. 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. 3°4 CYPERACEAE. Vol. I. 19. Cyperus rotundus L. Nut-grass. Fig. 739. Cyperus rotundus L. Sp. PI. 45. 1753- Cyperus Hydra Michx. Fl. Bor. Am. 1: 27. 1803. Perennial by scaly tuber-bearing rootstocks, culm rather stout, 6-20' high, usually longer than the leaves. Leaves 1V-3" wide, those of the involucre 3-5, the longer equalling or exceeding the inflores- c
. 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. 3°4 CYPERACEAE. Vol. I. 19. Cyperus rotundus L. Nut-grass. Fig. 739. Cyperus rotundus L. Sp. PI. 45. 1753- Cyperus Hydra Michx. Fl. Bor. Am. 1: 27. 1803. Perennial by scaly tuber-bearing rootstocks, culm rather stout, 6-20' high, usually longer than the leaves. Leaves 1V-3" wide, those of the involucre 3-5, the longer equalling or exceeding the inflores- cence ; umbel compound or nearly simple, 3-8-rayed, the longer rays 2'-$' long; spikelets linear, closely clustered, few in each cluster, acute, 4"-io" long, i"-\\" wide; scales dark purple-brown or with green margins and center, ovate, acute, closely appressed when mature, about 3-nerved on the keel; stamens 3; style 3-cleft, its branches exserted; achene 3-angled, about one-half as long as the scale. In fields, Virginia to Florida, Missouri, Kansas and Texas. Adventive in southern New York and in ballast deposits at eastern seaports. Tropical America, and the Old World. A troublesome weed in the South. Coco- grass, Round-root. July-Sept. 20. Cyperus Hallii Britton. Hall's Cyperus. Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Britton, Nathaniel Lord, 1859-1934; Brown, Addison, 1830-1913. New York, Scribner
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
