CYPERACEAE 191 
wanting.—Low pinelands, and shallow ponds, Coastal Plain, Fla. to Tex. and 
S. O—(W. I.) 
. Baldwinii (Torr.) Steud. Plants oP to 1 m. 2 the | stout, 
rough, pA Qs above: leaf-blades flat, 2-5 mm. wide, metimes narrower, 
oth o mewhat scabrous: spikelets in a ent terminal a un scales 
glabrous ‘the d ones 8-9 m ong: e fully 4 mm. long, the body 
oid or oval-ovoid, oth a udo a dies ently pointed, the base obscure, 
often with 2 obscure a in the shallow transverse A ak the hypogynium 
nting.—Pineland ponds and low oris Coastal Plain, Fla. to Tex. 
costata (Britton) Small Similar to S. Baldwinii in pep zu bins 
bod aes ig clusters: scales E the larger ones les 
ong: e less than 3.5 mm. long, the body ape ribbed pue dcus 
ds pura pesca the base prominent, “triangular ae ide with a deep 
nsverse excavation without pits, t pogynium "wan ing. [S. Baldwin 
Bienes Britton.]—Swamps and anm de Plain, Fla. ps Tex. and Ga. 
13. S. dpud D) Sw. Plant 1-6 dm. tall, the. dd lere slender 
leaf-blades 1.5—2 m. wide, with seabrous- ciliate eit ins keel: eus 
of spikelets 2—4, m pud the ds D Mes -like bee the upper 
with bristle-like bracts: achene 2—2.5 mm. long, rarely smaller, the body 
bright-white, oval, elipsoid, or obovoid ps an nd even, fered into a 
stout stipe-like base ith 3 depressions, the hypogynium wanting.—Low pine- 
lands and hammocks, "Tere ae Keys, Fla. and Florida Keys.—(W. I., Mex., 
W.) 
4. S. Meloni Muhl. Plant up to 9 dm. tall, the stems slender, often 
filiform, sometimes diffuse, usually glabrous: leaf- blades very narrowly ‘linear, 
0.5-1 mm. wide, I elusters of spikelets several on the upper part of 
the stem, separated: scales 1. = ro long: achene about 1.5 mm. long, the 
body globose, papillos e-ridged with the ridges sometimes c :onneeted and thus 
reticulate, beaked, with a broad ae like base.—Moist pin er s, sandy woods, 
direi and wet dud various provinces, Fla. to Tex., Minn., Ont., and Mass. 
—(W. I., Mex.) 
15. S. hirtella Sw. Plant 1-6 dm. tall, the stems slender, smooth or nearly 
so: leaf-blades 2—4 mm. wide, pubescen t: clusters of spikelets several on the 
upper part of the stem, separated, sessile, often nodding: scales mostly 2-3 mm. 
ong: ach ong, the body RE smooth, sometimes 
slightly pointed, non del pr a miis base.—Moist pinela nds and river- 
swamps, Coastal Plain, Fla. to La. and S. C.—(W. I., Mex., C. A., S. A.) 
AREX [Rupp.] L. Grass-like sedges, perennial by rootstocks, the 
Bisnis. monoecious or sometimes dioecious. ulm (stem) mostly eae 
often strongly phyllopodic or aphyllopodic. Leaves ; 
(braets) elongate or short, and subtending the spikes of flowers, or Md 
Flowers solitary in the axils of scales (glumes). Spikes one to many, either 
wholly pistillate, wholly staminate, androgynous or irem iie sessile or 
peduneled, the base of the peduncle often with a s ind -like 
organ (clado- -prophyllum ) surrounding it. Perianth non Stam ne flowers 
of a ree (or rarely two) stamens, the filament poles "ist DN flowers of 
ingle pistil, with a style i n or three stigmas. Style jointed with the 
on, tipped or rounded achene and withering, and at length deciduous, or 
continuous with achene persistent and not withering. Achene 3-angled, lenticu- 
1 Contributed by Kenneth Kent Mackenzie. 
