246 



CYPERACEAE (SEDGE FAMILY) 



Plant 0.5-6 dm 

 (C viridula 



0. Oederi, 

 pumila. 



Var. pumila (Cosson & Germain) Fernald. 

 high ; pistillate spikes 3-10, mostly crowded. 

 Michx. ; C. flava^ var, viridula Bailey.; — Nfd. 

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

 Fig. 506. 



140. C. assiniboineusis 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 re:note, 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. longir6stris 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. ^lay- 

 July. Fig. 508. 



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

 high, the base castaneous ; leaves flat, the 

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

 vahitish ; piistillate 2-10, remote, often in 



507. C. assini- 

 boinensis. 



2's or 



3Vs, 



1.5-5 cm. 



long 



Slender 

 3-6 mm. 

 than the 

 7-2 mm. 



508. C. longirostris. 



509. C. cherokeensis. 



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. 

 but erect, 3-9 din. high ; leaves, 

 broad, flat, hairy, much shorter 

 rough culm ; staminate spike 

 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 i as long as the 



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

 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 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 nortliw. July, Aug. (Eu.) Fig. 511. 



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

 dm.); the sjjikes remote, the lowest 2.5-10 cm. 511. c. capillaris 



510. C. castanea. 



