*Bidens subalternans DC.

Leaflets deeply divided or the leaves bipinnate, 5–7-lobed linear to lanceolate, 4–11 cm long. Ray yellow, up to 1 cm long. Involucral bracts herbaceous. Erect ± glabrous herb up to 2 m high. Coast. Weed of cultivation and waste places. Introd. from S. America. Fl. spring–summer. Beggars Ticks