Vasilis Teodoridis:
Dipterocarpaceae | Hopea
2. Hopea hainanensis Merrill & Chun; Sunyatsenia. 5: 134. 1940.
?? po lei
Trees ca. 20 m tall; with aromatic white resin. Bark gray or brown; flaky; white lenticellate. Petiole robust; ca. 2 cm; glabrous or farinose-scurfy; leaf blade oblong to oblong-ovate; 4-8 x 5-8 cm; thinly leathery; both surfaces glabrous or farinose-scurfy; lateral veins 9-12 pairs conspicuously raised abaxially; base rounded; margin entire; apex slightly obtuse or acuminate. Flowers arranged in lax panicle of unilateral racemes. Sepals ovate; ca. 2.5 mm; apex rounded; outer 2 pubescent on entire surface. Petals oblong or oblong-elliptic; ca. 6 mm. Stamens 15; anthers ovoid; connective appendages filiform; ca. 1 mm. Ovary and stylopodium ovoid; pubescent; style short; glabrous; stigma conspicuous. Fruit ovoid; waxy; apiculate; winglike calyx segments oblong or oblanceolate; 5-7 x ca. 2.5 cm; longitudinally 9-11-veined; sparsely stellate pubescent. Fl. Jun-Jul; fr. Nov-Dec.
Dense forests; ca. 700 m. Hainan [N Vietnam].
This is an endangered species of scattered occurrence. The durable wood is used for making boats and building bridges and houses.