ORDER 151. JUNCACEJE. 725 



acute. Borders of streams and lakes, N. Y. to Wis., S. to Fla. St. 16' to 3f 

 high. Heads 5 to 6" diam., globular, 1 to 5 to 12, clustered or panicled. Sepals 

 with tawny awns, greenish at base. (J. nodosus, (3. megacephaius Torr.) 



12 J. nodosus L. St. erect, slender ; Ivs. slender or often filiform, distinctly nod- 

 ous, the upper often exceeding the inflorescence ; hds. few (1 to 5 to 9), in a sim- 

 ple cluster, tawny or brown, 5 to IQ-flowered ; sep. ovate-lanceolate, acuminate- 

 awned, 3-veined, shorter than the rostrate capsule; stam. G ; seeds oval, acute. 

 Sandy swamps and shores, Can. to Car. Sts. 12 to 18' high. Heads 3 to 5" 

 diam. Appears very different from the last. (J. Rostkovii E. Meyer.) 



13 J. articulatus L. /?. PELOCARPUS Gray. Stem erect, compressed, 1 to 3- 

 leaved; Ivs. terete-compressed, setaceous, obscurely nodous; panicle spreading; 

 heads 2 to 6-flowered ; &p. oblong-lanceolate, the outer acute, the inner obtuse, 

 scarcely as long as the triangular-oblong, bluntly mucronate capsule ; stam. 6 ; 

 seeds slightly apiculate. N. Eng. to Mich, and Can., in wet places, not com- 

 mon. Sts. 9 to 18' high. Hds. chestnut colored. Anth. yellow. (J. pelacarpus 

 E. Meyer.) 



14 J. militaris Bigl. BAYONET RUSH. St. stout, terete, sheathed at base, bear- 

 ing below the middle a single terete, nodous, erect kaf which much exceeds the in- 

 florescence ; panicle erect, compound ; hds. many, brown, 4 to 9-flowered ; sep. 

 lanceolate, acute, as long as the acuminate capsule. Bogs coastward, Mass, to 

 Ga. St. 2 to 3f high. Leaf 15 to 30', overtopping the- stem by six inches or 

 more. Heads small. Stamens mostly 6. 



15 J. marginatus Rostkow. St. compressed; Ivs. flat, smooth, gramineous; 

 panicle, corymbous, simple, proliferous ; hds. 2 to 9-flowered, tawny or chestnut- 

 colored ; bracteoles awned ; sep. obtuse, soft, about as long as the obtuse cap- 

 sule; stam. 3. In low grounds, N. E. to Ga., "W. to 111. Sts. 1 to 3f high.. 

 Radical Ivs. numerous, sheathing, cauline 1 or 2. Panicle consisting of several 

 globous, 3 to 6-flowered heads, both pedunculate and sessile, longer than tha 

 erect bracts at base. Sep. edged with dark purple, with a green keel. Jn. 

 Aug. 



p. fciFLoRUS. Stouter (2f high) ; hds. very numerous, mostly 2 or 3-flowered, 

 nearly black. South, common. 



16 J. repens MX. Low, tufted with creeping stolons ; Ivs. subulate-linear, 

 fascicled at the lower joints ; cyme simple ; hds. few, 3 to 8-flowered ; sep. subu- 

 late, awn-pointed, the 3 inner much longer; caps, slender, trisulcate, much 

 shorter than the perianth. "Wet places, Ga. and Fla. Sts- many, 2 to 6' high. 

 Els. 3 to 4" long. 



17 J. Stygus L. St. filiform, erect, rigid, leafy ; Ivs. setaceous, slightly chan* 

 neled, obscurely nodous ; hds. few (1 or 3), terminal, about 3-fiowered ; sep- 

 oblong, acute ; stam. 6 ; caps, triangular-elliptic, acute, longer than the perianth ; 

 seeds oblong, the loose testa produced into an appendage at both ends. Perch 

 Lake, Jefferson Co., N. Y. (Gray) and Newfoundland. Els. unusually large, 

 straw-color. 



18 J. trifidus L. St. sheathed at base; leaf solitary, linear setaceous, near the 

 top ; sheath ciliate ; bracts foliaceous, long, grooved ; hd. solitary, sessile between 

 2 long bracts, about 3-flowered, terminal ; capsule blackish, globular, beaked. 

 White Hills, N. H., and Mt. Marcy. N. Y. Sts. crowded, threadlike, G' high. 

 Radical Ivs. 1 to 2, very short, cauline leaf resembles the 2 bracts, apparently 

 forming with them a foliaceous, 3-bracted invol. Jl. 



19 J. Conradi Tuckm. St. low, erect, slender, leafy; Ivs. few, subfihTorm, ob- 

 scurely nodous; fls. separate, scattered, central and unilateral on the slender 

 branches of the di-trichotomous panicle ; sep. lanceolate, margins scarious, rather 

 shorter than the acuminate caps. Wet places, Can. and U. S., chiefly coastward. 

 Sts. 6 to 9' high, wiry, turfy. Stam. 6. Els. often changed to little tufts of 

 leaves. 



20 J. bufonius L. TOAD RUSH. Low, slender, tufted; sts. forking; branches 

 floriferous their whole length ; fls. separate, greenish, remote ; sep. lance-subulate, 

 awn-pointed, the 3 outer longer; caps, triangular oblong, obtuse, mucronulate, 

 much shorter than the perianth ; seeds oval, obtuse. GD Damp, waste places, in all 



