American Feverfew (Wild Quinine)
A perennial with stems single or branched. Flowerheads in flat-topped or slightly rounded, fussy white inflorescences about ¼ inch wide. Ray florets few, tiny, inconspicuous. Blooms May–September. Leaves are aromatic, to 8 inches long and 4 inches wide, tapering into long petioles (leaf stems), elliptical to broadly ovate, soft-hairy, with a toothed or scalloped margin. Often forms clumps.