Scirpus. TRIANDRIA MONOGYNIA. — 215 
terminal, nakad, sub-cylindric ; scales oblong, obtuse. Seeds beset 
with bristles. 
A leafless, rush-like species ; it grows in shallow standing sweet 
water. 
. Root stoloniferous, with thick, spongy, and capillary fibres.— 
Culm erect, round, smooth, naked, except the lower part, which is 
covered with a membranaceous sheath or two; inwardly intercepted 
with transverse, rigid sep'ums, at every inch and quarter, besides 
numberless, irregular, smaller ones between.— Spike terminal, cy- 
lindrie, two inches long, naked.— Scales obovate, smooth, a little 
keeled, margins membranaceous.—Stamens three, with bristles 1n» 
_termixed round the base of the germ. 
3. S. tumidus. R. , : 
-Culms from two to three feet high, round, regularly intercepted. 
Spike terminal, cylindric. Scales broad-lanceolate. Seeds beset 
with simple bristles. 
This species is very much like the last described, end a native 
of similar places, but much rarer. 
Root, the same.— Cum erect, three feet high, round, smooth, na- 
ked, seemingly swelled, intercepted with a conspicuous transverse 
Partition every sixth of an inch.—Leaves none, but sheathes as in _ 
the former. —Spike single, terminal, erect, cylindric, an inch long. 
—Scales broad-lanceolate, acute, a little keeled, otherwise smooth, 
—Stamens, bristles, &c. as in the other species. 
4. S. spiralis. Linn. Sp. Pl. ed. Wilid. 1. 290. Rottb. gram. 45. 
t. 15. f. 1. Vahl. 2 252. 
Culms from two to three feet high, Poeme Spike terminal, 
naked, cylindric, obtuse. Scales lapped. Seeds beset with bristles. 
isis a native of the same places with the last described. 
Root stoloniferous, &c. as in S. plautaginus.— Culm erect, from 
two to three feet high, naked, three-sided, angles sharp, smooth, 
Rot articulated, nor inter rupted inwardly.— Leaves none, buta sheath 
"two embracing the base of the culm.—Spike as in ae plantagi- 
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