224 



CYPERACEAE (SEDGE FAMILY) 



3si3. C arcta. 



384. C. canescens. 



885. C. canesc. 

 V. subloliacea. 



flowered green spikes (SJ^-1 mm. long), the terminal usually with a long-clavate 



base, the lower often subtended by a setiforni bract ; porujiinia elliptic-ovate, 



with a narrow suhstipitate base, wide-spreading or recurved, much exceeding 



the acutish scales. — Wet woods and swamps, e. Mass. to centr. 



N. Y. and Del. May, June. Fig. 382. 



31. C. arcta Boott. Pale green or somewhat glaucous ; culms 

 very soft, in loose stools, 1.5-0 dm. high, often overtopped by the 

 soft flat leaves (2.5-4 mm. broad) ; inflorescence of 

 0-13 ovoid or subcylindric spikelets (0-11 mm. 

 lung) ; perigyiiia cordate-ovate, with a rather definite 

 beak, strongly nerved on the outer, faintly on the 

 inner face, 2-3 mm. long, 1.2-1.5 mm. broad, some- 

 what exceeding the acute often brown-tinged scales. 

 (C. canescens, var. polystachya Boott.) — Wet woods, alluvial 

 thickets, etc., Me. and Que. to B. C, s. to Mass., N. Y., Mich., 

 and Minn. Juiie-Aug. Fio. 383. 



32. C. canescens L. Culms soft, in loose stools, 1.5-6 dm. 

 high ; leaves soft and flat, shorter than or exceeding the culms ; 

 inflorescence 2.5-5 cm. long, of 4-7 short-cylindric 

 to narrowly obovoid appressed-asc ending approxi- 

 mate or slightly remote spikes ; perigynia ovoid- 

 oblong, usually serrulate toward the short-pointed tip, 1.3-1.7 mm. 

 broad, more or less nerved on both faces, somewhat exceeding 

 the ovate pointed scale. — Wet places, Lab. to B. C, 

 locally s. toCt., and Mich, May-Aug. (Eurasia.) 

 Fig. 384. 



Var. subloliacea Laestad. Smaller ; the spikes 

 short-oblong or subglobose ; perigynia smaller, barely 

 2 mm. long, smooth throughout. — Similar range. 

 (Eu.) Fig. 385. 

 Var. disjiincta Fernald. Tall and lax, 3-8 dm. high ; inflo- 

 rescence elongated, flexuous, 0.5-1.5 dm. long; spikes 5-8, ellip- 

 soid to cylindric, all but the terminal remote ; 

 perigynia as in the species. — Nfd. to Wise, O., 

 and Pa., common. Fig. 386. 



33. C. brunnescens Poir. Vei'y slender and 

 lax; culms 1.5-7 dm. high; leaves soft, flat; 

 inflorescence 1-0 cm. long, of 3-6 more or less 

 remote or approximate siibglobose or ellipsoid 

 spikes (3-7 mm. long)-, perigynia 2-2.7 mm. 

 long, 1-1.5 mm. broad, serrulate at the base 

 of the distinct beak, loosely spreading ichen 

 mature. (C. canescens, vars. alpicola Wah- 

 lenb. and vulgaris Bailey.) — Open woods and 3S6. c. canesc, 

 dry rocky banks, Nfd. to B.C., s. to N. C, Mich., Wise, etc. v. disjuncta. 

 June-Aug. (Eu.) Fig. 387. 



34. C. bromoides Schkuhr. Very .^lender and 

 lax, green, scarcely glaucous ; the culms 3-8 dm. 

 long, mostly exceeding the soft flat leaves ; 

 inflorescence l()0sely subcylindric, 2-5.5 cm. 

 long, of 2-0 approximate or slightly scattered 

 spikes (0.5-2, cm. long) ; beak of the perigynium 

 ^^ as long as the strongly nerved body, slightly 

 exceeding the oblong pointed scale. — Rich low 

 woods and swamps, N. S. to ^)nt., and southw. 

 May-July. Fi<;. 3S8. 



35. C. Deweyana Schwein. Very lax, glau- 

 cous ; the cuhns 2-12 dm. long, much exceeding 

 the soft flat leaves ; inflorescence flexuous, 2-6 

 888. C. bromoides. cm. long; the 2-7 spikes, ^12-flowered (5-12 389. C. Deweyana 



887. C. brunnescens. 



