CYPEEACEAE (SEDGE FAMILY) 



219 



860. 0. cristata. 



852. C. miraWlis. 



the culms, sheatJis Inosp. ; inflorescence usually dense, cylin- 

 dric to ellipsoid ; spikes 0-15, globose, closely flowered, 

 greenish or dull brown, 0.5-1 cm. long ; perigy nia S-i mm 

 long, their tips rosulate-spread- 

 ing. ( 0. tribuloides, var. Bailey , 

 C.cristatella Britton.) — Swales 

 and wet woods, e. Mass. and Vt 

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

 June-Aug. Fig. 350. 



9. C. albolut6scens Sohwein. 

 Culms stout and stiff, 2-8 dm 

 high ; leaves erect, long-pointed, 

 jjP IY pale green, 2-5 mm. wide, shorter 



than the culms ; inflorescence 

 851 C slbolutesceDB ^'''^' 'iiear-oylindric to subgloboae, with or without 



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

 conlc-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. straminea, 

 vars. foenea Torr. and cumulata Bailey.) 



— Damp or even dry soil, chiefly on the 

 coastal plain, N. B. to Fla. and Mex.. 

 rarely inland ; also L. Huron to Man. 

 July-Sept. Fig. 351. 



10. C. mir4bilis Dewey. Culms 0.3- 

 1.5 m. high, very loose and smooth; leaves 

 soft and thtu, 2.5-6 mm. wide, the sheaths 

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

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

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

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

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

 July. Fig. 352. Var. peel6nga 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. straminea Willd. Culms very 

 high, smooth except at summit ; leaves ^^ (, straminea. 



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. (C. tenera 

 Dewey.) — Meadows, dry banks, or open 

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

 June-Aug. Fig. 354. 



Var. echinddes Fernald. Tips of the 

 slightly longer perigynia divergent and 

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

 Mich, to la. Fig. 355. 



12. C. hormathbdes Fernald. Culms 

 865. 0. str., V. echin. gjgnder and flexuous, sharply angled, 

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

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

 wide ; inflorescence slender, moniliform (or on late culms 

 congested), of 3-!i broadly ovoid brownish spikes (8-12 mm.. 

 lomi}, with or without subtending elongated bracts -fperigynia 856. c. hormathodes. 



858. C. mir., v. perl. 



slender, 3-7 dm. 



