CYPERACEAE (SEDGE FAMILY) 



243 



i88. C. lax., 

 V. latifolia. 



and aggregated about the inconspicuous staminate 



spike, the lowest usually long-exserted. (Var. stri- 



atula Carey.) — Vt. and e. Mass. to Ont., and south w. 



Fig. 487. 



Var. latifblia Boott. Rather low, 2-6 dm. high ; 



culms winged; leaves 1.5-4 cm. broad; staminate 



spike sessile or very nearly so, hidden by the pistil- 

 late; pistillate spikes cylindric and loose, 1.5-3 cm. 



long, the upper one or two contiguous ; bracts very 



broad. ( C. albursina Sheldon. ) — Deep rich woods, 



w. Que. and Vt. to Ont., and south w. Fig. 488. 



Var. leptonervia Fer- 

 nald. Slender, 1.5-7 dm. 

 high ; leaves 0.5-1 cm. 

 broad ; pistillate spikes 

 linear-cylindric, loosely 

 flowered, 1-2.5 cm. long, 

 the 2 or 3 upper crowded 

 at the base of the staminate, the lower 

 remote ; perigynia oblong-fusiform, 

 faintly nei^ed or nerveless. — Nfd. to 

 Ont., s. to n. N. E., N. Y., and Mich. ; 

 and in the mts. to N. C. Fig. 489. 



128. C. Hitchcockiana Dewey. 

 Erect, 3-7 dm. high; leaves 3-7 mm. broad; spikes 

 2-4, all more or less peduncled, very loosely few- 

 flowered, erect, 1-2.5 cm. long, the bracts elongate 

 and leafy ; perigynia triangular-ovoid, many-striate, 

 4-5 mm. long, the strong beak prominently oblique, 

 shorter than the scales. — Rich woods, Vt. to Ont., 

 s. to Ky. and Mo. May-July. Fig. 490. 

 129. C. oligocarpa Schkulir. Diffuse, 1-5 dm. high; leaves 



2-4.5 mm. wide; bracts elongate, spreading ; staminate spike sessile or stalked; 



pistillate spikes 2-4, scattered, stalked or the uppermost sessile, loosely 2-8- 

 flowered, erect, 0.5-1.5 cm. long; perigynia 3.5-4 mm. long, 



n hard, finely impressed-nerved, abruptly contracted into a con- 



\ mS\ spicuous mostly oblique beak, the orifice entire; scales very 

 j /;''/>;, 1 loosely spreading, longer than the perigynia. — Dry woods and 

 '\^ ;t 1 copses, Vt. to Ont., la., and south w. May-July. Fig. 491. 



130. C. katahdinensis Fernald. Densely 

 caespitose ; leaves 1-2.5 dm. long, 3-4 mm. 

 broad, with the similar bracts much (2-6 

 times) overtopping the low (1-6 cm. high) 

 rough-angled culms; pistillate spikes S ov 4, 

 approximate, or the lowest remote, short- 

 pediceled, 8-14 mm. long, d-lO-floivered ; 

 staminate spike 6-8 mm. long, generally 

 hidden among the pistillate ; perigynia ellip- 

 soid, 3^ mm. long, many-nerved, beakless, 

 mostly exceeding the whitish green-awned 

 scales. — Gravelly shore of a pond, Mt. 

 Katahdin, Me. ; rocky bank, Lake St. John, 



oligocarpa. Que. (Brainerd). July, Aug. Fig. 492, 492. C. katahdinensis. 



131. C. conoidea Schkuhr. Slender but 

 high; staminate spike long-peduncled or rarely nearly sessile ; 



2-3, scattered, short-stalked or the upper one sessile (the 

 lowest frequently very long-stalked), narrowly ellipsoid, 0.7-2.5 cm. long, rather 

 closely flowered, erect ; perigynia oblong-conical, 3-4 mm. long, impressed- 

 nerved, gradually narrowed to a point, the orifice entire ; scales loosely spread- 

 ing and rough-awned, equaling or exceeding the perigynia. — Moist grassy 



490. C. Hitch- 

 cockiana. 



Strict, 1.5-7 dm. 

 pistillate 



