MONOCOTYLEDONOUS OR ENDOGENOUS PLANTS. 583 



hairs, much longer than the scale, and forming a woolly or 

 silky tuft; stameiis commonly 3; style 3-cleft, deciduous; 

 nut 3-angled or lenticular. Perennials, with leafy ciihns, 

 ill our species, and clustered or umbelled spikes. 



E. ViRGiNicuM, L. Cuhii nearly terete, rigid; leaves 

 narrowly linear, elongated ; spikes densely clustered, nearly 

 sessile, erect; involucre 2-3-leaved; tvool reddish, thrice 

 the length of the brownish scales; nut compressed-3-angled, 

 acute. Bogs and swamps. June-August. Culm 2°-3° 

 high; leaves 10-18' long. 



FIMBKISTYLIS, Vahl. 



iSJyiX'es many-flowered; 5c«^e5 imbricated in several rows; 

 perianth none; stamens 1-3; sti/le 2-cleft, commonly flat 

 and fringed on the margins, tumid at the base, deciduous; 

 mtt lenticular. Culms jointless, leafy at the base ; invo- 

 lucre 1-several-leaved ; spikes terminal, umbellate or clus- 

 tered. 



* Spikes timbdled. 



F. SPADICEA, Vahl. Perennial; culms clustered, nearly 

 terete, rigid (2°-3° high) ; leaves long, linear or filiform, 

 concave, rough on the margins; umlel simple or com- 

 pound, erect; involucre 2-3-leaved; spikes ovate or oblong, 

 dark brown ; scales smooth, rigid, rounded ; nut obovate, 

 acute, slightly furrowed and pitted. (Scirpas castaneus, 

 Michx.; S. ferrugineus. Ell.) Salt marshes. August- 

 October. 



TEICHELOSTYLIS, Lestib. 



Spikes terete, many-flowered ; scales imbricated in few 

 (4-8) rows ; peria7ith none ; style 3-cleft, tumid at the base, 

 deciduous; nut 3-angled. Culms jomtless, leafy at the 

 base ; spikes umbelled. 



T. AUTUMNALis. Ciilms sleuder, flat, 2-edged, G-12' 

 high, tufted; involucre 2-leaved, mostly shorter than the 



