Bidens L. >
Leaves pinnately divided into 3–5 segments or pinnatisectly into 5 or more segments; the lower ones sometimes simple. Cypselas up to 12 mm long, 4-angled. Pappus awns up to 3 mm long
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 Bidens subalternans