*Conyza sumatrensis (Retz.) E.Walker

Pappus straw-coloured, c. 3 mm long. Involucral bracts reddish-brown inside. Heads in an extensive panicle. Erect perennial up to c. 2 m high. Widespread. Weed of cultivation and waste places. Introd. from N. America. Fl. most of the year. Tall Fleabane