482 JUNCACE^E. (RUSH FAMILY.) 



very acute, one third or one half the length of the prismatic triangular and Z.T) 

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

 adensis, Gay.) Peat-hogs, and sandy borders of ponds. Pods turning deep 

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



*- - St<tine)is G. (Heads chestnut-colored: the pods becoming blackish or brown, and 

 shining : seeds tailless, but sometimes thort-pointed at both ends.) 



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

 slender leaves sliyhlly compressed; panicle spreading; heads 2 -%-flowercd ; sepal* 

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

 limn the ovate-oblong triangular abruptly mucronatc-pointi-d pod. ( J. lamprocarpus, 

 Khrh., &c.) Var. PELOCARPUS (J. pelocarpus, E. Meyer $ 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. Sartice/l. (Eu.l 



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

 cylindrical bayonet-like feo/*below or near the middle, which overtops the crowded 

 panicle; heads numerous, 5- 1 Q-floicered ; sepals lanceolate, sharp-pointed, as long as 

 the ovate taper-pointed pod. Sandy bogs N. Maine (Rev. J. lakc), 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. IIOlIosils, L. ! Stem "erect, slender (G'-15' high), 3 - 5-leaved ; 

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

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

 \tointtdpod. (J. Rostkovii, E. Meyer.) Var. MEGACEPHALI:S, 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. Coiir:idi, Tuckcrm. Stems slender (6' -10' high), leafy, branch- 

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

 sulilari/ scattered Jlutrers in the forks and along one side of the branches ; hares 

 thread-form, the upper slightly knotted; scjxils oblonu, acutish, shorter than the ob- 

 U,-./ 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. Xo. 1 :\ Mnhl. Gram. ? and therefore J. Muhlenhergii, Spreitg. ?) Wet sandy 

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

 diirtly near the coast. Rootstocks slender. 



# * * # Leaves knot less : inflorescence terninal. 

 - I ^ ads cymoso-pamded : leaves flat and open : stamens 3. 



14. J. ItKtrxillfltlls, Rn-tk. Stem leafy, erect, flattened (l-3high); 

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

 the 8 Otttcr with the bracts slightly awned, the inner obtuse and pointless, aa 

 lout.- as the globular pod ; seeds minutely pointed at both ends. (J. aristulatos, 

 A/icli.r.) Moist sandy places, N". New England to Illinois, and southward 

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



