50 CYPEKACEAE 



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

 City and Martin City. Uncommon. May-June. 



20. C. granularis Muhl. l-2 high, glaucous : leaves flat, \\"-Z" 

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

 short-oblong, 1' 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. oligocarpa Schk. Like C. amphibola : pistillate spikes 4 // -8 // 

 long, looser flowered : perigynia \"-\\" long, abruptly contracted into 

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



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

 about 2 /x wide, their sheaths scabrous-pubescent: pistillate spikes 2-4, 

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

 awned scale. Frequent m 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 // -13 // long: perigynia l^ // -2 // long, oblong, many- 

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

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

 June. 



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

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

 jj'-l/long: perigynia triangular, \\ f/ 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. varians Bailey. l-2 high : leaves often 3" wide : pistillate 

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

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

 uncommon. 



Var. patulifolia (Dewey) Carey. Glaucous : leaves ?>"-$>" broad : 

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

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

 nearLevasy. Rare. 



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

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

 late spikes : staminate spike nearly sessile : perigynia 3 X/ -4 X/ 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. Pennsylvanica Lam. 6 / -15 / high, strongly stoloniferous : 

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

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



