. 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. 358 LABIATAE (MINT FAMILY) stamens ascending against it, the lower lip three-lobed and spread- ing. Seeds small, ovoid nutlets. (Fig. 248.) Means of control Drainage of the ground; prevention of seed development by- close cutting early in the season. Cultivation of the soil at once destroys the perennial roots. AMERICAN PENNYROYAL Hedebma pulegMdes, Pers. Other English names: Mock Pennyroyal, Squaw M
. 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. 358 LABIATAE (MINT FAMILY) stamens ascending against it, the lower lip three-lobed and spread- ing. Seeds small, ovoid nutlets. (Fig. 248.) Means of control Drainage of the ground; prevention of seed development by- close cutting early in the season. Cultivation of the soil at once destroys the perennial roots. AMERICAN PENNYROYAL Hedebma pulegMdes, Pers. Other English names: Mock Pennyroyal, Squaw Mint, Stinking Balm, Mosquito Plant, Tickweed. Native. Annual. Propagates by seeds. Time of bloom: July to September. Seed-time: August to October, Range: Cape Breton Island to Ontario and Minnesota, southward to Florida and Nebraska. Habitat: Thin meadows, upland pastures, and in open woods about old stumps. The oil distilled from this herb is much used in making the "mosquito dopes" which hunters and fishermen and many other persons are obliged to use in localities where mosquitoes are a plague; the plant is also used medicinally and the leaves and flowering tops, collected in full bloom and dried, are worth one to three cents a pound. In taste and odor the plant is very like the true Pennyroyal, which is European. Stem erect, square, very slender, softly hairy, much branched, six inches to a foot in height. Leaves a half-inch to an inch long, thin, oblong-ovate, sparingly toothed, obtuse at apex, and narrowed to short petioles. Flowers in small axillary clusters, on short, hairy Fig. 249.—Ameri- peduncles; calyx hairy, the three upper teeth ZZTSoZ). triangular, the two lower ones awl-shaped; x |. corolla lavender or pinkish, about a quarter-inch. 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
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
