ORDER 154. CYPERACE^J. 375 



T8 C. alpiiia Swtz. Spk. 3 or 4, small, oral, close; bract longer than the culm; 

 perig. round-obovate, longer than the black glume. Leaves radical. L. Superior. 



79 C. atrata L. Spk. 36, oblong-ovate, nodding, the lower stalked; perig. 

 round-ovate, shorter than the dark oval glume. Bract long. White Mountains. 



80 C. graciHima Schw. Spk. 34, slender, 12 20", rather loose, drooping on long 

 filiform remote stalks; bract short; perig. oblong, longer than the oblong short- 

 awned glume. 2f. Meadows. 



81 C. formosa Dew. Spk. 3 4, oblong, 8 12", on long, distant recurved pedun- 

 cles; perig. oblong, inflated, twice longer than the ovate acute glume. Culm 2 3f, 

 bract shorter than the culm. Wet meadows. 



82 . glabra Boott. ? Spk. short-cylindric (10, spreading on capillary peduncles; 

 perig. elliptic-oblong, acute at both ends, nerved, twice longer (2") than the ovate 

 brown-edged glume. Very slender, erect, 18'. N. J., N. Y., Penn. 



83 C. Davisii Torr. Spk. 4, .10 15" long, rather loose, long-stalked, drooping when 

 ripe ; bracts much longer ; perig. oblong-ovate, nerved, acute, scarce equaling the 

 awned glume. Mass, to Wis., and S. 



84 C. praecox Jacq. $ Spk. clavate, erect; $ spk. about 2, ovate-oblong, 69"; 

 perig. 6 12, round-ovate, downy, nearly equal to the ovate colored glume (which is 

 brown, edged with white). Culm 3 6', leafy at base. Rocky hills, E. Mass. 



85 C. Ricliardsoiiii R. Br. & Spk. clavate-oblong, erect ; $ about 2, oblong, near, 

 subsessile ; glumes wholly brown ; perig. ovoid-triquetrous, obtuse, nearly beak- 

 less, shorter than the green-midveined glume. 4 10'. Woods, N. Y. to 111., and N. 



S6 C. vestita Wilkl. Spk. all sessile, 9", $ cylindric, ? 2, ovoid-oblong; perig. 

 ovate, short -beaked, hairy, exceeding the rusty acutish glume. Culm 1230', sharp- 

 angled, leafy below. Common in wet places. 



8T C. pubescens Muhl. Spk. oblong, 812", rather loose, the lowest on a short 

 stalk,- perig. lance-ovate, beaked, hairy, exceeding the carinate, mucronate glume. 

 Culm 10 2(y ; leaves downy, flat, 510'. Meadows. 



83 C. iiiji'ro-margiuata Schw. is probably a mere variety of No. 55, having the 

 glume? more extensively colored and the stigmas oftener 3. Hills, Pa., and S. 



89 . iimbellata Schk. Dwarf; spk. erect, 2 3", ? ovoid, 2 4, each on a sub- 

 radical peduncle, green ; perig. 58, round-ovate, beaked, nearly equaling the lance- 

 acuminate glume. Leaves 3 5', far longer than the spike. North. 



90 C. lmitiGiisii Dew. Spikes all sessile, green, $ 4 5", ? 2 3, ovoid ; perig. 

 about 5, globons, beaked, equal to the pointed glumes. Culm filiform, 6 12', with 

 very narrow leaves. Fields and hills : common. 



91 C. Peiiiisylvanlca Lam. Spikes tawny-red, S 1' long, pedunculate, the & 

 small, round, sessile, crowded, about 2; perig. round-ovoid, 5 7, downy, short- 

 beaked, equaling the acuminate glume. Culm 412', erect, leaves long. Copses. 



92 C. IVovse-Aiigliae Schw. Spk. purplish, sessile, $ 34", $ 2 4, small, near, 

 (except the lowest), with bracts exceeding the culm; perig. 37, pyriform, short 

 beaked, larger than the ovate glume. Slender. 41-2'. Open woods. 



93 r. varia Mnhl. Spikes rusty-green, sessile, oval. 13, separated, the $ slender, 

 (10") and stalked, bracts very short; perig. about 7, roui d-oval, abruptly beaked, 

 about equaling the pointed rusty-edged glume. Erect 8-18, leafy at base. Dry 

 woods. 



94 C. fljiva L. $ Spk. oval, approximate, 2 4; perig. crowded, ovate, ribbed, re- 

 flexed with a long curved beak, longer than the knee-ovate glume. Plant 10 JO', 

 yellowish green. Cold, wet. soils : common. 



95 C. CEderi Elirh. 9 Spk. 35, oblong, small (35"), close, nearly sessile; peri;;, 

 globous, diverging with a short abrupt beak ; plant yellowish, 8 16', leaves and 

 bracts erect. Shores, N. Eng.. and West. (C. viridula MX.) 



96 C. folliciilata L. 9 Spk. 24, capitate, dense, distant, the lower peduncle 

 exserted ; perigynia \" ', lanceolate, nerved, tapering into a long beak, diverging, 

 twice longer than the long-awnrd glumes ; leave* Ian'"*' linear. Wet. 



