!21S TUIANOHIA MONOQYKIA. ScirpUS. 



quarter of an inch by a slight membrane ; their places do not appear 

 ehLcrually even when the plant is dry. — Leaves no other than a sheath 

 or two. —Head lateral, near the base of the cuhn, sessile, globular, 

 composed of inany, (about one hundred) small, oval, obtuse, sessile, 

 many-tiowered spikes. — Scales oval, membranaceous. — Seed three- 

 sided, white, smooth. 



10. S. dubius- K. 



Root tuberous. Culms naked, culumnar ; intercepted with numer- 

 ous partitions. 



Teliu^. Allilce. 



Roots tuberous, with stolones and numerous fibres issuing fronj 

 them, outwardly of a dark dusky colour, inwardly white.— Leaves 

 erect, cylindric, smooth, about a foot long. 



Obs. I have never met with flowers of this plant which is a na- 

 tive of wet sandy pasture ground, and was formerly considered as a 

 species of Isoetes. The natives boil and eat the roots which they 

 say they are as good as yam?. 



U.S. capitatus. Linn. Sp. PI. ed. Willd. i. 294. P'ahl. ii. 250. 



Culms naked, from four to eight inches high, culumnar ; sjnkeSf 

 terminaT, globular. Seed black, roundish, bristle-beset. 



S. caribmis. Rottb. gram. 46. t. 15. f. 3. 



A native of barren, sandy, moist places. 



Rooi fibrous. — Culms erect, from four to eight inches high, round, 

 smooth, naked — Leaves no other than a sheath or two. — Spike ter- 

 minal, naked, sub- globular ; permanent bristles surround the germ 

 in this species, as in those with single, terminal, cylindric spikes. — 

 Sti/le two-cleft. — Seed obcordate^ compressed^ smooth, shining black, 



12. S.juncoides. R. 



Culms from one to three feet high, culumnar. Spikes oval, from 

 three to five in a sessile head, far below the apex. Seed roundish, 

 beset with bristles. 



A native of wet and noarshy places. 



