482 JUNCACE^E. (RUSH FAMILY.) 



very acute, one third or one half the length of the prismatic triangular and ab- 

 ruptly acute pod ; seeds tail-pointed at both ends. (J. sylvaticus, MM. J. Can- 

 adensis, Gay.) 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 brotvn, and 

 shining: seeds tailless, but sometimes short-minted at both ends.) 



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

 slender leaves sliyhtly compressed; panicle spreading; heads 2 - ^-flowered ; sepals 

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

 than the ovate-oblong triangular abruptly mucronate-pointed pod. ( J. lamprocarpus, 

 Ehrh., &c.) Var. PELOCARPUS (J. pelocarpus, E. Meyer fr ed. 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. Olney and Dr. Sarticdl. (Eu.) 



11. J. militaris, Bigcl. 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 - 1 0-flowered ; sepals lanceolate, sharp-pointed, as long as 

 the ovate taper -pointed pod. Sandy bogs N. Maine (Rev. J. BlaJce\ E. Massa- 

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

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



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

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

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

 pointed pod. (J. Rostkovii, E. Meyer.) Var. MEGACEPHALUS, 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. Rootstocks slender. Quite distinct from No. 6 and No. 7, with which it 

 has been confounded. 



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

 ing above into a compound diffusely spreading cymose panicle, bearing chiefly 

 solitary scattered flowers in the forks and along one side of the branches ; leaves 

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

 long taper-beaked pod. ( J. viviparus, Conrad, so named from a condition in 

 which most of the flowers develop into a tuft of rudimentary or manifest leaves. 

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

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

 chiefly near the coast. Rootstocks slender. 



* * # * Leaves knotless : inflorescence terninal. 

 +- Heads cyniose-panicled : leaves flat and open : stamens 3. 



14. J. marginf&tUS, Rostk. Stem leafy, erect, flattened (l-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 pointless, as 

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

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

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



