CYPERACEAE (SEDGE FAMILY) 



247 



ing 

 3.5-4. 



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, 



U5. 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- 

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

 'i mm. long, abruptly and conspicuously stipitate and 

 abruptly contracted into a beak, S-cornered, pi'ominently 

 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 Miclix. Kesembling 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, 



D. 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. tenuis 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; 



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 4-8 

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



Var. pubera Gray. Perigynia u.sually more slen- 

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

 K C, local. 



147. C. venusta Dewey, var. m.inor 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 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; 

 beak short, entire. — Swamps and wet shores, Va., Mo., 

 and southw. July-Sept. Fk;. 516. 

 149. C. macrok51ea Steud. Similar, slender, 4-7 dm. high ; spikes 2-5, 



614. C. deb 

 V. Rudgei. 



515. C. ven. 

 V. minor. 



516. C. verrucosa. 



1.5-4 cm. 



long. 



ascending, on slender peduncles ; scales lanceolate to ovate, 



