. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 182 CYPEKAUEAIi (SKUGJi I-'AMILY;) 242. E. olivacea. S pikelet x 2%. Achene X 10. E. atropurpurea. Splkelet X 2%. Achene x 10. vei-y pale and thin, mm. long; achene often equaling the Ijristles, tipped by a short slender conical tubercle. — Wet places, Va. to Pla. (W. I., S. A.) Fio. 241. 5. E. olivHcea Torr. Culms flatfish, grooved, diffusely tufted on usually slender matted rootstocks, 2-15 cm. high; splkelet oblong-ovoid, acutish, MSO
. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 182 CYPEKAUEAIi (SKUGJi I-'AMILY;) 242. E. olivacea. S pikelet x 2%. Achene X 10. E. atropurpurea. Splkelet X 2%. Achene x 10. vei-y pale and thin, mm. long; achene often equaling the Ijristles, tipped by a short slender conical tubercle. — Wet places, Va. to Pla. (W. I., S. A.) Fio. 241. 5. E. olivHcea Torr. Culms flatfish, grooved, diffusely tufted on usually slender matted rootstocks, 2-15 cm. high; splkelet oblong-ovoid, acutish, MSO-flowered, 3-7 mm. long; scales ovate, obtuse, ratlier loosely imbricated, 2-3 mm. long, witli a shghtly scarious margin ; achene obovoid, dull, green to blaclsish, 1 mm. long, shorter than the 6-8 bristles; tubercle capping J of the summit of the achene, saucer-shaped, tipped by a long conic- subulate beak. — Wet shores, Me. to Ont., H. to N. C, Pa., 0., and Mich. Fig. 242. 6. E. atropurpurea (Retz.) Kunth. Dwarf tufted annual; culms capillary, arcuate, 3-7 cm. long; splkelet oblong-ovoid, 2-4 mm. long ; scales ovate, thin-membranqceous, blunt, dark brown, with pale midrib and margin; achene lenticular-obovoid, lustrous, black, with a minute saucer-shaped tubercle; bristles white, shorter than the achene. —Wet sand, "; to Col., and southw. (Eurasia, ) Pig. 243 7. E. capitkta (L.) R. Br. Culms terete, dm. high; spikelets ovoid to cylindric (3-5 mm. long), obtuse, 15-40-flowered ; scales thickish, round-ovate, obtuse, pale brown, with green keel and paler margins; stamens 2; achene obovoid, black, about equaling the 0-8 bristles, tipped with a flattened or saucer-shaped tubercle. — In sand or gravel near sloughs, Md. to Fla. and Tex. (W. I., S. A.) Fig. 244. Var. dlspar (E. J. Hill) Fernald. Scales purple- brown ; achenes purple-black. (S. dispar E. J. Hill.)— Wet sand. Lake Co., Ind. 8. E. didndra C. Wright. Erect or depressed ; culms dm.
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