Bidens beckiana (Forest Brown) Sherff

Erect subshrubs 0.7–1.3 m tall. Leaves simple, 1.5–9.5 cm long including petiole, blades narrowly ovate or lanceolate, 1–7 × 0.8–4 cm, glabrous or pubescent toward the base and in a line along the petiole, margins serrulate, apex acuminate. Heads (1–)3(–4), in diffuse cymes terminating main stem and lateral branches, 5–15 mm in diameter excluding rays, peduncles 1.5–11.8 cm long, glabrous; outer involucral bracts 4–9 mm long, broad and tapering somewhat at the base, apex sometimes erose, inner bracts sometimes erose at apex; ray florets 5–11, sterile, rays yellow, 9–15 × 2–3 mm wide, apex entire or divided into 2–3 acute to rounded lobes; disk florets ca. 30–34, perfect, corollas yellow. Achenes gray, straight or slightly curved, 8–10 × 1 mm, conspicuously setose; pappus of 2 antrorse barbed awns.

Marquesas Islands, occurring on Eiao and Hatutaa, 150–500 m.

Bidens beckiana là một loài thực vật có hoa trong họ Cúc. Loài này được (F.Br.) Sherff mô tả khoa học đầu tiên năm 1937.