. 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. COMPOSITAE (COMPOSITE FAMILY) 413 both sides. Heads in large, rather loose, terminal cymose clusters, deep reddish purple; florets all perfect and fertile with tubular, five-lobed corollas; stamens five, united in a tube about the cleft-tipped style, a characteristic of all composites; in- volucre top-shaped, purple-tinged, its bracts imbricated in several series, closely appressed. Achenes bristly r
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. 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. COMPOSITAE (COMPOSITE FAMILY) 413 both sides. Heads in large, rather loose, terminal cymose clusters, deep reddish purple; florets all perfect and fertile with tubular, five-lobed corollas; stamens five, united in a tube about the cleft-tipped style, a characteristic of all composites; in- volucre top-shaped, purple-tinged, its bracts imbricated in several series, closely appressed. Achenes bristly ribbed, with a double pappus, the outer row of short, very stiff, scale- like bristles, the inner row much longer, of many fine, rough hairs. (Fig. 288.) Means of control In cultivated crops, the perennial roots are destroyed by the plow and the following tillage, but in land where there is danger of washing, or which for other reasons is not desired to be put under cultivation, the grubbing-hoe or the scythe must be Fig. 288. — Tall Ironweed (Fer- persistently used. Cut closely in ™niaaltissima). x U. May, repeating in June, and again in August and September, thus preventing all seed development and exhausting the roots of all sustenance supplied by the leaf-growth.. WESTERN IRONWEED Verndnia fasciculata, Michx. Native. Perennial. Propagates by seeds. Time of bloom: July to September. Seed-time: September to November. Range: Ohio to South Dakota, southward to New Mexico and Texas. Habitat: Prairies, hillsides, woodland borders, meadows, pastures, roadsides, and waste places.. 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 work.. Georgia, Ada Eljiva, 1859-1921. New York : Macmillan