. Common weeds of the Canadian Prairies;. Weeds. Helianthus subtuberosus Bourgeau TUBEROUS-ROOTED SUNFLOWER A perennial with creeping rootstocks, often with spindle-shaped, fleshy roots, 3 to 10 feet high. Leaves stalkless or very short stalked, lanceolate, 2 to 6 inches long, narrow, very rough on both sides. Heads on long stalks, H to 2i inches across, with yellowish center. Common in moist saline soils, especially in southern Heliotropium curassavicum L. var. obovatum DC. SPATULATE-LEAVED HELIOTROPE A perennial from thick, fleshy, white, running roots, 12 inches high. Plants smooth,
. Common weeds of the Canadian Prairies;. Weeds. Helianthus subtuberosus Bourgeau TUBEROUS-ROOTED SUNFLOWER A perennial with creeping rootstocks, often with spindle-shaped, fleshy roots, 3 to 10 feet high. Leaves stalkless or very short stalked, lanceolate, 2 to 6 inches long, narrow, very rough on both sides. Heads on long stalks, H to 2i inches across, with yellowish center. Common in moist saline soils, especially in southern Heliotropium curassavicum L. var. obovatum DC. SPATULATE-LEAVED HELIOTROPE A perennial from thick, fleshy, white, running roots, 12 inches high. Plants smooth, with a slight bloom giving a waxy appearance. Leaves fleshy, spatulate, with distinct veins, I to 2 inches long. Flowers i inch across, white or with a bluish tinge, at the end of branches, in several scorpioid spikes i to 4 inches long. Found in saline slough margins in southwest but not generally 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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