. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 3. SEDGE FAMILY. 3'7. 19. Eleocharis melanocarpa Torr. Black-fruited Spike-rush. Fig. 776. Eleocharis melanocarpa Torr. Ann. Lye. N. Y. 3 : 311. 1836. Perennial by short rootstocks, culms flattened, striate, tufted, slender, erect, wiry, io'-2o' tall, sometimes prolif- erous. Upper sheath truncate, 1-toothed; spikelet oblong or cylindric-oblong, obtuse, 3
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 3. SEDGE FAMILY. 3'7. 19. Eleocharis melanocarpa Torr. Black-fruited Spike-rush. Fig. 776. Eleocharis melanocarpa Torr. Ann. Lye. N. Y. 3 : 311. 1836. Perennial by short rootstocks, culms flattened, striate, tufted, slender, erect, wiry, io'-2o' tall, sometimes prolif- erous. Upper sheath truncate, 1-toothed; spikelet oblong or cylindric-oblong, obtuse, 3"-6" long, ii"-2" in diam- eter, many-flowered, thicker than the culm; scales ovate, obtuse, brown, with a lighter midvein and scarious mar- gins; bristles 3-4, fragile, downwardly hispid, equalling or longer than the achene, fugacious or perhaps sometimes wanting; stamens 3; style 3-cleft; achene 3-angled, ob- pyramidal, black, smooth, its superficial cells nearly quad- rate; tubercle depressed, covering the summit of the achene, light brown, pointed in the middle. In wet sandy soil, eastern Massachusetts and Rhode Island to Florida, near the coast. Also in northern Indiana. July- Sept. 20. Eleocharis albida Torr. White Spike-rush. Fig. JJJ. Eleocharis albida Torr. Ann. Lye. N. Y. 3: 304. 1836. Annual, roots fibrous, culms very slender, tufted, nearly terete, striate, erect, 4'-8' tall. Upper sheath very oblique and toothed on one side; spikelet ovoid- globose or oblong, obtuse, 2"-^" long, ii"-2" in di- ameter, many-flowered, thicker than the culm; scales pale green or nearly white, rather firm, ovate, obtuse, deciduous; bristles about 6, downwardly barbed, per- sistent, as long as the achene; stamens 3; style 3-cleft; achene broadly obovoid, nearly black when ripe, 3-angled, smooth; tubercle ovoid-conic, contracted or truncate at the base, about one-fourth as long as the achene. In wet soil, Maryland to Florida, Texas and eastern Mex-
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
