. 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. 16. Eleocharis simplex (Ell.) A. Dietr. Twisted Spike-rush. Fig. 773. Scirpus simplex Ell. Bot. S. C. & Ga. 1: 76. 1816. Scirpus toriilis Link, Jahrb. 3: 78. 1820. Eleocharis tortilis Schultes, Mant. 2: 92. 1824. Eleocharis simplex A. Dietr. Sp. PI. 2: 78. 1833. Annual, roots fibrous, culms tufted, filiform, sharply 3-angled, pale green, erect or reclining,
. 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. 16. Eleocharis simplex (Ell.) A. Dietr. Twisted Spike-rush. Fig. 773. Scirpus simplex Ell. Bot. S. C. & Ga. 1: 76. 1816. Scirpus toriilis Link, Jahrb. 3: 78. 1820. Eleocharis tortilis Schultes, Mant. 2: 92. 1824. Eleocharis simplex A. Dietr. Sp. PI. 2: 78. 1833. Annual, roots fibrous, culms tufted, filiform, sharply 3-angled, pale green, erect or reclining, twisting when old, i°-ii° long. Sheaths obliquely truncate, i-toothed; spike- let ovoid or oblong, subacute, several-flowered, 2"-3" long, about 1" thick, much thicker than the culm; scales firm, pale, ovate, mostly obtuse; bristles 4-6, rigid, retrorsely barbed, about equalling the achene and tubercle; stamens 3; style 3-cleft; achene obovoid, obscurely 3-angled, strongly reticulated, longitudinally about 18-ribbed; tuber- cle cap-like or conic, truncate at the base, one-fourth to one-half as long as the achene. In wet soil, New Jersey to Florida and Texas, near the coast. July-Sept. 17. Eleocharis tuberculosa (Michx.) R. & S. Large-tubercled Spike-rush. Fig. 774. Scirpus tuberculosus Michx. Fl. Bor. Am. 1: 30. 1803. Eleocharis tuberculosa R. & S. Syst. 2: 152. 1817. Annual, culms tufted, slightly compressed, very slender, rather stiff, striate, bright green, 8-2° tall. Upper sheath obliquely truncate or i-toothed; spike- let ovoid, obtuse or subacute, many-flowered, 3"-6" long, nearly 2" in diameter; scales broadly ovate, ob- tuse, pale greenish-brown with a darker midvein, broadly scarious-margined, firm, tardily deciduous; bristles 6, rigid, downwardly or rarely upwardly barbed, about as long as the achene and tubercle; stamens 3; style 3-cleft; achene obovoid, pale, trigonous, strongly reticu- lated, longitudinally about 18-ribbed;
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
