CYPERACE. (SEDGE FAMILY.) : 507 
* Spikelets approximate or crowded on all sides of the common rachis, forming oblong 
or cylindrical spikes. 
7. C. strigosus, L. Umbel large, 4 — 8-rayed, simple or compound, much 
shorter than the involucre; involucels bristly, shorter than the dense oblong 
spikes ; spikelets yellowish, linear, acute, compressed, 6 — 10-flowered ; scales 
somewhat scattered on the very slender rachis, oblong-lanceolate, acute, closely 
appressed, much longer than the linear-oblong acute minutely dotted dull nut ; 
culms (19 -39 high) tumid at the base, as long as the broadly linear leaves. — 
Swamps and damp soil, Florida, and northward. July- Sept. — Rays 4! - 6' 
long. Spikelets }‘- 3’ long. Sheath of the rays bristle-pointed. 
8. C. stenolepis, Torr. Umbel simple or compound, 6 — 9-rayed, shorter 
than the 3 — 6-leaved involucre ; sheaths of the rays truncate ; involucels bristly, 
shorter than the ovate compact spikes; spikelets yellowish, linear, acute, com- 
pressed, 5— 8-flowered ; scales linear-lanceolate, acute, involute, spreading, much 
longer than the oblong-linear acute dull and minutely pitted nut; culms smooth 
(29 - 39 high) ; leaves very rough on the margins, whitish beneath. — Swamps 
and wet places, Florida to North Carolina. Aug. and Sept.— Stem rather 
slender, longer than the leaves. Spikelets 6” — 8" long. 
9. C. Michauxianus, Schultes. Umbel compound, 4- 6-rayed; rays 
short with the sheaths pointed; spikes loose, mostly shorter than the leafy in- 
volucels ; spikelets spreading or reflexed, linear-subulate, terete, 10- 12-flow- 
ered ; scales scattered on the short-jointed broadly-winged rachis, oblong, obtuse, 
feintlyrastved, appressed; nut oblong, compressed-3-angled ; culms slender, 
obtuse-angled ; involucre 4-6-leaved. (C. speciosus, Vahl ?)— Swamps and 
ditches, Florida, and northward. Aug. and Sept. @ — Culm 2°-3° high. 
Spikelets 6” — 8" long, flexuous in fruit. 
Var.? elongatus, Torr. “Culm tall and slender; rays elongated; spike- 
lets subulate, obtusely quadrangular; scales lanceolate, acute." Torr. — North 
Carolina, Curtis. — Rays 3'—5' long. Spikelets crowded, 6 — 8-flowered. 
10. C. tetragonus, Ell. Umbel simple or compound, of 6-12 slender 
rays ; spikes cylindrical, loose ; spikelets horizontal, short (2 —3" long), oblong, 
4-angled, 4 - 6-flowered ; scales ovate, mucronate, appressed, 9 - 11-nerved, twice 
as long as the otik dull nut; culms mostly slender, 1? - 2° high, acutely 
rough-angled at the summit, as long as the green rough-edged leaves; invo- 
lucre many-leaved. — Dry sandy soil, along the coast, Florida to North Caro- 
lina. Aug. and Sept. 1} — Spikes 1/-1}/ long, 5" wide, those on the longer 
rays commonly compound. Rays 3'-5'long. Joints of the rachis broadly - 
ll. C. ligularis, L. Umbel compound, of 4-6 rays; spikes ovate or ob- 
long, dense ; spikelets spreading (4" long), linear-lanceolate, compressed-4-an- 
gled, 8 - 10-flowered, acute ; scales oblong-ovate, acute, spreading, 9 - 11-nerved, 
thrice the length of the oblong-obovate pointed blackish nut; culms obtuse- 
angled, shorter than the (39- 49 long) whitish long-tapering leaves. — Sandy 
shores at Key West. Oct. Y — Culm 29-39? high. Leaves rou 
: "rr ee Joints of the rachis broadly winged. 2 
