Scirpus, TRIANDRIA MONOGYNIA. 231 
on the margin, with sharp bristles pointing backward, My 
Sc, maximus is a much larger species, and the germ destitute 
of bristles, , _ 
46. Se. grossus, Vall. enum. ii. 270. [i 
Culms erect, from six to ten feet high, triangular, Umbel 
super-decompound, (Seed three-sided, beset — six, back- 
wardly hispid bristles, 
Exclude Sc. grossus, Retz. Obs. v. 15, which T presume 
is my Sc. maximus; the germ and seed being there destitute 
of the bristly involucre. To which of these Sc, grossus, Linn. 
Suppl. ought to be referred, I camot say. ; 
This, next to Sc. maximus, is by far the largest species 1 
have ever met with. It grows in standing sweet water. 
Culm erect, mostly naked, from six to ten feet high, three- 
sided; angles sharp, sides concave. Leaves radical, and 
round the base of the culms sheathing, much keeled, almost 
as long as the culms; edges slightly scabrous. Umbel super- 
decompound, five or eight inches each way.  Involucre 
three-leaved, the largest about two feet, the shortest six inches, 
they taper to a long, acute point ; margins pretty smooth. In- 
volucels chatty. Spikes oblong, dark-brown, many-flower- 
ed, Stamens three, with two bristles between each pair, 
Style three-cleft. | Seed three-sided, embraced by the six en- 
larged bristles, which are armed on the edges with stiff, bent 
back, short hairs, 
t 
a. Sev maximus. R, 
Culms straight, from six to fifteen feet high, tria 
Umbel. shleesineueis apie roundish, Seed ob 
Penoaitteds without bristles. _ i o 
22 8e. somite Retz, Obs. v. Lb. pa probably Linn. ane 
” 104. ee 
‘ ee aay 7 se Seadawing, « Paced water. 
» Root fibrous, and stoloniferous, Culms erect, most rigid, 
O4 
