Mappia obtusifolia Merrill, Lingnan Sci. J. 14: 28. 1935.

Shrubs or trees, 3-8(-24) m tall. Bark gray; branches terete, glabrous. Leaves alternate or nearly opposite at apices of branches; petiole terete, 1.5-2.5 cm; leaf blade olive green, oblanceolate-oblong, rarely oblong, 9-18 × 3-6.5 cm, thinly leathery, glabrous, lateral veins 6-8 pairs, arcuate ascending, forking abruptly midway to margin, laxly reticulate, prominent, reticulate veins sparse, base cuneate to acute, apex obtuse or rounded. Cymes terminal, 3-6 cm in diam.; peduncle 3-4 cm; axis slightly flattened, moderately strigose. Calyx campanulate, ca. 1.5 mm, outside strigose, margin 5-toothed. Petals white, oblong to lan-ceolate, 6-7.2 mm, outside densely yellow shortly strigose, inside weakly hirsute, apex inflexed. Stamens 5.5-6.4 mm; filaments 4-5 mm; anthers ovoid-oblong, 2-2.7 mm. Disk thin, ca. 0.3 mm tall, fleshy, outside glabrous, margin crenulate, ciliate, inside hirsute. Ovary ca. 1 mm in diam., hirsute; style ca. 2 mm, slightly hirsute; stigma 2-lobed, oblique. Drupe oblong-ovoid, 0.9-1.3 cm, 6-9 mm in diam., flattened, apex with a short mucro, glabrescent, endocarp thin, nearly smooth. Seeds 7.8-9 mm; cotyledons ovate, 5.2-6 mm wide, strongly 3-veined, base cordate; radicle cylindric, ca. 2.3 mm. Fl. and fr. Dec-Apr.

● Forests; low elevations. S Hainan (Sanya).