. 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. CYPERACEAE. Vol. I. 31. Cyperus hystricinus Fernald. Bristly Cyperus. Fig. 751. Cyperus hystricinus Fernald, Rhodora 8: 127. 1906. Perennial by corms and rootstocks; culms rather stout, smooth throughout, 30 tall or less. Leaves smooth, I"-3" wide, the basal ones shorter than the culm, those of the involucre about as long as the umbel; rays 14 or fewe
. 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. CYPERACEAE. Vol. I. 31. Cyperus hystricinus Fernald. Bristly Cyperus. Fig. 751. Cyperus hystricinus Fernald, Rhodora 8: 127. 1906. Perennial by corms and rootstocks; culms rather stout, smooth throughout, 30 tall or less. Leaves smooth, I"-3" wide, the basal ones shorter than the culm, those of the involucre about as long as the umbel; rays 14 or fewer, the longer 7' long or less; heads obovoid, or obovoid-cylindric, i'-i}' long; spikelets yellowish-brown, subulate, 2"-4" long, the uppermost spreading, all the others strongly reflexed, bearing 1 or 2 achenes; fertile scales strongly nerved; stamens 3; achene linear, trigonous, about ii" long, 3-4 times as long as the scale. Dry sandy soil, New Jersey and eastern Pennsylvania to Georgia and Texas. Except for the smooth culm and leaves closely re- sembling C. retrofractus. July-Sept. 32. Cyperus Torreyi Britton. Pine-barren Cyperus. Fig. 752. Mariscus cylindricus Ell. Bot. S. C. & Ga.' 1: 74. 1816. Cyperus cylindricus Britton, Bull. Torr. Club 6: 339. 1879. Not Boeckl. 1859. C. Torreyi Britton, Bull. Torr. Club 13: 215. 1886. Perennial by small hard corms, culms slender, smooth, usually tufted, 4'-i8' tall, longer than the leaves. Leaves smooth, i"-ii" wide, the longer ones of the involucre much exceeding the umbel; umbel simple, several- rayed, the rays short, or the longer 1/-2I' long, the sheaths 2-toothed; heads very dense, cylindric, i'-¥ long, 2"-4" in diameter; spikelets ii"-2" long, flattish, 1-2-flowered, spreading or the lower reflexed; scales green, oblong; rachis winged; stamens 3; style 3-cleft; achene linear-oblong, 3-angled, apiculate, slightly more than one-half as long as the scale. In sandy pine barrens and o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
