246 



CYPERACEAE (SEDGE FAMILY) 



Plant 0.5-6 dm 

 ( C. viridula 



506. C. Oederi, 

 v. pumila. 



507. C. assini- 

 boinensis. 



Var. pumila (Cosson & Germain) Fernald. 

 high ; pistillate spikes 3-10, mostly crowded. 

 Michx. ; C. flam, var. viridula Bailey.) Nfd. 

 to B. C., s. to N. E., Pa., 0., Ind., etc. (Eu.) 

 FIG. 506. 



140. C. assiniboin6iisis W. Boott. Tufted, 

 slender, 4.5-9 dm. high, purplish-brown at base; 

 leaves 2-3 mm. wide, the bracts short, rarely 

 prolonged ; staminate spike long-stalked, 2-3 cm. 

 long; pistillate spikes 2, very remote, peduncled, 

 with 3-6 remote alternate flowers; perigynia 

 5-6.5 mm. long, lance-subulate, about equaling 

 the scales. Damp thickets and gravelly shores, 

 Man. and n. Minn. June. FIG. 507. 



141. C. Iongir6stris Torr. Slender but erect, 0.3-1 m. high, 

 growing in stools, the base dull brown and re- 

 taining coarse shreddy tufts; leaves 3-4 mm. 

 wide, flat, loose ; staminate spikes 1-4, pe- 

 duncled ; pistillate spikes 2-5, 1-5 cm. long, 

 loosely flowered, slender-peduncled and mostly drooping ; 

 perigynia thin, slightly inflated, green, spreading, about the 

 length of the awned scales. Rocky woods or dry alluvial 

 thickets, N. B. to Sask., N. J., Pa., and Neb., local. May- 

 July. FIG. 508. 



142. C. cherokeSnsis Schwein. Rather slender, 2-7 dm. 

 high, the base castaneous ; leaves flat, the 



basal 3-6 mm. broad ; staminate spikes 2-4, 

 whitish; pistillate 2-10, remote, often in 

 2's or 3's, 1.5-5 cm. long ; perigynia conic- 

 ovoid, pale green or straw-color, promi- 

 nently few-ribbed, slightly exceeding the 

 broad pale scales. Woods and river 

 swamps, Ga. and Fla. to Tex. ; north w. 

 in the flat country to Mo. April, May. 

 FIG. 509. 



143. C. castanea Wahlenb. Slender 

 but erect, 3-9 dm. high ; leaves, 3-6 mm. 

 broad, flat, hairy, much shorter than the 

 rough culm ; staminate spike 0.7-2 mm. 

 long, very short-peduncled ; pistillate spikes 

 2-5, approximate, widely spreading or 



drooping on filiform stalks, 0.8-2.5 cm. long, rather dense, 

 tawny ; perigynia narrowly conic, the beak \ as long as the 



body, thin, with a nerve on each side, longer than the brown 

 acute thin scales. Alluvial woods and thickets, rarely in bogs, 

 in calcareous districts, Nfd. to Out., locally s. to Ct., N.Y., and 

 the Great Lake region. May-July. FIG. 510. Hybridizes with 

 C. arctata. 



144. C. capillaris L. Densely tufted, very slender but erect, 

 0.3-2.5 dm. high; culm smooth, longer than the narrow flat or at 

 length involute leaves ; spikes 2-4, approximate, the lowest rarely 

 2 cm. apart, all more or less long-peduncled and drooping, borne 

 in the axils of sheathing bracts, very small (3-12- 

 flowered} ; perigynium thin, very small, oblong- 

 obovoid, the beak hyaline-lipped, longer than the 

 very obtuse white scale. Alpine or subalpine 

 regions, Mt. Kineo, Me. ; Mt. Washington, N. H. ; 

 and high northw. July, Aug. (Eu.) FIG. 511. 



Var. elongata Olney. Loose and tall (1.5-8 

 610. C. castanea. dm.); the spikes remote, the lowest 2.5-10 cm. 511. C. capillaris. 



508. C. longirostris. 



509. C. cher okeen sis. 



