JUNCACE.K. (llUSII FAMILY.) 641 



-t- -t- Innerniost s/ieat/is leaf-hear imj ; stamens C. 



5. J. set^ceus, Kostkovins. Sc.ipo slendor (1 -.3" high) ; panicle loose, 

 rather fow-dowcrcd ; flowers greenisli (2" lonj;) ; sepals hmreolate, sharj)- 

 pointed, esj)ei-ially the 3 sliinin«^ exterior ones, sjireading in fruit, jus long as 

 tlie nearly globose heak-jjointed greenish or light-hrown eaj)sule ; anthers :ih 

 long as the filaments ; style conspicuous ; seeds (^" long) almost globose, ribljeil 

 and cross-lined. — Va. to Fla., west to Mo. and La. 



* * Flowers in clusters, (j-androus ; innennost. sheaths at base rufstem le.af-hearirnf 



6. J. Rosmeri^nus, Scheele. Scape stout and rigid (2-3° high), its 

 apex as well as tlu' leaves pungent ; j)anicle compound, open and spreading, 

 brown; 3-6 greenish or light-brown tlowers (l|"long) in a cluster; outer 

 sepals lanceolate, sharp-pointed, longer than the obtusish inner ones, as l<jng 

 as the elliptical rather triangular obtuse mucronate brown capsule; anthers 

 much longer than the broad filaments; styles shorter than the ovary; seeds 

 ( \" long) oval, obtuse, very delicately ribbed. — Brackish marshes, N. J. to 

 Fla. and Tex. 



7. J. maritiniUS, L. Resembling the last, but with a rigid contracted 

 green panicle, an ovary attenuated into a style of nearly its own length, a 

 greenish acute capsule which usually exceeds the acute sepals, and seeds with 

 distinct tails and stronger ribs. — Known in this country only from Coney 

 Island, N. Y., where it is apparently indigenous. (Eu.) 



§ 2. Stems siinple (rarelij branched) , leafij at base or throughout ; leaves JIat, or 

 somewhat terete or setaceous and channelled, never knotted ; panicle or head 

 terminal. — Gkassv-leaved Junci. 



* Flowers in close heads {produced in late summer). 



•*- Leaves threadlike, hollow; stamens 6; seeds few, large and caudate; the 



single head {sometimes 2) I -4-Jlowered. 



8. J. st^gius, L. Stems slender (6-16' high) from slender branching 

 rootstocks, 1 -3-leaved below, naked above ; heads 1 or rarely 2, of 3 -4-flowers, 

 about the length of the sheathing scarious awl-pointed bract; flowers pale and 

 reddish (2^-3" long); sej)als lanceolate, the inner obtusish. f the length of 

 the oblong acuminate ca])sule, as bjng as the slender stamens ; filaments many 

 times longer than the oblong anthers ; recurved stigmas shorter than the style ; 

 seeds ol)long, with a very hjose coat prolonged at both ends (I^" long). — Peat- 

 bogs, Xewf. to northern N. Y., west to Mich, and N. Minn. (Ku.) 



9. J. trifidus, L. Stems densely tufted from matteil creeping rootstocks, 

 erect (5 - 10' liigh), sheathed and mcwtly leafless at base, 2 - 3-k'aved at tiie 

 summit, the upper thread-like leaves subtending the sessile head ; flowers brown 

 (1^-2" long) ; sepals ovate-lanceolate, acute, ecjualling or rather shorter than 

 the ovate beak-pointed deep brown capsule ; anthers much longer than the 

 filaments ; seeds few, oldong, angled (1" long), short-tailed. — Alpine summits 

 of N. Eng. and N. Y., and far northward ; also in N. J. (Eu.) 



■i- H- [.eaves Jhit and grass-like ; stam< ns 3; stems flattened, simple, leaf;/. 



10. J. rdpens, Michx, Stems ascending (4- G' high) from a fibrous an 

 nnal root, at length creeping or floating; leaves short, linear, those of the stem 

 nearly opposite and fascicled; heads few in a loose leafy panicle, 3- 12-flow- 



