. 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. 304 VMBELLIFERAE {PARSLEY FAMILY) United carpels ovoid, nearly as broad as long, each of the two having five sharply keeled ridges. These seeds may remain dormant in the soil for several years and should never be permitted to sow themselves. (Fig. 211.) Means of control If the infestation is new, hand-pull as soon as discovered and destroy it. Being annual, it is necessary only to prevent seed develo
. 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. 304 VMBELLIFERAE {PARSLEY FAMILY) United carpels ovoid, nearly as broad as long, each of the two having five sharply keeled ridges. These seeds may remain dormant in the soil for several years and should never be permitted to sow themselves. (Fig. 211.) Means of control If the infestation is new, hand-pull as soon as discovered and destroy it. Being annual, it is necessary only to prevent seed development in order to suppress the weed. MEADOW PARSNIP Thdspium atireum, Nutt. Native. Perennial. Propagates by seeds. Time of bloom: June to July. Seed-time: August to September. Range: New York to the Carolinas, westward to Arkansas and Nebraska. Habitat: Moist meadows, waste places, open woodlands. When it first appears in the spring, the young shoots of this plant sometimes give an unpleasant flavor to dairy products; later the cattle reject it, though it seems to be not so noxious as other members of its tribe. Stems smooth, one to two feet high, with few branches. Base leaves heart-shaped, smooth, sharply toothed, long-petioled; those of the stem three-parted — sometimes twice ternate — the lateral leaflets sessile or nearly so, the terminal one stalked, long ovate to lance-shaped, finely toothed. Flowers deep golden yellow, the compound umbel about two inches broad. Carpels small, ovoid or nearly globose, smooth, the ribs standing out like wings. (Fig. 212.) Ranging nearly with this plant is a close relative, the Hairy-jointed Meadow Paesnip. Fig. 212.— Mead- ow Parsnip (Thas- pium aureum). *X.\.. 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
