. 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. 330 HYDROPHYLLACEAE (WATESLEAF FAMILY) segments lance-shaped and again cut or toothed, sticky-hairy, the upper leaves and bracts often spinescent. Flowers blue, about an eighth of an inch broad, in dense, axillary clusters; corolla funnel-form, with five spread- ing lobes and five included stamens; the calyx has five spine-tipped, viscidly hairy lobes as long as the corolla tube. Capsule' three-celle
. 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. 330 HYDROPHYLLACEAE (WATESLEAF FAMILY) segments lance-shaped and again cut or toothed, sticky-hairy, the upper leaves and bracts often spinescent. Flowers blue, about an eighth of an inch broad, in dense, axillary clusters; corolla funnel-form, with five spread- ing lobes and five included stamens; the calyx has five spine-tipped, viscidly hairy lobes as long as the corolla tube. Capsule' three-celled and three-valved with eight to twelve seeds in each cell. Seeds very small, and when wet are mucilaginous, which helps them to be car- ried about on farming tools and to adhere to the feet of animals. (Fig. 228.) Means of control Put the land under cultivation with a hoed crop. In pastures, meadows, and waste places the plants should be closely and repeatedly cut during the growing season, entirely pre- —Skunk- venting seed development. Burn over rankly 7^arrosa)V °xl. *" mfested ground where the plants have matured, thus destroying the seeds on the surface. The seed is said to be short-lived, and if the plant is not allowed to reproduce itself it must soon be suppressed. NYCTELEA Ellisia Nyctelea, L. (Macrocalyx NyctUea, Kuntze.) Native. Annual. Propagates by seeds. Time of bloom: April to June. Seed-time: May to July. Range: New Jersey to Minnesota and the Saskatchewan, south- ward'to Virginia, Missouri, Nebraska, and Colorado. Habitat: Grain fields, meadows, waste places. Although this plant ranges nearly across the Continent, it is most troublesome as a weed in the wheat-growing country of the Northwest, where it appears early in spring, makes a rapid growth. 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
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
