482 juncace^:. (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, Midi]. J. Can- 

 adensis, Gay.) — Peat-hogs, 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, ami 

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



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

 slender leaves slightly compressed; panicle spreading; heads 2 - 9-flowered ; se/xils 

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

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

 Ehrh., Sec.) — Var. felocArpus (J. peloearpus, E. Meyer #• ed. I.) 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. Sartwell. (Eu.) 



11. J. milital'is, Bigcl. Stem stout (2°-3° high), bearing a solitary 

 cylindrical bayonet-like feq/"below or near the middle, which overtops, the crowded 

 panicle; heads numerous, 5 - 10-flowered '; sepals lanceolate, sharp-pointed, as long as 

 the ovate taper -pointed pod. — Saudy bogs N. Maine (Rev. J. Blake), 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. Hoddsus, L. ! Stem erect, slender (6'- 15' high), 3-5-leaved; 

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

 flowered ; sepals lanceolate, awl-poiutrd, marly as long as the slender triangular taper- 

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

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

 summit of the stout and rigid stem (2° high). — Gravelly holders 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. COEfil'atli, Tuekerm. Stems slender (6'- 10' high), leafy, branch- 

 ing above into a compound diffusely spreading cymosc panicle, In a ring chiefly 

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

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

 long taper-braked 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 hruotless : inflorescence terriinal. 

 t- Heads cymose-panieled : leaves flat and open : stamens 3. 



14. J. Miargiiaatas, 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 pointless, as 

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

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

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



