Macropanax decandrus G. Hoo

Trees, to 7 m tall. Trunk 18-30 cm d.b.h. Petiole 2.5-14 cm; petiolules 1-5 cm; leaflets 3-5, oblong-elliptic or oblong, 7.5-18 × 3-9 cm, papery, glabrous, secondary veins 4-6 pairs, base cuneate or broadly cuneate, margin entire, minutely thickened, revolute, apex abruptly shortly acuminate. Inflorescence paniculate, glabrous throughout; primary axis 5-12 cm, secondary axes 2-5.5 cm; pedicels 4-5 mm at anthesis, to 1.8 cm in fruit. Calyx glabrous, 7-10-toothed, sometimes obscurely so. Stamens 7-10. Fruit ovoid-globose, 1.1-1.3 cm × 8-9 mm; styles persistent, ca. 2 mm, undivided. Fl. Feb, fr. Apr-Jun.

Hainan.

● Dense forests in valleys, forest margins on mountain slopes; 700-1200 m.