> Scirpus. | TRIANDRIA MONOGYNIA. 213 
43. C. Haspan. Linn. Sp. Pl. ed. Willd. 1. 287. 
Culms from four to sixteen inches high. Umbel super-decom- 
. pound, involucre two-leaved.' Seeds globular, white. 
- Gramen cyperoides madasarpatanum, &c. Pluck. alm. 192. F. g. 
Teling. Poo-cushalic. 
An elegant small species, a native of cultivated moist places. 
Root fibrous.—Culms erect, from four to twelve inches high, 
three-fourths naked, obsoletely three-sided, smooth.— Leaves sheath- 
ing, often as long as the culm, very slender.— Umbel super-de- 
compound, in small plants as long as the culm. - Umbellets one or 
two sessile, and from four to six peduncled. Partial umbellets of 
the first and second degrees pedicelled. — Involucre generally two- 
leaved, unequal, the longest rather longer than the culm; involucel 
a few chaffy scales only.—Stamens two or three.— Seed sub-globu- 
lar, pure white, smooth. 
SCIRPUS. l0 
- Glumes chaffy, imbricated on all sides. Corol none. Seed one. 
Sect. 1st. Without leaves. 
“1,5. tuberosus. R. ; 
— Root tuberous. Culms culumnar, jointed, leafless. Spikes te termi- 
nal, cylindric, naked. Scales oblong. Base of the style cordate. Seed 
cordate, beset with glochidate bristles. — 
N Pi-tsi, Maa-tai, Pu-tsai, or Pe-tsi, or water chesnut of the Chinese; 
. Tt is mentioned by Abbe Grosier under the first name, and under 
the other appellations was tr ansmitted from Canton, by Mr. Dun- — 
can, at the desire of the Governor General, for the Company's. ^ 
Botanic Garden, fier it blossoms about the close of the rains, in ; 
September. « 
Root fibrous, with stolonifersus shoots and round turni 
tubers.— Culms erect, naked, slightly twisted to the right, 
intercepted by slender membranes, distant a line, 
from each other, every eight o or ind s here, partiti 
