. 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) 531 Means of control The rootstocks are shallow and horizontal in their growth, and plowing the rankly infested pasture or meadow kills them in one season as they decay with the sod. Small areas may be removed by deep hoe-cutting. Flowering stalks should be cut in their first bloom, in order that none of the plumed achenes may be dispersed by the wind. BRISTLY OX-TONGUE
. 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) 531 Means of control The rootstocks are shallow and horizontal in their growth, and plowing the rankly infested pasture or meadow kills them in one season as they decay with the sod. Small areas may be removed by deep hoe-cutting. Flowering stalks should be cut in their first bloom, in order that none of the plumed achenes may be dispersed by the wind. BRISTLY OX-TONGUE Plcris echoldes, L. Other English names: JBugloss Pioris, Bitter Bugloss. Introduced. Annual or biennial. Propagates by seeds. Time of bloom: July to September. Seed-time: August to October. _ Range: Locally distributed in Nova Scotia and Ontario and near the sea- ports of the Atlantic States; has reached as far inland as Ohio. Habitat: Fields, roadsides, and waste places. The achenes of this plant have been reported as an impurity in alfalfa seeds; it is a very unpleasant weed, rejected by grazing animals because of its bitter juices and prickly-hairy foliage, and it should, if possible, be hindered from extending its range. Stems fifteen to thirty inches tall, branched, and closely set with stiff, prickly bristles. Lower and basal leaves large, spatulate, irregularly toothed, narrowed to margined petioles; stem- leaves much smaller, usually entire, sessile and clasping. Heads yellow, in spreading corymbose panicles, on short peduncles, each about a half-inch broad, the outer bracts of the involucre very large and leaf-like, prickly-hairy, the inner ones membranous, narrow and. Fio. 367.— Bristly Ox- tongue (Picris echoides). 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, 1859-1
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
