FERNALD. — CARICES OF SECTION HYPARRHENAE. 471 



plains, Aug. 1, 1872 (J. Macoun) : British Columbia, Nelson, Koote- 

 nay Lake, July 3, 1890 (/. Macoun, Herb. Geol. Surv. Can., no. 30, 

 393) : Maine, St. Francis, Aug. 9, 1893, Sherman, Aug. 23, 1897 

 (M. L. Fernald) : New Hampshire, Randolph, Aug. 2, 1897 (E. F. 

 Williams); Mt. Washington, July 28, 18G1 (Wm. Boott); Mt. Pleas- 

 ant House, July 31, 1897 ( W. Deane) : Vermont, Burlington, July 

 13, 1896 (JB. Brainerd): Michigan, Keweenaw Co., Aug., 1890 {0. 

 A. Fa?- well). 



b. Tips of perigynia mostly equalled by the ovate blunt or acutish scales : plant 



tall, forming loose stools. 



6. C. oronensis. — Figs. 15, 16. — Culms tall and erect, 0.5 to 1 m. 

 high, sharply angled and harsh above: leaves smooth, 2.5 to 4 mm. 

 broad, much shorter than the culms : spike oblong-cylindric, erect, of 3 to 

 9 ascending dark brown rhomboid-ovoid pointed spikelets 0.5 to 1 cm. 

 long: scales mostly glossy brown, with pale scarious margins: perigynia 

 appressed, about Jf. mm. long, 1.3 mm. broad, very narrowly winged above. 



— Dry fields, thickets, open woods, and gravelly banks. Maine, Orono, 

 about 1870 (F. Lamson-Scribner), June 28, 1890, June 30, 1891, July 

 3, 1897 (M. L. Fernald). • 



= = Perigynia 1.5 to to 2 mm. broad, ovate-lanceolate, 4.5 to 6.5 

 (average 5) mm. long. 



7. C. praticola, Rydberg. — Figs. 17, 18. — Culms smooth and 

 slender, 3 to 6 dm. high, overtopping the smoothish flat (2 to 3.5 mm. 

 broad) leaves ; spike slender, flexuous, moniliform, the 3 to 7 silvery 

 brown mostly remote pointed spikelets few-jiowered, 7 to 1.7 mm. long, 

 mostly long-clavate at base ; perigynia nerveless or minutely short-nerved 

 on the inner face, equalling the ovate-lanceolate acutish or blunt scales. 



— Mem. N. Y. Bot. Card. i. 84; Bvitton, Man. 226. G. pratensis, 

 Drejer, Rev. Crit. Car. Bor. 24; Fl. Dan. xiv. 8, t. 2368; Bailey, 

 Proc. Am. Acad. xxii. 147 ; Britton, in Britt. & Brown, 1. c. 354, fig. 

 858; not Hose. C. adusta, var. minor, Boott in Hook. Fl. Bor. -Am. ii. 

 215, & 111. iii. 119, t. 383. C. Liddoni, in part, of authors, not Boott. 



— Open woods, clearings, and prairies, Labrador to Saskatchewan 

 and British Columbia, south to Nova Scotia, Aroostook County, 

 Maine, Lake Superior, and North Dakota ; also in Greenland. 

 June-Aug. 



