30D North American Cijperacea. 
S. glaucus, Tbrr. / /. 1. p. 44. 
S. glaucescens, Willd. 
Culm 1 — 2 feet high, of a soft texture, \tirying in diameter from filiform 
to a line and a half. SpiTce 3 — 5 lines long, many-flowered. Scales 
fuscous in the middle, with a broad scarious and generally lacerated 
margin. Bristles 3 — 6, overtopping the tubercle, retrorsely scabrous. 
Stamens 3. Nut compressed, smooth, but dull. Tubercle rostrate- 
conical, nearly half the length of the nut, which is contracted into ashort 
neck beneath it. 
Hab. Swamps, and low grounds, from near the Arctic 
Regions ! to Florida ! and from the Atlantic ! to the Pacific 
Ocean ! 
Obs. a native also of Europe, Caucasus, the East Indies, 
and the Sandwich Islands. The nut is incorrectly described 
by Muhlenberg and in my Flora, as " punctate and rugose." 
The S. glaucus of the Flora of the Northern and Middle States, 
I now believe to be only a variety gf S, imlusirisf 
5. Eleocharis olivacea. 
Culms filiform, (often diffuse) compressed, sulcate, soft ; 
spike ovate, somewhat obtuse, many-flowered ; scales ovate, 
obtuse, membranaceous ; bristles 6, nearly as long as the nut ; 
style bifid ; nut obovate, lenticular, dull ; tubercle conical, 
rostrate, distinct. 
Scirpus intermedins, Gray ! Gram. S^- Cyp. part 1. no. SO, (excl. syn.) 
Culms cespitose, often (particularly when growing out of water) diffuse, 
or subdecumbent, generally about a span long, and nearly a line in dia- 
meter, but sometimes not more than an inch in length, of a soft flexible 
texture, (as in E. jyalustris), with mucronate sheaths at the base. Spikes 
3 lines long, 20 — 30-flowered. Scales rather loosely imbricated, one or 
t^o of the Ipwest shorter, and bracteiform ; the others with a narrow 
scarious margin, reddish sides, and a green midrib. Bristles conspicu- 
ous, generally 6, retrorsely hispid. Stamens 3. Nut broadly obovate, 
distinctly compressed, smooth, but not polished, dark olive wlien ripe. 
Tubercle rather free round the base, acute, about one third the length of 
the nut. 
ITab. Wet -aiidy places, goiiorally partly under water. 
