. 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. 92 POLYGONACEAE {BUCKWHEAT FAMILY) Seed-time: July to October. Range: Throughout the United States and southern British America. Habitat: Meadows, pastures, farmyards, and waste places. The root of this plant is spindle-shaped, thick, yellow, often two or three feet long. Stem two to four feet tall, erect, slender, smooth, finely grooved, simple or with a few branches near the top. Basal leaves oblon
. 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. 92 POLYGONACEAE {BUCKWHEAT FAMILY) Seed-time: July to October. Range: Throughout the United States and southern British America. Habitat: Meadows, pastures, farmyards, and waste places. The root of this plant is spindle-shaped, thick, yellow, often two or three feet long. Stem two to four feet tall, erect, slender, smooth, finely grooved, simple or with a few branches near the top. Basal leaves oblong lance-shaped, six inches to more than a foot in length, with margins usually wavy- curled ; petioles long and stout; upper leaves much smaller, with shorter petioles. Flowers in large, simple or compound racemes, often more than a foot in length, growing in crowded whorls on slender, jointed pedicels; they are small and green- ish, without petals, but having six stamens; styles three, with stigmas tufted; calyx of six sepals in double rows of three, the inner ones heart-shaped, beautifully veined, uniting to form valves that enclose the seed, giving it triple wings, which assists . its distribution by wind; all three valves have a rather thick, rounded, corky tubercle on the back. Achenes three-sided, plump, with rounded tips, smooth, shining, about one-twelfth of an inch long. Birds are very fond of them and forage on the brown, weather- They are a very common impurity of clover and alfalfa seeds; and, though the task of removing them is difficult, it is not so strenuous as grubbing Docks. (Fig. 53.). Fig. 53. — Yellow or Curled Dock (Rumex crispus). X |. beaten panicles all winter. Means of control Prevent seed production. In order to destroy the perennial roots, deep and frequent cutting, with hoe or spud, is necessary. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
