. 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. CRUGIFERAE {MUSTARD FAMILY) 189 lance-shaped in outline but deeply and irregularly toothed or some- what pinnatifid, narrowing to peti- oles. Flowers in terminal racemes, each about a half-inch broad, golden yellow. Siliques about an inch long, linear, somewhat flat- tened and almost beakless, erect, on very slender spreading pedicels; the two cells of the pod each con- tain a double row of small red
. 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. CRUGIFERAE {MUSTARD FAMILY) 189 lance-shaped in outline but deeply and irregularly toothed or some- what pinnatifid, narrowing to peti- oles. Flowers in terminal racemes, each about a half-inch broad, golden yellow. Siliques about an inch long, linear, somewhat flat- tened and almost beakless, erect, on very slender spreading pedicels; the two cells of the pod each con- tain a double row of small reddish brown, slightly flattened seeds. (Fig. 132.) Means of control Prevent seed production by close cutting or pulling before the first flowers mature. HARE'S-EAR MUSTARD Conringia orientalis, Dumort. Other English names: Rabbit-ears, Hare's-ear Cabbage, Klinkweed. Introduced. Annual and winter annual. Propagates by seeds. Time of bloom: Late June to Sep- tember. Seed-time: August to October. Range: Ontario and Manitoba, Appearing locally in other states and provinces. Habitat: Grain and flax fields; waste places and along railways. Fig. 132. — Sand Rocket (Diplotaxis muralis). X ?• Minnesota and the Dakotas. Brought to this country in flax seed from Europe about 1892, this weed has since spread through all the grain-growing section of the Northwest and bids fair to be still more widely known. Autumn plants send down a main root with many branching rootlets, and form a tuft of thick, smooth leaves, three to six inches long, broadly oval, rounded at tip and tapering toward the base, the edges entire, and the surface covered with a bloom like a cabbage; in fact the. 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
