102 PROCEEDINGS OF THE AMERICAN ACADEMY 



rough, shorter than the culm : staminate scales oblong-lauceolate, 

 denticulate above, mid-nerve green, margins hyaline, reddish-|iunctate ; 

 pistillate scales usually shorter than the perigynium, lanceolate, acu- 

 minate, the beak and the margins slightly ciliate: perigynium ellipti- 

 cal, trigonous, the beak and nearly entire orifice ciliate, sides concave, 

 nerved, yellowish green : achenium obovate, triquetrous, apiculate, 

 yellowish, smooth, sides concave." — Puebla, South Mexico, at 7,000 

 feet, May 1, Liebmann. 



121. Carex chlorocarpa, Liebmann, 1. c. 77. 

 C. Liehmanni, Walpers, Ann. iii. 705. 



" Culm six to eight inches high, slender, triquetrous, rough on the 

 angles : leaves shorter than the culm, narrowly linear, carinate, 

 nerved, rough on margins and keel, sheaths scabrous, ferruginous 

 above, with the orifice truncate : spikes three or four, cylindrical, the 

 terminal androgynous with the base staminate, the remainder alter- 

 nate, shortly peduncled, appressed, approximate or the lowest often 

 remote, all furnished with leafy-setaceous scabrous bracts which are 

 shorter than the culm : staminate scales oblong, hyaline on the mar- 

 gins, the midnerve green ; pistillate scales similar to the staminate, 

 shorter than the perigynium : perigynium stipitate, elliptical, trigo- 

 nous, six-angled, green, glabrous, the beak bifid : achenium obovate, 

 trigonous, apiculate, glabrous, yellowish, a little concave on the sides, 

 a third shorter than the perigynium." — Parada, Sierra de Oaxaca, 

 South Mexico, at 8,000 to 8,500 feet, June 1, Liebmann. 



B. Sijlvaticce., Tuckerman, Enum. Metli. 12. Terminal spike all staminate ; 

 pistillate spikes mostly long-exserted ; perigynium few-nerved, contracted 

 into a cylindrical beak which is longer than the body. 



122. Carex longirostris, Torrey, Schwein. An. Tab. 

 C. Sprengelii, Dewey, Spreng. Syst. Veg. iii. 827. 



C. longirostris^ var. minor, Boott, Phila. Acad. Sc. 1863, 78. 

 C. longirostris^ var. microcystis, Boeckeler, Linnsea, xli. 241. 

 Variable in the size and shape of the spikes, which are sometimes 

 almostglobular and at others as slender as in G. debilis. — Shady banks 

 from New England to Pennsylvania, Garber, and to Michigan, Illinois, 

 Mead, and Nebraska, Bruhin (St. Helena) ; Rocky Mts. of Colorado, 

 Hall & Harbour 614; Rocky Mts. of British America, Drummond ; 

 Saskatchewan and Winnipeg, Bourgeau, and Grand Valley, Macoun.* 



* Carex Michelii, Host, var. ultra (C. bispicala, Hook. & Arn. Bot. Bee- 

 chey's Voy. 118, t. 28; C. longerostrata, C. A. Meyer. Cyp. Nov. t. 12; C. 

 Camtschatcensis, Kunth, Enum. PI. ii. 477) may be expected in Alaska. It 



