CYPERACEJE. (SEDGE FAMILY.) 525 
long as the nut. — Var. GLOBULARIS. Smaller (6/- 15! high) ; corymbs reduced 
to few globose-ovate dark brown clustered spikes ; nuts smaller, and deeper fur- 
rowed. — Low ground, Florida, and northward. June and July. 
7. R. compressa, Carey. Culms stout, 3-angled (29 — 3 high) ; leaves lin- 
ear, rigid ; corymbs 3 -- 5, remote, spreading ; spikes ovate, numerous, in dense 
bracted clusters; scales acute; nut obovate; the flat or somewhat depressed 
sides strongly wrinkled and pitted, twice as long as the 6 bristles; tubercle 
conical-beaked, with the dilated base wider than the nut. — Margins of pine- 
barren ponds, West Florida. June and July. — Radical leaves numerous, 19 
long. 
+ + Bristles equalling or longer than the nut (in No. 9 variable). 
8. R. stenophylla, n.sp. Culms and leaves setaceous ; corymbs 1-2, 
small, erect; spikes 5-7, distinct, lanceolate-oblong ; nut obovate, biconvex, 
strongly wrinkled, twice as long as the conical-beaked tubercle; bristles 6, slen- ` 
der, nearly as long as the nut and tubercle.— Low grassy pine barrens, Apala- 
chicola. June and July.— Culms tufted, 1° long, 
9. R. microcarpa, Baldw. Culms (2° high) erect, slender, nearly terete ; 
leaves narrowly linear; corymbs 4-6, slender, spreading, compound; spikes small, 
round-ovate, scattered; nut round-obovate, lenticular, strongly wrinkled, tipped 
with the very short and broad tubercle ; bristles 5-6, as long as the nut. — 
Varies with the spikes clustered, and the 3 bristles not half the length of the 
nut. — Margins of ponds, Florida to North Carolina. July and Aug. E 
10. R. inexpansa, Vahl. Culms nearly terete, slender (29 — 39 high) ; leaves 
narrowly linear; corymbs 4 —5, narrow, remote, compound, drooping ; spikes 
scattered, lanceolate ; nut lanceolate-oblong, compressed, twice as long as the 
conical-beaked tubercle ; bristles 6, very slender, twice the length of the nut.— 
Swamps and banks of streams, Georgia, and northward. July and Aug. 
11. R. decurrens, n. sp. Culms (2°-3° high) erect, nearly terete, very 
slender and bending near the top; leaves linear, elongated, flat and somewhat 
glaucous; corymbs 5-6, remote, compound, the bristle-like branches spreading 
or drooping ; spikes (1" long) ovate, scattered, pedicelled ; nut obovate, lentic- ; 
ular, slightly wrinkled and pitted ; tubercle compressed, crescent-shaped, with 
the edges decurrent, j the length of the nut; bristles 6, as long as oat 
Marshy banks of lakes and rivers, West Florida. June and July. 
12. R. patula, Gray. Culms 3-angled (2°-3° high), slender above; leaves 
linear; corymbs 3-5, remote, compound, widely spreading ; spikes scattered, 
ovate, on slender stalks; nut round-obovate, lenticular; tubercle flat, conical, 
half the length of the nut, ciliate on the edges; bristles 6, rather longer than the 
nut. — Varies with the spikes lanceolate, the narrower nut contracted at the 
base, and the bristles twice the length of the nut.— Banks of pine-barren 
streams, Florida and Georgia. June and July. 
13. R. Elliottii, Dietr. Culm (29 - 39 high) 3-angled ; leaves linear (1"— ; 
Middle 5-5, compound, the Kyu Sane minote; spikes small, ovate, 
fat, 4 as long i a is ay Hi song he mat sd 
