. Common weeds of the Canadian Prairies;. Weeds. Asclepias speciosa Torr. SHOWY MILKWEED An erect, milky-sapped perennial with deep taproots, usually in large colonies, to 21 feet high. Leaves broad, oval, rounded or somewhat heart-shaped at base, with whitish down, 3 to 6 inches long. Flowers pinkish-purple to flesh- colored, T to i inch across, in dense, round umbels 2 to 3 inches in diameter. Fruit a folHcle or large pod, containing many tufted Astragalus bisulcatus (Hook.) A. Gray TWO-GROOVED MILK-VETCH A stout, many-stemmed perennial, 1 to 3 feet high, with a strong odor. Leaves c
. Common weeds of the Canadian Prairies;. Weeds. Asclepias speciosa Torr. SHOWY MILKWEED An erect, milky-sapped perennial with deep taproots, usually in large colonies, to 21 feet high. Leaves broad, oval, rounded or somewhat heart-shaped at base, with whitish down, 3 to 6 inches long. Flowers pinkish-purple to flesh- colored, T to i inch across, in dense, round umbels 2 to 3 inches in diameter. Fruit a folHcle or large pod, containing many tufted Astragalus bisulcatus (Hook.) A. Gray TWO-GROOVED MILK-VETCH A stout, many-stemmed perennial, 1 to 3 feet high, with a strong odor. Leaves composed of 17 to 27 elliptic leaflets, each f to 1 inch long. Flowers deep purple, i inch long, in long dense racemes. Flowers and pods usually drooping. Pods i to f inch long, with 2 deep grooves. Quite common on prairies and in coulees. May cause selenium poisoning in cattle and sheep. Also a host plant for the caragana blister beetle. Astragalus pectinatus Dougl. NARROW-LEAVED MILK-VETCH. 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
