50 CYPEKACEAE 



oblong, pointed but beakless, 2-ranked . scales cuspidate. — Near Lake 

 City and Martin City. Uncommon. May-June. 



20. C. granularis Muhl. 1°-2J° high, glaucous : leaves flat, ]J"-3" 

 wide : staminate spike solitary : pistillate spikes 2-4, erect, compact, 

 short-oblong, V or less long : perigynia 1'' long, ovoid, short-beaked and 

 strongly nerved .^Moist woods and meadows, especially in the northern 

 part. Quite frequent. May-June. 



21. C. oligooarpa Schk. Like 0. ampMbola : pistillate spikes 4'^-S" 

 long, looser flowered : perigynia l^'-lj" long, abruptly contracted into 

 a short beak, many-striate. — Common in rich woods. April-June. 



22. C. Hitchcookiana Dewey. Culms erect, l°-2° high : leaves 

 about 2" wide,. their sheaths scabrous-pubescent: pistillate spikes 2-4, 

 like the last: perigynia ovoid, stoutly beaked, shorter than the rough- 

 awned scale. — Frequent in rich woods from Courtney to Sibley. May- 

 June. 



23. C. Meadii Dewey. Usually less than 1° high : staminate spike 

 solitary, stout, long-stalked : pistillate spikes 2-3, stout, densely several- 

 many-flowered, 3''-ld" long: perigynia \Y'-2" long, oblong, many- 

 nerved, the beak usually strongly bent, longer than the scale. — Common 

 OQ prairies and in dry oak woods, especially in the southern part. May- 

 June. 



24. C. laxiflora Lam. Culms 6'-2° high, glabrous : leaves 3" or less 

 wide: staminate spike stalked : pistillate spikes loosely few-flowered, 

 ^'-I'long: perigynia triangular, ly long, obovate, strongly nerved, with 

 a much bent beak; scales scarious-margined. — A common species in 

 woods and thickets. May-June. 



Var. blanda (Dewey) Boott. Lower : pistillate spikes V or less long, 

 more densely flowered, the upper sessile and contiguous to the inconspicu- 

 ous sessile staminate spike. — Very common In open woods and meadows. 



Var. vaiians Bailey. 1J°-2J° high : leaves often Zi" wide : pistillate 

 spikes Y-\Y long, the two upper sessile and contiguous to the usually 

 sessile staminate spike. — Rich copses in the northeastern portion. Not 

 uncommon. 



Var. patullfolia (Dewey) Carey. Glaucous : leaves Z"-^" broad : 

 staminate spike conspicuous, peduncled : pistillate spike often 1' or more 

 long, loosely flowered : perigynia beak nearly straight. — In rich woods 

 near Levasy. Kare. 



25. C. Albursina Sheldon. 1° or less high : leaves numerous, e^'-lS" 

 wide, the bracts similar and much longer than the loosely-flowered pistil- 

 late spikes : staminate spike nearly sessile : perigynia Z"-i" long, strongly 

 nerved and short-beaked. — A strongly marked species found quite abund- 

 antly in the wet rocky bluff woods at Courtney. May-June. 



26. C. Pennsylvanioa Lam. 6'-15' high, strongly stoloniferous : 

 leaves narrow and somewhat involute : staminate spike brownish-purple- 

 nearly sessile, ^'-1' long : pistillate spikes 1-3, sessile, short and few- 



