. Common weeds of the Canadian Prairies;. Weeds. Silene noctiflora L. NIGHT-FLOWERING CATCHFLY An erect, hairy, sticky annual 1 to 3 feet high. Leaves hairy, sticky, basal ones oblanceo- late, 2 to 5 inches long with short stalks, upper lanceolate, 1 to 3 inches in length and stalkless. Sepals united in a tube i inch long with light- and dark-green upright stripes. Petals white, deeply cleft, opening only at night. An intro- duced weed becoming plentiful throughout southern areas. Sinapis arvensis L. WILD MUSTARD. An introduced annual, 1 to 2 feet high, with scattered stiff hairs. Lower leaves
. Common weeds of the Canadian Prairies;. Weeds. Silene noctiflora L. NIGHT-FLOWERING CATCHFLY An erect, hairy, sticky annual 1 to 3 feet high. Leaves hairy, sticky, basal ones oblanceo- late, 2 to 5 inches long with short stalks, upper lanceolate, 1 to 3 inches in length and stalkless. Sepals united in a tube i inch long with light- and dark-green upright stripes. Petals white, deeply cleft, opening only at night. An intro- duced weed becoming plentiful throughout southern areas. Sinapis arvensis L. WILD MUSTARD. An introduced annual, 1 to 2 feet high, with scattered stiff hairs. Lower leaves 4 to 6 inches long, stalked, deeply lobed; upper stalkless, less divided, often entire. Flowers yellow, f inch across. Pods linear, rough, i to i inch long, with slight constructions between seeds and with a flattened beak which sometimes contains a seed. Common throughout area in grain fields and waste places, especially moister sites and on heavy 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 Canada. Dept. of Agriculture. Research Branch. Ottawa, Queen's Printer
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Keywords: ., bookcentury1900, bookpublisherottawaqueensprin, booksubjectweeds
