Bulletin Volume 121-135 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ... French Weed, Wild Garlic, Oe Stink-weed. Thlaspi arvense, (L). A winter annual, introduced from Europe, and a very bad weed. It is very abundant in Manitoba and is becoming rather common in Ontario. It grows as an erect plant, with a number of branches.from the upper part. The leaves are numerous during the first of the season, and clasp the stem by ear-line lobes. The flowers are white and small, with spreading flower stalks. The pods which succeed the flower are very characteristic. They are nearly orbicular, about half an inch broad, quite flat, with a broad wing all around, and notched at the top. Fig. 14 shows this peculiarity. Each pod produces about twelve seeds, which are dark brown to black and oval in shape, with curved lines. An average plant produces about 20,000 seeds. The plant has a peculiar odour, resembling that of garlic, hence some of the common names. The seed also has a very pungent taste. When eaten by milch cows, it imparts a disagreeable flavor to the milk. Time of flowering, May-September. Time of seeding, June-September. Dispersal--chiefly by the wind. Eradication. Continuous growing of hoed crops with thorough cultivation thereof, followed by heavy seeding with rye. In places where the weed is very thick, mowing and burning is a good remedy. The method outlined for eradicating Mustard is applicable to this weed. (Fig. 15). Fig. 15. Wild Mustard, Charlock, Or Herrick. Brassica sinapistrum, (L). Among the worst weeds in Ontario is the Wild Mustard, an annual, naturalised from Europe, with fibrous roots and erect habit of growth. The stem is rough, with stift. hairs somewhat scattered over the surface. The branches arise from the upper part of the stem and bear oblong leaves; and the lower leaves have one terminal large lobe and sev...