. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. 464 COMPOSITAE (.COMPOSITE FAMILY). Fig. 324. — Purple Cone-flower (Brauneria pur pared). X j. The range of this weed is being rapidly extended by the agency of baled hay and grass seeds. It is a i handsome - plant, two to four feet tall, with slender, rough-hairy stem, usually without branches. Leaves dark green, three to eight inches in length, alternate or the lower ones opposite, lance-shaped, ha
. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. 464 COMPOSITAE (.COMPOSITE FAMILY). Fig. 324. — Purple Cone-flower (Brauneria pur pared). X j. The range of this weed is being rapidly extended by the agency of baled hay and grass seeds. It is a i handsome - plant, two to four feet tall, with slender, rough-hairy stem, usually without branches. Leaves dark green, three to eight inches in length, alternate or the lower ones opposite, lance-shaped, hairy, long- pointed, the lower ones five-ribbed, toothed, and petioled, the upper ones entire and sessile. Heads targe, soli- tary, with a conical disk having deep purple, tubular, perfect, and fertile florets surrounded by twelve to twenty large, drooping rays which are pistillate but sterile; these are dull magenta-red, about two inches long, notched at their tips. Bracts of the involucre imbricated in three to five rows, rather soft and lax, nearly linear, and finely hairy. Achenes short and thick, the pappus a toothed crown. (Fig. 324.) Means of control If the infestation is new and the area not too large, it will pay to rid the soil of the perennial roots by hand-pulling the plants before the development of seed. Rankly infested ground requires to be put under cultivation. PRAIRIE CONE-FLOWER Lipachys columnaris, T. & G. {Ratibida columnaris, D. Don.) Other English names: Long-headed Cone-flower, Cone-headed Daisy. Native. Perennial. Propagates by seeds. Time of bloom: May to 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 Georgia, Ada Eljiva, 1859-1921. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
