CYPERACEAE (SEDGE FAMILY) 



247 



512. C. arctata. 



513. C. 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 much 

 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, 3-cornered, prominently 

 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. Resembling 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, faintly nerved 

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

 IX C. to Fla. and Tex. May, June. FIG. 513. 

 Var. Rudgei 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. tennis Rudge.) Open woods, thickets and meadows, Nfd. to 

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

 virescens. Var. STRICTIOR Bailey. Usually tall, strict; leaves 

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

 perlgynia mostly shorter and greener, t often little 

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



Var. interjecta Bailey. Perigynia firmer, more 

 trigonous, scattered; the alternate-flowered spikes 4-8 

 cm. long. Ct. to O. and n. N. J., local. 



Var. pubera Gray. Perigynia usually more slen- 

 der, more nerved and minutely pubescent. Pa. to 



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

 Slender but strict, 3-8 dm. high ; 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 stain in ate 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. verruc6sa 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; 

 beak 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, 

 1.5-4 cm. long, ascending, on slender peduncles ; scales lanceolate to ovate, 



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516. C. verrucosa. 



