OF ARTS AND SCIENCES. 131 



C. affeniiata, R. Br. Frankl. Narr. App. 763. 



O. Drummondiana, Dewey, Sill. Journ. xxix. 251. 



G. rupestris, var. Drummondiana, Bailey, Carex Cat. 

 High mountains of Colorado, Hall & Harbour 273, Sierra Blanca, 

 Hooker «& Gray, Gray's Peak, Patterson, and northward to Greenland, 

 Herb. Europe. 



Section XI. LEPTOCEPHAL^. Perigynium thin in texture, 

 green, oblong or lanceolate or linear in general outline, beakless or 

 nearly so ; spike one, staminate above, thin and slender ; stigmas 

 mostly three. — Small and slender grass-like North American species. 



218. Carex polytrichoides, Muhl. in Willd. litt. in Wahl. Kongl. 

 Acad. Handl. xxiv. 139; Willd. Sp. PI. iv. 213. 



C. leptalea, Wahl. 1. c. 



O. microstachya, Michx. FI. Bor.-Am. ii. 169. 

 Florida and Texas to Newfoundland and Oregon. 



219. Carex Ltoni, Boott, Hook. Fl. Bor.-Am. ii. 209, t. 208. 

 Culm very short (one to two inches) : leaves rigid, canaliculate, 



almost needle-like, their points callous and shining and truncate, sur- 

 passing the culm ; scales narrow, rather acute, about the length of 

 the lanceolate, smooth, slightly toothed perigynium. — Founded upon 

 very immature specimens collected by Drummond in the Rocky Mts. 

 of British America. 



220. Carex leiocarpa, C. A. Meyer, Cyp. Nov. 208, t. 5. 

 (7. anthoxanthea, Presl, Reliq. Htenk. 203, fide Boeckeler. 



Culm slender, erect, six to fifteen inches high : leaves flat but narrow, 

 lax, about as long as the culm : spike about an inch long, commonly 

 either wholly staminate or wholly pistillate : perigynium lance-linear 

 (about two lines long), pointed, nerved at least below, commonly 

 entirely smooth, ending in a blunt and perfectly entire orifice, usually 

 twice longer than the obtuse scale : stigmas three. Habitually taller 

 and laxer than the next. — Alaska, Ball, Mertens ; Nootka Sound, 

 Vancouver's Isl., Presl. 



221. Carex circinata, C. A. Meyer, 1. c. 209, t. 6. 



Culm slender, two to ten inches high, often curved : leaves filiform, 

 firm, equalling or surpassing the culm, usually curved : spike half an 

 inch to an inch long: perigynium nearly linear (nearly three lines 

 long), produced very gradually to a 2-lipped orifice, somewhat rough 

 on the margins, lightly nerved, exceeding the linear purple-margined 

 obtuse and white-tipped scale : stigmas three or two. — Alaska, Dall, 

 Bongard. 



