圆叶土蜜树 yuan ye tu mi shu

Bridelia poilanei Gagnepain.

Small shrubs, 1-2(-3) m tall; branches lenticellate, glabrous throughout, shortly and sparingly branched, with some spines. Stipules lanceolate or oblong, ca. 2.5 mm, early caducous; petiole 2-5 mm; leaf blade usually broadly elliptic, sometimes rotund, 2-6 × 1.5-4 cm, leathery, glabrous, base shallowly cordate or rounded, apex rounded; lateral veins 5-8 pairs. Flowers axillary, solitary or fascicled; bracts triangular, 1-1.5 mm. Male flowers 2-5 mm in diam.; pedicels very short to absent; sepals triangular, ca. 2 × 1-1.5 mm; petals spatulate, apex rounded or lobulate; staminal column ca. 1 mm; anthers rotund or ovate; disk cup-shaped, surrounding staminal column and rudimentary ovary, 1.6-2 mm in diam. Female flowers: sepals triangular, 2-2.5 × 1.5-2 mm; petals rhomboid to spatulate, 0.8-1.2 × 0.6-1 mm, entire at apex; disk annular, ca. 0.5 mm high; ovary (semi)globose; styles 2, bifid. Drupes globose, 5-6 mm in diam., blackish, 2-celled. Seeds semiglobose with deep adaxial furrow, ca. 4.5 mm in diam., brown, pusticulate. Fl. May-Nov, fr. Sep-Dec.

Dune thickets, sandy soil. Hainan [Vietnam].