*Tanacetum vulgare L.

Leaves pinnatisect, c. 10 cm long and 6 cm wide; ultimate segments c. 2 mm wide, often toothed. Heads numerous, 6–7 mm diam. Florets yellow. Ray scarcely developed. Cypselas 1–2 mm long. Strongly scented perennial up to 1 m high. Widespread. Garden escape near habitation. Introd. from the Mediterranean. Fl. summer. Tansy