JUNCACE.E. 373 



Sandy sea-coasts. N. J. to Car. July. Ij.. Scape 23 feet high. Panicle 

 2 3 inches long, appearing as if lateral, though really terminal. 



Great Sharp Sea Rush. 



2. J. effusus Linn. : scape not rigid, finely striate ; panicle loose, very 

 much branched, spreading ; leafets of the perianth lanceolate, spreading, 

 very acute, as long as the obovoid obtuse capsule ; stamens 3. 



Wet grounds. Can. to Car. June, July. %. Scape 23 feet high, erect, 

 terminating in a long Tapering point. Panicle bursting from a fissure in the 

 side of the scape above the middle, sessile. Flowers greenish. Sometimes used 

 for making mats. Soft Rush. 



3. J. filiformis Linn. : scape filiform, smooth ; panicle few-flowered ; 

 leafets of the perianth lanceolate, acuminate, nearly equal, larger than the 

 obovoid apiculate capsule ; stamens 6. 



Borders of ponds. Northern and Western N. Y. Torr. White Mountains, 

 N. H. Biff. July. 1]-. Scape. 18 inches to 2 feet high, very slender. Panicle 

 bursting from the side of the scape above the middle. Flowers greenish. 



Slender Rush. 



4. J. Balticus Willd. : scape obscurely striate ; panicle erect, branched ; 

 leafets of the perianth nearly equal, very acute, as long as the elliptic mu- 

 cronate capsule ; stamens 6 ; style conspicuous. 



Gravelly shores of the St. Lawrence and of Lake Ontario. Torr. July. %. 

 Scape 2 4 feet high, often flexuous or twisted. Panicle with the branches 

 slender and flexuous. Flowers dark brown. Baltic Rush. 



** Stem kafy. Leaves terete, nodose. 



5. J. no'dosus Linn. : stem nearly round ; leaves distinctly nodose, terete ; 

 inflorescence terminal ; heads few, globose, many-flowered ; leafets of the 

 perianth linear-lanceolate, with a long subulate point ; stamens 3 ; capsule 

 triquetrous, attenuated at the summit, about as long as the perianth ; seeds 

 oblong. 



Sandy banks of streams. Can. to Car. July. 'l\..Stem 8 inches to 2 feet 

 high. Heads in a loose more or less compound panicle, or in a dense cluster. 

 Flowers brownish or greenish. Stamens 3 6. A very variable plant ; which, 

 however, according to Dr. Torrey, can always be distinguished from J. polyceph- 

 alus, by its attenuated capsule, arid by its oblong (not tailed) seeds. 



Knotty Rush. 



6. J. polycephalus Mich. : stem erect; leaves compressed, nodose; panicle 

 terminal, compound ; heads many-flowered, globose ; leafets of the perianth 

 lanceolate, somewhat awned ; stamens 3 ; capsule oblong-triangular, ab- 

 ruptly acuminate, scarcely longer than the perianth ; seeds tailed at each 

 end. J. echinatus Muhl. 



Boggy meadows. Can. to Geor. July, Aug. %..Stem 13 feet high. 

 Panicle more or less compound. Flowers greenish. Seeds with a subulate ap- 

 pendage or tail at each end. (Torr.) A variable species. 



Many-headed Rush. 



7- J. subverticillatus Willd: stem compressed; leaves few, subulate, no- 

 dose ; panicle corymbose ; heads about 5-flowered, fasciculate-verticillate ; 

 leafets of the perianth linear-lanceolate, striate, as long as the obtuse cap- 

 sule. J. verticillatus Pursh. 



Swamps. Can. N. Y. and Penn. July, Aug. %. Stem lfc-2 feet high, 



