374 JUNCACE^E. 



slender, about 2-leaved. Panicle 48 inches long, the branches subverticillate 

 and diverging. Flowers greenish, in somewhat hemispherical heads. 



Whorled Rush. 



8. J. acuminatus Mich. : stem erect ; leaves somewhat compressed, no- 

 dose ; panicle terminal, compound ; heads 3 6-flowered, pedunculate and 

 sessile ; leafets of the perianth linear-lanceolate, mucronate, shorter than 

 the acutely triangular capsule ; stamens 3 ; seeds tailed at each end. J. 

 sylvaticus Muhl. 



Boggy meadows. Can. to Car. July. '2J-. Stem 12 15 inches high. Leaves 

 distantly jointed. Panicle more or less compound, rather erect, spreading. 

 Flowers pale-green or purplish, mostly 3 in a head. Sharp-fruited Rush. 



9. J. pelocarpus Meyer : stem erect, bearing a single leaf, compressed ; 

 leaves setaceous, compressed, obscurely nodose ; panicle pyramidal, spread- 

 ing ; heads about 2-flowefed ; leafets of the perianth oblong, obtuse, the 

 inner ones a little longer, shorter than the triquetrous ovate capsule. ( Torr. 

 N. Y. Fl.) 



Ver. and N. Y. ? 1\.. Stem 15 18 inches high. Panicle loose and elon- 

 gated. Heads 3 6-flowered. Stamens 6. Brownish Rush. 



10. J. Conradi Tucker man : stem erect, leafy; leaves erect, compressed, 

 slightly nodose ; inflorescence terminal, decompound, divaricate ; flowers 

 solitary ; leafets of the perianth lanceolate-acute, shorter than the oblong 

 acuminate-rostrate capsule. ( Torr. N. Y. M.) J. -viviparus Conrad. 



Borders of ponds in sandy soils. N. H. Mass. N. Y. and N. J. July, Aug. 

 (T). Stem cespitose, 6 10 inches high, slender. Leaves few. Inflorescence 

 spreading, with the branches slender. Flowers often viviparous or abortive, 

 red dish- brown. Stamens 6. Torr. Conrad's Rush. 



*** Leaves flat or channelled on the upper side. 



11. J. tennis Wittd.: stems cespitose, slender, leafy at the base, erect, 

 somewhat compressed ; leaves setaceous-linear, channelled ; panicle termi- 

 nal, more or less compound ; flowers solitary, unilateral ; leafets of the per- 

 ianth lanceolate, a little longer than the obtuse capsule. J. bicornis Mich. 



Low grounds. N. Y. to Car. June, July. 1]-. Stems cespitose, 10 or 12 inches 

 high. Panicle cymose ; the peduncles unequal. Flowers solitary, greenish, 

 somewhat racemose or unilateral on the branchlets. Slender Rush. 



12. J. Grecnei Tiickerm. d> Oakes : stem erect, leafy at the base, terete, 

 rigid ; leaves setaceous-linear, channelled above, rounded on the back ; 

 panicle terminal, compound, cymose ; flowers solitary, erect, unilateral ; 

 leafets of the perianth shorter than the ovoid-oblong rather obtuse capsule. 



Sandy borders of salt marshes. Mass, and N. Y. July. 7}.. Stems cespi- 

 tose, 12 18 inches high,striate. Panicle consisting of several much contracted 

 cymes. Flowers unilateral, greenish. Greene's Rush. 



13. J. Gerardi Loisel. : stem simple, leafy, compressed ; leaves linear- 

 setaceous, channelled : panicle terminal, compound, cymose, longer than 

 the bracteal leaves ; leafets of the perianth oblong, somewhat obtuse, mostly 

 shorter than the obovoid obtuse triangular capsule ; stamens 6 ; seeds ob- 

 long-ovoid, strongly ribbed. J. bulbosus Pursh. 



Borders of salt marshes. N. Y. to Car. Aug. %. Stem 812 inches high, 

 slender. Panicle rather crowded, the branches unequal. Flon-^rs and capsules 

 dark-hrown. Black Gras*. 



