352 ORDER 150. JUNCACE^E. 



z Heads 5-15-flowered, and numerous, in April Jane NOB. 5*1, 85 



z Heads 20-80-flowered, few and large Nos. 26, r, 



1 J. setaceus Rostk. Scape weak, slender, (not setaceous), 1 2f; Ivs. shorter; panicle 



small, 20-30-flwd., flowers separate ; sepals very acute, pod globou?. Sea-coast. S. 



2 J. Reemerianus Scheele. Scape stout, rigid, 2 4f, and leaves pungent ; panicle 



compound ; flowers capitate ; pep. sharp-pointed ; pod turgid, a little shorter ; head? 

 5-8-flowered, dark brown. Marshes, Va. to Fla. (J. maritimus C-B.) 



3 J. eflTasus L. SoftR. Scapes straight, not rigid ; panicle decompound, often dif- 



fuse ; flowers' green, sep. as long as the obovoid, obtuse pod. Wet : common. 2 31. 



4 J. filiformis L. Scapes very slender, weak, the subsimpie panicle near the mid 



die ; sepals longer than the obtuse, mucronate pod. Me. to Mich. 1 2f. 



5 J. Smitliii Engelm. Scapes slender, rather rigid, 2 3f; cyme few-flwd. ; flow ere 



brown, 1" ; pod round-ovoid, mucronate, exserted. Broad Mountain, Pa. (Porter). 



6 J. Baltic us Dethard. Scapes in dense rows on the rhizome, rigid, pungent : pan 



near the top, brown ; sep. erect, very acute, equalling the elliptical, mucronate po<' 

 (H"). Sandy shores, Me. to Penn. and Wis. 1 3f. 



7 J. trifidus L. Stems tufted, 5 8', wiry, sheathed at base, 3-leaved at top, and with 



a sessile head of 3 blackish flowers ; capsule globular. Mountains, N. H., N. Y. 



8 J. Stygius L. Stems few-leaved at base, leafless at top, 7 12' ; heads 1 3. about 3- 



(lowered ; sepals shorter than the elliptic pod ; seeds large, tailed. Me., N. Y. 



9 J. repens MX. Stems low, tufted, 2 6' ; leaves linear, opposite, fascicled ; sepals 



subulate, awn-pointed, 3 4", the slender pod 2". (T) Md. to Fla. May. 



10 J. iiiarjiliiatus liostk. Stem compressed ; leaves linear, Hat : cyme compound , 

 heads' many, 2-9-flowered, chestnut-brown : pod globular. 1 3f. 



/3. Itii.ont*. Heads very numerous, 2 3-flowered, nearly black. S. 



11 J. bufuiilus L. Toad R. Slender, 38', tuft'-d : leaves 12'; branches 2, flowei 

 bearing the whole length ; flowers remote, green : the 3 outer sep. longer. Common 



1 2 J. ten u Is Willd. Stems wiry, 824' ; leaves flat-filiform, 38' ; bracts longer than 

 the loose panicle ; sepals green, longer than the roundish pod. Common. 



0. ntfunttut. Flowers 1 -rowed on the branchlets : bracts shorter than the panicle 



13 J. dlcliotomus Ell. Stem wiry, 1 2f; Ivs. terete-filiform, channelled, on long 

 sheaths : panicle forked or dense ; pod roundish, long as sepals. S. Too near No. 12. 



14 J. GerardI Loisel. Black Grogs. Sts. wiry, leafy, 1 2f : Ivs. thread-ensifonn. S 8': 

 pan. longer than the bracts ; style conspicuous ; pod blackish, long as sepals. Marshes. 



1 5 J. Cireeuil Oakes & Tuckm. Wiry scapes and filiform Ivs. rigid ; bract filiform, 

 twice longer (4') than the small panicle : flowers secund, straw-brown : sepals ovate, 

 shorter than the ovoid pod. Coasts of N. Eng. and Mich. 1 2f. 



16 J. Vaseyl Engelm. Sepals lanceolate, as long a* the oval pod; bract scarcely 

 longer than the panicle. Otherwise like No. 15. Mich. (Prof. Porter). 



1 7 J. asper Engelm. Sts. rigid, 2 3f ; Ivs. rigid and tough, 310'; hds. scattered, 3-5 

 flwd., sep. 2i", strongly veined, subequal ! shorter than the pointed brown pod. N. J 



18 J. caudatus Chapm. Sts. rigid, 2 3f; Ivs. 3, rigid, erect; panicle large, erect, 

 hds. 2-4-ttwd. ; sep. 2", unequal ; pod 3", finally black ; sds. with long white tails. S. 



1 J. Cauadensls Gay. Sts. terete, with 2 or 3 erect, smooth Ivs. ; tts. in Aug. and 

 Sept., 350 in a head, paniculate, brownish ; sepals lanceolate, 3 outer shorter, nonr 

 longer than the oblong-triangular pod ; stamens 3. Common and very variable. 

 a. coarctalu*. Heads 2-5-flwd., in a contracted panicle ; pod brown, exserted. 

 ft. brarhyrtphaltt*. Hds. 3-5-flwd., in a spreading panicle ; pod bro\Vn. exserted. 

 y. mibcautlatuK, Slender; heads 8-20-flwd., remote : seeds with short white tails. 

 S. long-fcaiuUiluii. Stouter ; hds. 8-50-flwd., approximate ; sd*. slender, long-tailed. 



StO J. pelocarpiis Meyr. Sts. slender, 2-3-1 vd.. 1020' ; panicle much branched ; fls 

 in pairs or solitary, scattered, reddish ; pod oblong, pointed with the slender style, 

 longer than the oblong sepals. Wig. to Me. and Fla. (J. Conradi Tuckm.) 



21 J. artifulAtiis L. Stems If. with 12 leaves ; heads 3-8-flowered, crowded In n 

 spreading panicle : sepals brownish, oblong ; pod deep brown, oblong, exsertod N 



