JUNCACEA, (RUSH FAMILY.) 495 
* * Leaves terete, knotted: stamens 6: flowers clustered. 
ll. J. caudatus, n.sp. Rigid throughout; stem stout, from a thick and 
creeping rhizoma; leaves commonly 3, short and pungent; panicle erect, com- 
pound, mostly contracted; clusters numerous, more or less crowded, 2- 4-flow- 
ered; sepals lanceolate, acute, unequal, the inner ones half as long as the oblong 
obtuse-angled acute capsule; seeds with a long and tail-like appendage at each 
end, white and shining. — Pine-barren swamps and bogs, Middle and West 
Florida. Aug. and Sept. — Stem 2° high. Leaves 2!- 6/ long, strongly knotted. 
Capsules light brown, turning almost black. 
* * * Leaves terete, obscurely knotted: stamens 6 : flowers solitary, in slender 1-sided 
cymose panicles, often transformed into a tuft of rudimentary leaves. 
12. J. abortivus, n. sp. Rhizoma creeping, thick and woody ; stems 
slender (1°- 2o high), terete; leaves filiform, rather rigid; panicle compound, 
diffuse, the branches almost hair-like ; flowers minute, scattered; sepals oblong, 
the inner ones obtuse, with membranaceous margins, as long as the (immature) 
subulate capsule; style slender. — Grassy margins of ponds, near the coast, 
West Florida. July-Sept.— Plant deep green. Flowers all abortive or bud- 
like. 
13. J. Conradi, Tuckerm. Rhizoma creeping, filiform; stems slender 
(6'-10' high); leaves filiform, tender; panicle compound, diffuse; the small 
flowers somewhat scattered ; sepals acutish, shorter than the oblong taper-pointed 
capsule; seeds without appendages. — Sandy margins of ponds and swamps, 
South Carolina, and northward. July.— Leaves more slender, and the divis- 
ions of the panicle shorter and more rigid than those of the preceding species. 
* * * * Leaves knotless, concave or flattened. 
14. J. marginatus, Rostk. Stems flattened (19 - 2° high) ; leaves linear, 
flat or concave; panicle mostly simple; heads few - many-flowered, rarely soli- 
-tary or by pairs; flowers triandrous; exterior sepals lanceolate or ovate-lance- 
olate, awn-pointed ; the interior oblong, obtuse, broadly margined, about as long 
as the globular dark brown capsule; seeds oblong, acute at each end. (J. aris- 
tulatus, Miche. J. cylindricus, Curtis, the many-flowered heads cylindrical.) — 
Var. prrtorus. (J. biflorus, El.) Stems taller (2°-3° high); panicle decom- 
pound, diffuse; heads very numerous, 2-4-flowered ; seeds narrower and more 
pointed. — Bitches and low grounds, Florida, and northward. July - Sept. — 
The variety is confined to the pine barrens of the lower districts. : 
15. J. bufonius, L. Annual; stems low (2/—8' high), tufted; often 
branched ; leaves very narrow; panicles forking; flowers solitary or 3-6 in a 
cluster ; sepals whitish, lanceolate, acute, longer than the oblong obtuse pale 
capsule. — Damp cultivated ground, apparently introduced. April and May. 
_ Flowers as in Juncus. Stamens 3. Capsule many-secdod, 3-celled, the par- 
titions separating from the valves at maturity, and forming, with the united 
E placentze, a free 3-winged central column. Seeds ovoid, without - P "x gu 
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