CYPERACEAE (SEDGE FAMILY) 



245 



99. C. gran., 

 v. Haleana. 



500. C. (Jrawei. 



long, very strongly nerved, the nearly entire short beak usually bent; scale 

 thin and pointed, about \ the length of the perigynia. Woods and 

 meadows, Vt. to Out., and southw. June, July. FIG. 498. 



Var. Haleana (Olney) Porter. Lower and more slender; pis- 

 tillate spikes more slender, 3-5 mm. thick; perigynia oblong. (C. 



Shriven Britton.) Me. to Sask., s. to Va., 



O., Mich., and Wise. FIG. 499. 



136. C. Crawei Dewey. Low, strict, stoloniferous, 

 0.5-4 dm. high ; leaves 2-4 mm. wide ; bracts scarcely 

 exceeding the culm ; spikes 2-5, scattered, the lowest radi- 

 cal or nearly so, short-peduncled or the upper sessile, 

 erect, compact, 1-2.7 cm. long; staminate 



spike generally peduncled ; perigynia ovoid, 

 usually resinous-dotted, nearly nerveless 

 or few-nerved, very short-pointed, longer 

 than the obtuse or short-pointed scale. 

 Moist places, in calcareous districts, Cape 

 Breton I. to Man., locally s. to n. Me., 

 n. Pa., the Great Lake region, and Kan. 

 June, July. FIG. 500. 



137. C. EXTENSA Good. Slender but 

 strict, 3-8 dm. high ; leaves involute ; spikes 

 2-4, the lowest remote and short-peduncled, 

 the remainder approximate and sessile, 

 short (0.8-2.5 cm. long) and compact; 

 perigynia ovoid, narrowed at the base, very 

 strongly nerved, ascending, the short stout 



beak sharply toothed, longer than the blunt brown-edged scale. 



Sandy shores, Long Island and Coney Island, N. Y. ; Norfolk, 601. C. exteusa. 



Va. June-Aug. (Nat. from Eu.) FIG. 501. 



138. C. flava L. Tufted, 2-8 dm. high, 

 yellowish throughout; leaves flat, 2-5 mm. 

 wide, mostly shorter than the culms, bracts 

 promine'nt, divergent; pistillate spikes 2-6, 

 aggregated, or the lowest distinct, subgl obese 

 or short-cylindric, 0.8-1.5 cm. 

 long ; perigynia ovoid, yellow- 

 brown, produced into a long 

 deflexed beak, strongly nerved, 

 twice or thrice longer than the 

 blunt brown scale. Damp 

 places, Nfd. to Sask. and Alb., 

 s. to Ct., n. N. J., w. Pa., 

 Mich., Minn., and Mont. 

 (Eu.) FIG. 502. Hybridizes with C. OederL 



Var. rectir6stra Gauclin. Low and slender ; leaves 

 1-3 mm. wide ; the smaller straightish perigynia 

 greenish or greenish-yellow. (Var. graminis Bailey.) 

 Nfd. to R. I. and Mich. (Eu.) FIG. 503. 



Var. elatior Schlecht. Pistillate spikes remote, 

 6-9 mm. thick, the curved perigynia spreading or 

 usually very retrorse. (C. lepidocarpa Tausch.) 

 Gaspe" Co. , Que. , to R. I. and N. Y. ( Eu. ) FIG. 504. 

 139. C. Oederi Retz. Similar, plant greenish, 

 0.5-3 dm. high; leaves 1-3 mm. wide; pistillate 504 c flava> 

 spikes 2-4, mostly scattered, 5-15 mm. long, 4-8 mm. v ' e i a ti r. 

 thick ; the plump greenish-brown short-beaked peri- 

 gynia ascending or wide-spreading, % longer than the obtuse scale. 

 Bogs, meadows and shores, Nfd. to Hudson Bay and Me. June- 

 505. o. Oederi. Aug. (Eu.) FIG. 505. Hybridizes with C. flava. 



502. C. tiava. 



June-Sept. 



