CYPERACEAE (SEDGE FAMILY) 



219 



351. C. albolutescen 



the culms, sheaths loose ; inflorescence usually dense, cylin- 

 dric to ellipsoid ; spikes 6-15, globose, closely flowered, 

 greenish or dull brown, 0.5-1 cm. long ; perigynia 3-4 mm. 



long, their tips rosulate-spread- 



ing. (G. tribuloides,\iii\ Bailey; 



C.cristatella Britton.) — Swales 



and wet woods, e. INIass. and Vt. 



to Pa., Mo., Sask., and B. C. 



June-Aug. Fig. 350. 



9. C. albolutescens Schwein. 



Culms stout and stijf, 2-8 dm. 



high ; leaves erect, long-pointed, 



pale green, 2-5 mm. wide, shorter 



than the culms ; inflorescence ^''^- ^' "'^^^^ 



stiff, linear-cylindric to subglobose, with or without 



elongated bracts ; spikes 3-30 (sometimes compound), 



conic-ovoid to subglobose, 0.6-1 cm. long; perigynia 2-3 mm. broad, rhombic. 



ovate to suborbicular, pale, with short 



deltoid firm greenish tips. (C. strarninea, 



vars. foenea Torr. and cnmulata Bailey.) 



— Damp or even dry soil, chiefly on the 

 coastal plain, N. B. to Fla. and Mex., ^^^ M\ 

 rarely inland ; also L. Huron to Man. 

 July-Sept. Fig. 351. 



10. C. mirabilis Dewey. Culms 0.3- 

 1.5 m. high, very loose and smooth; leaves 

 soft and thin, 2.5-6 mm. wide, the sheaths 35.3, c. mirabilis. 

 rather loose ; sjnkes 4-12, greenish, sub- 

 globose or ovoid, 5-9 mm. long, mostly approximate; peri- 

 gynia lance-ovate, 3-4 mm. long, with divergent tips. (0. 

 strarninea, var. Tuckerm.) — Dry banks, open woods, and rich 

 copses, Me. to Man., N. C. and Mo. June, 

 July. Fig. 352. Var. perloxga Fernald. 

 Spikes remote. — Less common. Fig. 353. 



Var. tincta Fernald. Spikes 3-7, ovoid, 

 approximate, brown-tinged; scales brown 

 with a pale margin. — N. B. and n. N. E, 



— Plant comparatively small. 



11. C. strarninea Willd. Culms very 

 slender, 3-7 dm. high, smooth except at summit ; leaves o^ q strarninea. 

 0.5-2 mm. wide; spikes 3-8, yellow-brown, or rarely green 



ovoid or subglobose, 4-8 mm. long, usually forming a moniliform or linear- 

 cylindric flexuous inflorescence ; perigynia 

 rarely 4 mm. long, lance-ovate, the inner 

 faces 3-5-nerved or nerveless, the ascend- 

 ing tips inconspicuous. (G. tenera 

 Dewey.) — Meadows, dry banks, or open 

 woods, N. B. to B. C, Ky., and Ark. 

 June-Aug. Fig. 354. 



Var. echinbdes Fernald. Tips of the 

 slightly longer perigynia divergent and 

 conspicuous. — Vt. (Brainerd); Out. and 

 Mich, to la. Fig. 355. 



12. C. hormathbdes Fernald. Culms 

 355. C. str., V. echin. g^e^der and flexuous, sharply angled, 

 smooth except at summit, 3-9 dm. high ; leaves shorter than 

 or rarely exceeding the culms, very ascending, 1-2.5 mm. 

 wide ; inflorescence slender, moniliform (or on late culms 

 congested), of 3-9 broadly ovoid broivni^h spikes (8-12 mm. 

 lonal, with or without subtending elongated bracts ; perigynia 856. C. hormathodes. 



353. C. mir., v. perl. 



