Anthemis L.
Receptacle with chaffy scales (floral bracts) Anthemis
Erect annual up to 60 cm high with an unpleasant scent when crushed. Leaves 2–3-pinnatisect, 3–4 cm long; the segments linear. Involucre 6–10 mm diam. Rays up to 15, white, 10–12 mm long. Cypselas 2 mm long, tuberculate-ribbed. Widespread. Weed of cultivation and waste places. Introd. from Europe. Fl. summer. Stinking Mayweed Anthemis cotula
Erect annual up to 60 cm high without an unpleasant scent when crushed. Leaves 1–3-pinnatisect, 2–5 cm long; the segments linear. Involucre up to 10 mm diam. Rays white, usually more than 15, 10–12 mm long. Cypselas c. 2 mm long, ribbed with smooth ribs. Western parts of the area. Weed of pastures. Fl. summer. Corn Chamomile Anthemis arvensis