246 



CYPKRACEAE (SEIHJK FAMILY) 



506. C. Oederi, 

 v. puinila. 



50T. C. assiiii- 

 boinensis. 



Var. pumila (Cosson & Germain) Fernald. Plant 0.5-6 dm. 

 high; pistillate spikes 3-10, mostly crowded. (C. viridula 

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

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

 FIG. 506. 



140. C. assiniboinSnsis 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. cheroke6nsis 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'sor 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 



tri9 ' 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 br<>"-n 

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

 in calcareous districts, Nfd. to Ont., 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 lowst r<u-i />/ 

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

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

 flowered} ; pt'riijijniiun thin, very small, oblong- 

 obovoid, the beak hyaline-lipped, longer than the 

 n ></ obtuse white scale. Alpine or subalpine 

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

 and high north w. July, Aug. (Eu.) FIG. 511. 



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

 ////.),' the spikes remote, the lowest 2.5-10 cm. 511. C. capillaris. 



509. C. cherokecnsis. 



610. C. castam-a. 



