勐腊核果木 meng la he guo mu

Trees up to 20 m tall; branches ash gray, glabrous. Stipules small, ovate-triangular, 1.2-1.5 × ca. 0.8 mm, usually caducous; petiole 5-10 mm; leaf blade ovate to elliptic, 6-11 × 2-5 cm, leathery, base broadly cuneate to rounded, oblique, margin sparsely shallowly crenate, apex shortly caudate, sometimes obtuse; lateral veins 9-13 pairs, obliquely ascending to margins, reticulate veins prominent on both surfaces. Male flowers 3-5-clustered; pedicels ca. 4 mm; sepals 4, unequal, elliptic, 2-3 mm, margins ciliate; stamens 12-15; filaments filamentous; anthers oblong; rudimentary ovary absent. Female flowers solitary or paired; sepals as in male; ovary ovoid, 1-celled. Fruiting pedicels ca. 6 mm; drupes ovoid, 1-2 × 0.8-1.5 cm, glabrous, 1-celled, 1-seeded. Fl. May-Aug, fr. Jul-Oct.

Open evergreen forests on rocky limestone hills; ca. 500 m. S Yunnan [Thailand, Vietnam].

Material from Thailand appears to differ from Yunnan material by the inconspicuous reticulate veins.