CYPERACK^. (sedge FAMILY.) 573 



A. Spike solilari/, simple ; ?7s scales or bracts small and scar ions or colored (never 

 (jrrcn orfoliacnoiis). Psyllopwora, Loiseleur. 

 § 1. Spil,-e'd,'acioiis, or the fertile merehj with a few sfaminatejlowers at the base. 



1. C. gynocrates, Yv'"ormskiokl. Culm and bristle-form radical leaves 

 smootli, or ininutely rough at the top; sterile spike linear; fertile spike ovoid, 

 looiuly flowered ; perigynia oblong, short-beaked, with a white membranaceous 

 obtusely 2-toothed apex, narrowed at the base, nerved throughout, smooth, 

 spreading horizontally at maturity, longer than the acute or acutish scale ; stig- 

 mas 2. — Swamps, Wayne and Genesee Co., Kew York (Sartwell, &.C.), Michi- 

 gan, and northward. (Eu.) 



2. C. SCirpoidea, Michx. Leaves flat; spike narrowly cylindrical ; peri- 

 gynia ovoid, with a minute point, densely hairy, dark purple at maturity, about 

 the length of the pointed ciliate scale ; stigmas 3. (C. Wormskioldiana, Ilornem. 

 C. Michaiixii, Schw.) — Alpine summits of the mountains of Maine and New 

 Hampshire, Willoughby Mountain, Vermont ( Wood), Drummond's Island, 

 Michigan, and northward. (Eu.) 



§ 2. Spike amlrogtjnous, stnminate at the summit. 

 * Sli(/mas 2 : leaves hri>yllr-form. 



3. C. eapit^ta, L. Spike small, roundish-ovoid; perigynia broadly ellip- 

 tical with a notched membranaceous point, compressed, smooth, spreading, 

 longer than the rather obtuse scale. — Alpine summits of the White Mountains, 

 Kew Hampshire, Bobbins, Oakes. (Eu.) 



* * Stiijmas 3 : leaves very narrow, shorter than the culm. 



4. C. pauoiflbra, Lightfoot. Spike few-flowered ; sterile flowers 1 or 2 ; 

 perigynia awl-shaped, reflexed; scales deciduous. (C. leucoglochin, £"/(/•/(.) — 

 Peat-bogs, from New England and W. New York northward. (Eu.) 



5. C. polytrichoides, Muhl. Culm capillary ; spike very small, few- 

 iiowcred ; perigynia erect, alternate, oblong, compressed-triangular, obtuse, 

 slightly nerved, entire at the apex, green, twice the length of the ovate scale. 

 (C. leptalea, WuU. C. microstachya, Michx.) — Low grounds and bogs: 

 very common. 



* * * Stigmas 3 : leaves very [about 1') broad, longer than the naked culm. 

 G. C. Fraseriana, Sims. Pale or glaucous and glabrous ; leaves without 

 a liiidrib, many-nerved, smooth, with minutely crisped cartilaginous margins 

 (9' - 18' long), convolute below around the base of the scape-like culm: spike 

 oI)long, the fertile part becoming globular ; perigynia ovoid, inflated, nuicro- 

 nately tipped with a minute entire point, longer than the scarious oblong obtuse 

 scale ; often enclosing a short appendage at the base of the achenium. — Rich 

 woods, mount;iins of Pennsylvania ? Virginia, and southward : rare, and a most 

 remarkable plant. 



B. Spike solitary, simple, androgynous, staminatc at the summit: bracts and 

 scales of the piatillnte flowers g'tcn, leif-like, tajjering from a broad base, the lowest 

 much longer than the spike, the uppermost equalling the slightly inflated peri- 

 gynia : style jointed at the base : stigmas 3. (Leaves long and grassy, much 

 •xceeding the short almost radical culms.) Phyllostachys, Terr. & Gr. 



