. 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. OOMPOSITAE {COMPOSITE FAMILY) 485 of the involucre lance-shaped, pointed, hairy on both sides, reflexed. Achenes small, brown, top-shaped nutlets, hairy at the base and crowned with a half-dozen or more bristly awns. (Fig. 336.) Means of control No composite flower, however beautiful, should be permitted to give its seeds to the wind's will. In gardens the blossoms should be clipped as they fade, and
. 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. OOMPOSITAE {COMPOSITE FAMILY) 485 of the involucre lance-shaped, pointed, hairy on both sides, reflexed. Achenes small, brown, top-shaped nutlets, hairy at the base and crowned with a half-dozen or more bristly awns. (Fig. 336.) Means of control No composite flower, however beautiful, should be permitted to give its seeds to the wind's will. In gardens the blossoms should be clipped as they fade, and where the plants "blanket" the fields they should feel the scythe or the mowing-machine blades at sight of the first gay flower. For destruction of the perennial roots the ground requires to be put under cultivation. FETID MARIGOLD Dyssddia pappbsa, Hitchc. (Boebera pappbsa, Rydb.) Other English names: Yellow Mayweed, False Mayweed, Yellow Dog-fennel, Stinkweed. Native. Annual. Propagated by seeds. Time of bloom: July to October. Seed-time: August to November. Range: Ontario and Ohio to Minnesota and Ne- braska, southward to Texas, New Mexico, and Arizona. Habitat: Fields, roadsides, and waste places. A vile weed, which is gaining ground in the Eastern States, being established in several places where it was brought in western hay, of which the refuse was spread on the fields. Stem six to eighteen inches tall, erect, smooth, dotted with pellucid glands, much branched, and very leafy. Leaves but an inch or two long, opposite, sessile, pinnately divided into narrow, spatulate, toothed segments, and also dotted with glands which exhale an offensive, fetid odor. Heads numerous, terminal, on short pe- duncles, dull yellow, but little more than a f*m'm£Ib<M quarter-inch broad; disk florets perfect and (pyssodia pap- fertile; rays few and short, pistillate; involucre posa). Please note that these images are extracted from scanned page images that may have been digi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
