390 JUNCACEJE. 



pale-green densely many-flowered spherical heads; sepals rigid, awl-ahaped, and 

 somewhat awned, especially the outer, as long as the triangular acuminate capsule ; 

 teeds barely pointed at each end. 



Wet borders of streams, rather common. July, Aug.. Stem 1 to 3 fret high, 

 from a thickish creeping rootstoc^. Remarkable for its burr-like green heads,, 

 usually Y^ inch in diameter. 



4>. J. paradoxus, E. Meyer, in Gray's Flora. 



Stem stout and round ; leaves tere te or somewhat flattened ; panicle decompound 

 heads numerous, globular, 8 to 15- flowered; sepals lanceolate, somewhat awl-point 

 ed, rigid ; seeds conspicuously tailed at both ends. 



Wet places, common. July, Aug. Stem 1 to 2% feet high. Heads less dense, 

 fewer-flowered, and sometimes smaller than the foregoing. " Remarkable for the- 

 loose white seed-coat prolonged at both ends into a tail longer than the body of 

 the seed," 



5. J. ACUMINATUM, Michx. Sharp-fruited Rush . 



Stem erect, terete; leaves slender, nearly terete; panicle terminal, with rather 

 ■lightly spreading branches; heads 3 to 8-flowered, chestnut-colored; sepals linear- 

 lanceolate, very acute, shorter than the acutely triangular capsule ; seeds tail 

 pointed at both ends, 



Peat bogs and borders of ponds. July, Aug. Stem 10 to 15 inches high. Fl»wert 

 pale-green or purplish, mostly 3 in a head. Capsule turning deep chestnut- brown..; 



* * * * Leaves jointless, flat and open. Stamens 3. 



6. J. maroinatus, Rostkow. Grass-leaved Rush. 



Stem leafy, erect, flattened; leaves linear, grass-like, nerved; heads globose, S 

 to 8-flowered; sepals oblong, the 3 outer with the bracts slightly awned, the inner 

 obtuse and pointless, as long as the globose cagsule; seeds minutely pointed a* 

 Doth ends, 



Moist sandy places, common. July. Stem 1 to 3 feet high, tuberous at the base, 

 •with numerous root-leaves. Fanich simple or compound. Sepals soft, chestnut, 

 purplish, with a green keel. 



***** Zeavto channelled or involute, thread-form or almost setaceous. Stamens C. 



% J*, tenuis, Willd. Slender Rush. 



Stems slender, wiry, simple, leafy only near the base ; leaves setaceous-linear, 

 channelled; cyme shorter than the involucral leaves ; flowers solitary one-sided r 

 nearly sessile ; sepals lanceolate, very acute, alittle longer than the obtuse capsule 



Low grounds and fields, very common. June, July. Stem caespitose, 10 to 13" 

 inches high. Flowers green, shining, somewhat racemose or one-sided on tha. 

 branchlets. 



&-. J-. Gerardi, Loisel. BlaeU. Grass. 



Stems simple, flattish, leafy, rigid ; leaves linear-bristly, channelled ; paiiicle 

 terminal, cymose, longer than the Involucral leaves, rather crowded ; sepals ovate - 

 oblong, obtuse, nearly the length of the obovoid obtuse capsule. 



Borders of salt-marshes, common. Aug. Stem 10 to 18 inches high, slender. 

 Foliage deep-green. Outer sepals deep chestnnt-brown, with a deep green keel. 



9. J. bufonius, L. Toad Rush. 



Annual; stems diffuse, low and slender, leafy, often branched at the base ; pani-- 

 tie forking, spreading, the flowers remote; sepals lanceolate, awl-pointed, much 

 longer than the oblong obtuse capsule. 



Low grounds and roadsides, very common. June, Aug. Stem 3 to finches high, 

 tufted, divided towards the top. Fanicle loose, spreading, few-flowered, pale-grtw 

 JTiowers greenish. 



