. 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. 88 VRTIOACEAE (NETTLE FAMILY) with a stamen inserted at base; fertile flowers also have four sepals, the inner pair curving over and persistently enclosing the seed as it matures. Achenes very small, flattened ovoid, numer- ous. (Fig. 48.) Means of control Close cutting in June and again in August, using dry salt to check recovery. In yards and roadsides the rootstocks should be grubbed out and destr
. 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. 88 VRTIOACEAE (NETTLE FAMILY) with a stamen inserted at base; fertile flowers also have four sepals, the inner pair curving over and persistently enclosing the seed as it matures. Achenes very small, flattened ovoid, numer- ous. (Fig. 48.) Means of control Close cutting in June and again in August, using dry salt to check recovery. In yards and roadsides the rootstocks should be grubbed out and destroyed. The plants cut or pulled should be dried for a few days and then burned so as to ensure destruction of the seeds. GREAT, OR STINGING, NETTLE Urtlca dioica, L. Introduced. Perennial. Propagates by seeds. Time of bloom: July to September. Seed-time: September until out off by frost. Range: Nova Scotia to Ontario and Minnesota, southward to South Carolina and Missouri. Habitat: Waste places and roadsides. Not a very common plant, which is fortunate, since its stings are so venomous as to cause acute discomfort for a considerable time. It is well to know that dilute alcohol will almost im- mediately relieve the burning and itching pain. (Fig. 49.) Stem two to four feet tall, stout, four-ridged, hollow, densely set with fiercely stinging hairs. Leaves long-oval, long-pointed, one to three inches wide and three to six inches long, three to five-nerved, rounded or heart-shaped at base, coarsely but sharply toothed, clothed with the venomous hairs; petioles much shorter than the blades. The flowers are small and greenish, similar to those of the preceding species, growing in large, compound clusters from the axils of the upper leaves, the fertile and the staminate flowers usually on different Fig. 49. —Sting- ing Nettle (Urtica dioica). X i-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - col
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
