*Richardia stellaris (Cham. & Schldl.) Steud.

Floral leaves narrow-ovate, up to 5 mm wide, usually glabrous on the upper surface. Leaves narrow-ovate to ovate, up to 2.5 cm long. Flowers often few per head some of which are often cleistogamous. Corolla 4-lobed; tube 2–4 mm long. Prostrate perennial with stems up to 15 cm long. Widespread. Weed of cultivation and waste places. Introd. from S. America. Fl. spring–summer