OP ARTS AND SCIENCES. 97 



much shorter : peduncles one to one and a half inches long, triquetrous, 

 scabrous : staminate scales oblong, shortly mucronate, carinate, nerves 

 fuscous, the margins pale : pistillate scales Janceolate and squarrose, 

 reddish, furnished with a rough-ciliate mucro : perigynium about equal 

 to the scale, ovate-elliptic, oblique, the beak recurved, slightly trigo- 

 nous, nerved, smooth, straw-colored, beak slightly bifid : achenium 

 obovate, trigonous and obtuse, black, sides convex and very slightly 

 punctulate." — Between Huitamalco and Tiuzultan in Puebla, South 

 Mexico, at 5,000 feet, May 1, Liebmann. 

 108. Carex viridis, Schlecht. & Cham, in Linnsea, xi. 30. 



Culm strict but slender, about two feet high : leaves crowded, rigid, 

 rough : peduncle exserted, branched outside the sheath or sometimes 

 simple: spikes lax, usually nodding, loosely dowered, often dark- 

 colored, very much longer than the, short bracts: perigynium one and 

 a half to one and three fourths lines long, oblong-lanceolate, trigonous, 

 with dorsal angle obtuse and the lateral ones acute, the faces some- 

 what convex, lightly many-nerved, green or variegated with dull 

 purple, smooth, straight or slightly curved above, produced into a 

 lightly toothed beak a half-line long, exceeding the scale : scale ovate- 

 lanceolate, obtuse or nearly so, hyaline on the margins. — South 

 Mexico, Schiede ; Volcan de Barba, Costa Rica, Hoffmann. 

 lOS. Carex tuberculata, Liebmann, 1. c. 



" Stoloniferous, the stolons emitting many yellow roots : culms two 

 to three feet high, trigonous, rough on the angles above : leaves equal- 

 ling the culm, three to four lines wide, revolute, nerved, bright green, 

 rigid and carinate, rough on the margins, the sheaths thin-membrana- 

 ceous, bright ferruginous, the orifice oblique : spikes numerous, ex- 

 sertly peduncled, three in an axil, two to three inches long, cylindrical 

 and flexuose, very densely flowered : peduncles triquetrous, scabrous, 

 two inches long or shorter above, bearing one or two or three spikes 

 one or other of which is very short, lateral, and sessile : bracts usually 

 exceeding the culm, serrulate on the margins and keel, base araplec- 

 tant, the orifice roundish-cut, the upper ones shorter and setaceous : 

 staminate scales oblong, mucronulate, 3-nerved, fuscous, sides some- 

 what hyaline : pistillate scales twice smaller, ovate-lanceolate, shortly 

 mucronulate, yellow, 3-nerved. margins pale yellowish-red : perigy- 

 nium equalling the scale, turgid, obovate, round-trigonous, short-beaked, 

 angles conspicuous, the side dull ferruginous and tuberculate, beak 

 paler and bifid: achenium ovate, trigonous, violet-chestnut-colored, 

 slightly granulate." — Chinantla in Puebla, South Mexico, at 7,000 

 feet. May 1, Liebmann. 



VOL. XXII. (n. s. xiv.) 7 



