. Common weeds of the Canadian Prairies;. Weeds. Achillea lanulosa Nutt. WOOLLY YARROW A perennial with shallow rootstocks, 2 feet high, usually covered with silky hairs. Leaves 1 to 6 inches long, finely divided. Flowers in compact, round-tipped clusters, usually white, about i inch across. A common plant on prairie and Agrostemma githago L. PURPLE COCKLE A hairy, erect annual 1 to 2i feet high, with a taproot. Leaves linear, hairy, to 4 inches long. Flowers single, purple, at head of stems, with hairy sepals united at base and lobes much longer than petals. Seeds poisonous to chi
. Common weeds of the Canadian Prairies;. Weeds. Achillea lanulosa Nutt. WOOLLY YARROW A perennial with shallow rootstocks, 2 feet high, usually covered with silky hairs. Leaves 1 to 6 inches long, finely divided. Flowers in compact, round-tipped clusters, usually white, about i inch across. A common plant on prairie and Agrostemma githago L. PURPLE COCKLE A hairy, erect annual 1 to 2i feet high, with a taproot. Leaves linear, hairy, to 4 inches long. Flowers single, purple, at head of stems, with hairy sepals united at base and lobes much longer than petals. Seeds poisonous to chickens. Introduced from Europe. Not very 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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