Trees evergreen, to 26 m tall, to 1.2 m d.b.h. Bark brown, exfoliating; branchlets rust-brown tomentose. Petiole robust, terete, 2-10 cm, rust-colored tomentose; leaf blade broadly elliptic or obovate-elliptic, 15-30 × 9-18 cm, leathery, abaxially densely brown tomentose, adaxially pubescent only on midvein, lateral veins 9-12 per side, prominently raised abaxially, conspicuous adaxially, base rounded, rarely obtuse or slightly cordate, margin entire or toothed near apex, apex rounded with acumen ca. 1 cm. Flowers axillary at twig apices. Pedicel 2-3 cm, slightly robust, brown pubescent, upper 1/2 usually curved downward. Sepals 4 or 5, ovate, pubescent, apex obtuse. Petals slightly shorter than sepals, broader than long, incised at apices. Anthers ca. as long as filaments. Ovary ovoid, brown pubescent. Capsule 4-or 5-valved; valves 3-4 × 1-1.3 cm, 5-6 mm thick; exocarp ca. 1.5 mm thick, slightly woody, with many short prickles; prickles easily deciduous, brown, ca. 2 mm; mesocarp ca. 4 mm thick, woody; endocarp purple-red adaxially, thin. Seeds ca. 1.5 cm. Fl. May-Jun, fr. Oct.
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An evergreen tree. It grows 26 m tall. The trunk is 1.2 m across. The bark is brown and peels off. The leaf stalk is 2-10 cm long and is robust. The leaves are broadly oval and 15-30 cm long by 9-18 cm wide. The flowers are in the axils of leaves at the tip of the twigs. The fruit is a capsule with 4-5 valves. The seeds are 1.5 cm long.
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