. 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 2. SEDGE FAMILY. 3°3. 16. Cyperus fuscus L. Brown Cyperus. Fig. 736. Cyperus fuscus L. Sp. PI. 46. 1753. Annual, culms slender, tufted, 6-15' high, longer than or equalled by the leaves. Leaves rather dark green, about 1" wide, those of the involucre 4-6, the longer much exceeding the inflorescence; umbel several-rayed, somewhat compound, the rays sh
. 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 2. SEDGE FAMILY. 3°3. 16. Cyperus fuscus L. Brown Cyperus. Fig. 736. Cyperus fuscus L. Sp. PI. 46. 1753. Annual, culms slender, tufted, 6-15' high, longer than or equalled by the leaves. Leaves rather dark green, about 1" wide, those of the involucre 4-6, the longer much exceeding the inflorescence; umbel several-rayed, somewhat compound, the rays short; spikelets linear, z"-y" long, less than 1" wide, many- flowered, acute; scales ovate, subacute, becoming dark brown or remaining greenish on the keel, faintly about 3-nerved on the back, separating from the nar- rowly winged rachis as they mature; stamens 2 or 3; style 3-cleft; achene sharply 3-angled, oblong, pointed at each end, nearly as long as the scale. Waste grounds and in ballast, eastern Massachusetts to New Jersey and Maryland. Adventive from Europe. July-Sept. 17. Cyperus Haspan L. Sheathed Cyperus. Fig. 737. Cyperus Haspan L. Sp. PI. 45. 1753. Perennial by short rootstocks (sometimes an- nual?), roots fibrous, culms slender, weak, tufted, i°-3° high. Lower leaves reduced to membranous acuminate sheaths, those of the involucre about 2, usually less than 1" wide, commonly little exceed- ing or shorter than the inflorescence; umbel several- rayed, simple or compound, the longer rays i'-2' long; spikelets few, capitate, linear, acute, many- flowered, 3"-6" long, about i" wide; scales oblong or oblong-lanceolate, reddish-brown, acute, mucron- ulate, keeled, 3-nerved; rachis narrowly winged; stamens 3; style 3-cleft, scarcely exserted; achene 3-angled, broadly obovoid, obtuse, nearly white, very much shorter than the scale. In swamps, Virginia to Florida and Texas, mostly near the coast. Also in tropical America and in the warmer
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
