CYPERACEAE (SEDGE FAMILY) 



237 



staminate spike clavate, 1-2 cm. long, sessile or short-stalked, usually reddish, 

 rarely paler ; perigynia puberulent, globose to obovoid, the short beak ^ to ^ as 

 long as the body; the scales usually red-tinged. Dry or sandy 

 soil, s. Me. to Alb., and southw. May, June. FIG. 453. 



Var. Iuc6rum (Willd.) Fernald. Perigynia puberulent to gla- 

 brate, the conspicuous slender beak about as long as the body. 

 Richer, usually damper soil, Me. to Mich., and the nits, of N. C. 

 May-July. FIG. 454. ^"lucorum" 



101. C. pubSscens Muhl. Lax, 2-8 dm. high, pubescent through- 

 out; leaves flat (0.5-1 cm. wide) and soft, shorter than the 

 culm ; spikes 2-4, the upper approximate, the lower 1 or 2 

 short-peduncled, short-cylindric, 0.7-2.3 cm. long, loosely flow- 

 ered, erect ; perigynia very hairy, sharply ^-angled, conspicu- 

 ously beaked and minutely toothed, straight, about the length 

 of the truncate and rough-cuspidate thin scales. Copses and 

 moist meadows, N. E. to Ky., and westw., local. May, June. 

 FIG. 455. 



102. C. CARYOPHYLLI5A Lat. Slightly stoloniferous, stiff; 

 the culm sometimes curved, 0.3-3 dm. high ; leaves flat, shorter 

 than the culm ; staminate spike prominently 

 clavate, mostly sessile ; pistillate spikes 2-3, all 

 " contiguous, sessile or the lowest very short- 

 peduncled and subtended by a bract scarcely as long as itself, 

 all ellipsoid or short-cylindric, the lowest 0.7-1.6 cm. long; peri- 

 gynia trigonous-obovoid, the very short beak 

 entire or erose, thinly hispid-hirsute. (C. prae- 

 cox Jacq.) Fields, Me. to D. C., local. May, 

 June. (Nat. from Eu.) FIG 466. 456. C. caryoph. 



103. C. GLAUCA Scop. Very stoloniferous 



and glaucous; the culms stiff, 1-6 dm. high; leaves shorter, 

 firm, with revolute scabrous margins, 3-6 

 mm. broad ; staminate spikes 2 (rarely 1), 

 clavate, the terminal 2-5.5 cm. long, pe- 

 duncled ; pistillate 1-3, cylindric, 1.5-3.5 

 cm. long, 4-6 mm. thick, remote, mostly 

 peduncled, erect ; the subglobose or ellip- 

 soid puncticulate perigynia slightly ex- 

 ceeding the oblong blunt or mucronate 

 purplish scales. Dry open soil, local, 

 N. S., Que., and Ont. June, July. (Nat. 

 from Eu.) FIG. 457. 



104. C. livida (Wahlenb.) Willd. Very 

 glaucous and stoloniferous; culms 1.5-6 

 dm. high ; leaves narrow, often becoming 

 involute; pistillate spikes 1 or 2, sub- 

 approximate or remote, sessile or nearly so, 

 erect, or rarely basal and long-stalked, narrow, 

 0.7-2.5 cm. long, 3-6 mm. thick; perigynia 



457 C glauca. ovoid-oblong, nerved, granular, beakless, the 

 point straight or nearly so, orifice entire ; scale 

 obtuse, brown- or purple-margined, mostly a little shorter than 

 the perigynia. Bogs, chiefly in calcareous regions, Lab. and 

 Nfd. to Alaska, locally s. to Ct., N. J., Mich., Minn., etc. May- 

 July. (Eu.) FIG. 458. 



105. C. panicea L. Strict, often stiff, glaucous-blue, 1.6-6 

 dm. high ; culm smooth; bracts broad and short, 1-6 cm. high ; 

 pistillate spikes 1-3, scattered, colored, mostly peduncled, erect, 

 rather compact or loose below, 1-3 cm. long, 5-7 mm. thick ; 

 perigynia ovoid, yellow or purple, somewhat turgid, scarcely 

 nerved, the point usually curved, mostly longer than the purple- 459. C. panicea. 



458. C. livida. 



