482 JUNCACE^. (liUSlI FAMILY.) 



very acute, one third or one half the length of the prismatic, triangular r.i 

 ruptly acute pod ; mi-da tail-pointed at both ends. (J. sylvatieus, Mi'/tl. J. Can- 

 adensis, Guy.) Peat-bogs, and sandy borders of ponds. Pods turning deep 

 chestnut-brown. Tails shorter than the body of the seed. 



*- - Stamens 6. (Heads chestnut-colored: the pods becoming blackish or brown, and 

 shining: seeds tailless, but sometimes short-pointed <it bulh ends.) 



10. J. arficulatllS, L. Stem erect (9' -18' high), and with the 1-3 



leaves sliyhtly compressed; panicle spreading; hiads 2 - 9-Jlowered ; sepals 

 lance-oblong, the outer acute, the inner mostly obtuse, usually mucronatc, shorter 

 than the ovatc-fjblong triangular abruptly miicronatc-pointed pod. (J. lamprocarpus, 

 Ehrh., &,<>.) Var. PKLOcAiu'US (J. pelocarpus, E. M\ij<r <V <d. 1.) is a va- 

 riety with fewer flowers in the head, and rather blunter pods slightly exceeding 

 the sepals. Wet places, Rhode Island to N. Illinois and northward: the 

 genuine European form received from Mr. Olnry and Dr. SartveU. (Eu.) 



11. J. liailitariS, Bigel. Stem stout (2 -3 high), bearing a solitary 

 cylindrical bayonet-like leaf below or near the middle, which overtops the crowded 

 panicle ; heads numerous, 5 - IQ-floiuered ; sepals lanceolate, sharp-pointed, as long a3 

 the ovate taper-pointed pod. Sandy bogs N". Maine (Rev. J. Slake), E. ? 

 chusetts, pine barrens of New Jersey, and southward. Rootstock thick, 

 creeping. Leaf stout, l-2 long. Heads 2 "-3" wide, brown. 



12. J. noriosus, L. ! Stem erect, slender (6' -15' high), 3-5-lcaved; 

 leaves terete, short; heads 1-2, or several and clustered, globose, many- (10-20-) 

 floivercd ; sepals lanceolate, awl-pointed, nearly as long as the slender triangular taper- 

 pointed pod. (J. Rostkovii, E. Meyer.) Var. MEGACEPIIALUS, Torr. : heads 

 rather numerous and larger, 50 - 60-flowered, crowded in a dense cluster at tho 

 summit of the stout and rigid stem (2 high). Gravelly borders of streams; 

 common, especially northward ; the var. on the sandy shore of Lake Ontario, 

 &c. Rootstoeks slender. Quite distinct from No. 6 and No. 7, with which it 

 has been confounded. 



13. J. Courddi, Tuckerm. Stems slender (6'-10 ; high), leafy, branch- 

 ing above into a compound diffusely spreading cymose panicle, bearing r/iicjly 

 solitary scattertd jloicers in the forks and along one side of the branches ; 

 thread-form, the upper slightly knotted ; sepals oblong, acutish, shorter than the ob- 

 long laper-beaL'td pod. (J. viviparus, Conrad, so named from a condition in 

 which most of the {lowers develop into a tuft of rudimentary or manliest leaves. 

 J. No. 15, Muhl. Grain. ? and therefore J. Muhlenbergii, Spreng. ?) Wet sandy 

 places, Canada and Wisconsin 1 N. New England to Virginia, and southward, 

 chiefly near the coast. Rootstoeks slender. 



# # # # Leaves knotless : inflorescence terninal. 

 *- Heads cymosc-pnnic/<d : Lares flat and open: stamens 3. 



14. J. nmrgiiiutus, Rostk. Stem leafy, erect, flattened (1- 3 high); 

 leaves linear, grass-like, nerved; heads globose, 3-8-flowered ; sepals oblong, 

 the 3 outer with the bracts slightly awned, the inner obtuse and point! 



long as the globular pod ; seeds minutely pointed at both ends. (J. aristulatus, 

 Alichx.) Moist sandy places, N. New England to Illinois, and southward. 

 July. Sepals soft, chestnut-purplish, with a green keel. 



