CYPERACEAE (SEDGE FAMILY) 



247 



618. 0. debilis. 



apart. — Wet rocks and mossy woods, in calcareous regions, Nfd. to Alaska 

 south w. to s. N. B., Me., N. Y., Mich., Col., etc. June, July. ' ' 



145. C. arctata Boott. Slender, erect, 2.5-10 dm. high ; radical leaves muck 

 shorter than the culm and very broad, flat ; bracts broad and 

 short, long-sheathing ; spikes 3-5, usually spreading or droop- 

 ing on filiform stalks, 1.5-8 cm. long, slender; perigynia 

 3.5-4.5 mm. long, abruptly and conspicuously stipitate and 

 abruptly contracted into a beak, S-cornered, j)rominently 

 few-nerved, green, mostly spreading, slightly 

 longer than the very sharp or cuspidate scale. 

 (Including var. Faxoni Bailey, which was 

 based on pathological material. ) — Woods 

 and copses, e. Que. to Ont., s. to Pa., Mich., 

 and Minn. June-Aug. Fig. 512. — Hybrid- 

 izes with C. castanea and C. virescens. 



146. C. debilis Michx. Eesembling the 

 last; very slender and lax, 0.3-1.2 m. high; 

 leaves narrow and lax ; spikes 3 or 4, the 

 upper approximate, the lower remote, mostly 

 overtopped by the leafy bracts, slender-pedi- 

 celed and flexuous, 3-6 cm. long ; perigynia ►.<, 

 soft and thin, 6-9 mm. long, faititly nerved arctata. 



or nerveless, the white-edged scales blunt. — Woods and copsea 

 D. C. to Fla. and Tex. May, June. Pig. 513. 

 Var. Riidgei Bailey. Culms 0.1-1 m. high ; spikes 1.5-6 cm. long ; perigynia 

 4.5-6 mm. long, rusty when ripe, appressed, twice longer than the tawny scales. 

 (C. tenuis Rudge.) — Open woods, thickets and meadows, Kfd. to 

 Wise, s. to N. C. June-Aug. Fig. 514. — Hybridizes with C. 

 virescens. Var. STRfcrioR Bailey. Usually tall, strict ' leaves 

 broader and firmer; spikes stiffer, simply spreading or even erect • 

 perigynia mostly shorter and greener, often little 

 exceeding the scales. — White Mts., N. H. 



Var. interjecta Bailey. Perigynia firmer, more 

 trigonous, scattered; the alternate-flowered spikes A-^ 

 cm. long. — Ct. to 0. and n. N. J., local. 



Var. pubera Gray. Perigynia usually more slen- 

 der, more nerved and minutely pubescent. — Pa. to 

 N. C, local. 



147. C. veniista Dewey, var. minor Boeckl. 

 Slender but strict, 3-8 dm. higb; basal leaves 4-12 mm. wide, 

 strict, the upper and the bracts about as long as the culm ; 

 spikes 2-5, the upper pistillate ones approxi- 

 mate, usually ascending, the terminal some- 

 times staminate at top, 1.5-5 cm. long; peri- 

 gynia ascending, 5.5-8 mm. long, firm, prominently nerved, 

 the very short and stout beak prominently toothed, thrice 

 longer than the rusty narrow scale. (C. oblita Steud.) — 

 Sphagnous swamps and low woods, N. Y. and N. J., southw., 

 local. June. Fig. 515. 



148. C. verruc5sa Muhl. Glaucous, stout and stiff, 0.6- 



1.5 m. high ; leaves long, rough-angled, becoming revolute ; 



spikes 3-10, 2-6 cm. long, 6-9 mm. thick, scattered to 



loosely aggregated, ascending or pendulous, often somewhat 



staminate above, variously peduncled ; scales thin, brown, 



emarginate, shorter than the ovoid glaucous perigynia, but 



the hispid awn from 2-3 times longer to nearly obsolete; 



616. C. verrucosa. t)eak short, entire. — Swamps and wet shores, Va., Mo., 



and southw. July-Sept. Fig. 516. 



149. C. macrokblea Steud.- Similar, slender, 4-7 dm. high ; spikes 2-5, 



1.6-4 cm. long, ascending, on slender peduncles ; scales lanceolate to ovate, 



614. C. deb., 

 V. Kudgei. 



515. C. ven. 

 T. minor. 



