radical, shorter than the culm. Umbel compound, 
Umbellets from four to eight, shorter and longer peduncled, 
composed of large, linear, many-flowered, ehesnut-coloured, 
curved spikes. Jnvolucre three-leaved, longer than the 
umbel. Stamina two, Style two-cleft.” Seed obcordate, 
compressed, ‘smooth. 
24, C. rotundus. Linn. sp. pl. ed. Willd. 1. 283, ant 
enum, pl, 343. 
_ Root tuberous. Culms from one to ae feet high, cbtusely 
ee Umbel compound; spikelets alternate ; Bees 2 
three-leaved, length of the umbel. Seed angled. — x 
C. rotundus, Rumph, Amb. 6. pie t fig. t: aS 
C. ee Rott. 28. LIAS 2. ri a 
rm. £. 
1-9 Bus 
