1 88 FLORA. 



Scleria reticularis pub<?scens Britton. Reticulations on the achene pubescent; 

 lateral clusters usually longer stalked. Conn, to Fla. and Cuba. 



Scleria reticularis obscura Britton. Reticulations very obscure, the top of the 

 achene almost smooth. R. I. to N. Car. 



4. Scleria Torreyana Walp. Torrey's Nut-rush. (I. F. f. 665.) Culms 

 weak, spreading or diffuse, 3-angled, nearly or quite smooth. 0.3-0.6 m. long. 

 Leaves linear, nearly flat, glabrous, 3-8 mm. wide, not exceeding the culm; spike- 

 lets in a loose terminal cluster, and 1-3 filiform-stalked axillary ones; bracts 

 glabrous; achene globose, somewhat pointed, nearly 2 mm. in diameter, irregularly 

 rugose with low ridges, the ridges usually pubescent, and connected by shorter 

 longitudinal ones; hypogynium 3-lobed, the lobes appressed to the base of the 

 achene. In moist soil, S. N. J. to Fla., Tex. and Mex. Also in Cuba. June-Aug. 



5. Scleria paucifidra Muhl. Papillose Nut-rush. (I. F. f. 666.) Root- 

 stocks hard, clustered ; culms slender, erect, usually tufted, 3-angled, 2-5 dm. tall. 

 Leaves narrowly linear, less than 2 mm. wide, the upper elongated and often 

 overtopping the culm, their sheaths often densely puberulent ; spikelets in a small 

 terminal cluster and sometimes also in I or 2 axillary ones ; achene oblong oi 

 globular, 1 mm. in diameter or rather more, crustaceous, papillose, the lowei 

 papillae elongated and reflexed; hypogynium a narrow obtusely triangular bordei 

 supporting 6 small tubercles. In dry soil, N. H. to Ohio, Mo., Fla. and Tex 

 Also in Cuba. June-Sept. 



6. Scleria verticillata Muhl. Low Nut-rush. (I. F. f. 667.) Roots fibrous 

 culms very slender or filiform, 3-angled, smooth or nearly so, erect, 1-5 dm. tall 

 Leaves very narrowly linear, o. 5-1 mm. wide, erect, shorter than the culm ; spike 

 lets in several separated clusters ; bracts bristle-like ; scales glabrous ; achen« 

 globose, 1 mm. in diameter, crustaceous, marked by sharp distinct transverse ridges 

 or somewhat reticulated ; hypogynium none. In moist meadows, E. Mass. to Ont 

 and Mich., south to Fla., Tex. and Mex., and in the W. I. Plant, especially th> 

 roots, fragrant in drying. July-Sept. 



17. ELYNA Schrad. 



Low tufted arctic and mountain sedges, with erect slender mostly leafles] 

 culms, the narrowly linear leaves clustered at the base, and small 2-flowered spikel 

 lets in a narrow terminal cylindric spike. Scales of the spikelet 3 or 4, distinaf 

 usually only one of them flower-bearing ; the staminate flower of 3 stamens, tbj 

 pistillate of a single pistil. Bristles or perianth wanting. Style slender, 3 -clef J 

 not jointed to the oblong ovary. Achene obtusely 3-angled, sessile. [Greek, sigj 

 nifying covering, perhaps in allusion to the overlapping scales.] Four or fi\] 

 species of the arctic and alpine regions of the northern hemisphere. 



1. Elyna Bellardi (All.) C. Koch. (I. F. f. 668.) Culms very slendel 

 1-4.5 dm. ^11, longer than the very narrow leaves. Old sheaths fibrillose, browiB 

 margins of the leaves more or less revolute; spike subtented by a short bract, <j 

 bractless, densely flowered or sometimes interrupted below, 1.5-3 cm. long, 3-4 mm 

 in diameter; achenes rather less than 2 mm. long, 1 mm. thick, appressed. ] 

 arctic America from Greenl. to Bering Sea, south in the Rocky Mountains to Col 

 Also in Europe and Asia. Summer. 



18. KOBRESIA VVilld. (See Appendix.) 



Slender arctic and mountain sedges, with erect culms leafy below, and few-seven 

 flowered spikelets clustered in a terminal spike. Scales of the spikelets i-flowere 

 the lower usually pistillate, and the upper staminate. Stamens 2-3. Periant 

 bristles or pengynium wanting. Ovary oblong, narrowed into a short style; stigm 

 2-3 linear. Achene obtusely angled, sessile. [In honor of Von Kobres, 

 naturalist of Augsburg.] Three or four species, widely distributed in arctic a 

 mountainous regions. 



I. Kobresia bipartita (All.) Britton. (LF. f. 669.) Culms solitary or tuffc 

 smooth <>r very nearly so. I 3 dm. tall. Leaves about I mm. wide, infolded 

 leasl in drying, the old sheaths becoming fibrillose; spike 3 em. long or lees, co 

 posed of several or numerous linear appressed or ascending spikelets; scale's son 

 what serrulate on the keel, rather more than 1 mm. long; mature achenes sliglr 





