340 y,o)-/h American Ci/jjeracece. 
E. angustifolium, Schrad.fl. 1. j). 153; Smitli, Eng. Jl. 1. p. 69, and 
Eng. lot. 56A; Hook.Jl. Scot.^.21 ; WiUd. sp, 1. p. 313; Ram. S^Schult. 
syst. 2. p. 15S; Pursli,fl. l.p.58; Torr.ljl. l.p. 67; Big.fl. BosI.ed. 
2. p. 23; Beck, hot. p. 427; R. Broicn I in npp. Parrifs \st. voij, p. 
274 ; Hook, in app. Parry^s 2nd voy. p. 27 ; Richardson in apj}- Frank. 
1st jour. ed. 2. p. 2; DarlingLjl. Cest. ed. 2. p. 24. 
E. tenellum, Nutt. gen. siqyp.; Schidt. mant. 2. p. 93. 
E. polystachyon, var. tenellum, Gray ! Gram. S^' Cyp. part 1. no. 91. 
E. angustifolium, Scliweinitz ! in Long^s 2nd c.vpcd. 2. p. 381. 
Culm \\ feet high, veiy slender, leaf}' ; the upper part somewhat 
scabrous. Leaves scarcely a line wide, the sides folded together so as 
to form a tiiangular channel, and an inch or more of the upper extremity 
sharply triangular; the lowest ones 6 — 12 inches long ; those of the culm 
3 — 6 inches 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, Avhich are sometimes 
2 — 4 inches long, not always smoothish, but sometimes rather scabrous 
or pubescent. Sccdes brown, obtuse at the tip, sometimes obscurel}'' .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 
down}'. Nut linear-elliptical, (scarcel}^ half as broad as in E. polysta- 
chyum,) broadest a little above the middle. 
Hab. Sphagnous swamps. Arctic America !, Canada ! 
and the New England States ; Western and Northern parts of 
the State of New York, Dr. Gray!; Danville, Vei-mont, 
X Carey, Esq. ! — June — July. 
Obs. Easily distinguished from jG. polijsfachi/ian 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. angvslifolium 
and E. jpohjstachyum. He notices two ^-arieties of it ; one with 
smooth, the other with scabrous peduncles. 
^? hi'evifoVium. Cauline leaves very short, tricjuetrous ; 
involucre much shorter than the spikes, lanceolate, (discolored); 
hairs somewhat crisped. 
