340 Xorth America )i Ci/peraceit. 



E. angustifoliura, Schrad.ft- 1. p. lo3; Smilh, Eng, fl. 1. p. 69, and 

 Eng. hot. 564; HooIc.Jl- Scot. p. 21. ; Willd. sp. l.p. 313; Ram. ^-Schult, 

 syst. 2. p. 158 ; Pursh,fl. 1. p. 58; Torr. ! fl. l.p. 67; Big.fl. Bost. ed. 

 2. p. 23; Bed-, hot. p. 427; i?. Brow?i ! in cqyp. Parry's Isl. Toy. p. 

 274 ; HgoIc. in app. Parry's 2nd voy. p. 27 ; Richardson in app. Frank. 

 1st jour. ed. 2. p. 2; Darlingt.fl. Cest. ed. 2. p. 24. 



E. tenellum, Nutt. gen, siipp.\ Schult. mant. 2. p. 93. 



E. polystachyon, var. tenellum, Gray ! Gram. &f Cyp. part 1. no. 91. 



E. anguslifolium, Schweinitz ! in Long's 2nd exped. 2. p. 381. 



Culm 1\ feet high, very slender, leafy ; the upper part somewhat 

 scabrous. Leaves scarcely a line wide, the sides folded together so as 

 to form a triangular channel, and an inch or more of tlie upper extremity 

 sharply triangular; the lowest ones 6 — 12 inches long; those of the culm 

 3 — 6 inclies in length. Involucre generally of one leaf, which is scarcely 

 longer than the shortest spike. Spikes 4 — 10, ovate, one or two nearly 

 sessile ; the rest on simple or divided peduncles, which are soirietimes 

 2 — 4 inches long, not always smoothish, but sometimes rather scabrous 

 or pubescent. Scales brown, obtuse at the tip, sometimes obscurely 3- 

 nerved. Hairs 50 — 60 in each flower, scarcely flattened (narrower than 

 in the preceding species), nearly an inch long when mature. Stamens 

 3; anthers linear, elongated. Style filiform, deeply 3-cleft; the divisions 

 downy. Nat linear-elliptical, (scarcely half as broad as in E. j^olysta- 

 cJiyum,) broadest a little above the middle. 



Hab. Sphagnous swainps. Arctic America !, Canada ! 

 and the New England States ; Western and Northern parts of 

 the State of New York, Vr. Gray!; Danville, Vermont, 

 J. Carcij, Esq. ! — June — Jnly. 



Obs. Easily distinguished from E. pohjstacltyum by its 

 narrow triangular leaves, one-leaved involucre, and narrow nut. 

 Mr. Brown thinks that the Arctic plant collected in Parry's 1st 

 voyage may prove a distinct species, between E. angvstifolium 

 and E. jiohjstachijum. He notices two varieties of it; one with 

 smooth, the other with scahrous pedimcles. 



^^ hrevlfolium. Cauline leaves very short, triquetrous; 

 involitcre much shorter than the spikes, lanceolate, (discolored) ; 

 hairs somewhat crisped. 



