American Feverfew (Wild Quinine)
A perennial with stems single, usually unbranched below the flower cluster. Sometimes grows in colonies. Flowerheads in flat-topped or slightly rounded, fuzzy white clusters about ¼ inch wide. Ray florets few, tiny, inconspicuous. Blooms May–September. Basal and lower stem leaves are aromatic, to 8 inches long and 4 inches wide, tapering into long petioles (leaf stems), elliptical to broadly ovate, roughened with short, stiff hairs, with a coarsely toothed or scalloped margin. Leaves and stems with tiny spherical yellow glands.