Japanese name: オオバギ（大葉木） Scientific name:Macaranga tanarius var. tomentosa
An evergreen small tree 4–10 m tall, growing in secondary forests and open woodlands.
It is dioecious.
The branches are thick, and young branches are hairy.
The leaves are simple and alternate, attached peltately to long petioles 6–15 cm long.
The leaves are 10–25 cm long, broadly ovate to ovate-oblong or triangular-ovate, with entire or toothed margins, and the underside is densely covered with yellow glandular dots and scale-like hairs.
5–7 lateral veins radiating from the point where the petiole attaches are conspicuous.
The inflorescences arise from the leaf axils.
The male inflorescence is 13–30 cm long, racemose or paniculate; the male flowers are small, spherical to ovoid, yellowish green and without petals, and are borne in large numbers in the axils of ovate bracts.
The female inflorescence is shorter than the male one and racemose, bearing a few female flowers, which are small, yellowish green and without petals.
The fruit is a capsule 5–15 mm long and 10 mm wide, flattened-spherical, with glandular dots and spines on the surface.
The seeds are spherical, about 5 mm in diameter.
