Tree, 6-8 m high, dbh up to 12.5 cm. Branchlets sericeous when young; Leaves 1-3-jugate; Inflorescences axillary, branching basally to mainly along the sericeous, flattened, 2.8-16.5 cm long axis; Flowers 4-4.3 mm in diam., white. Sepals 5, ovate, margin pilose, with glands, out- and inside glabrous; Petals 5, obovate, 3.3-3.7 by 1.2-1.3 mm, blade elliptic, gradually de-current into the 0.4-0.8 mm long claw, margin pilose, out- and inside glabrous, apex obtuse; Stamens 8; Fruits with 2 or 3 well developed lobes, c. 1.3 by 1.5 cm, completely dehiscent, rugose-ru-minate, glabrous, blackish when dry; Seeds seen immature;
Asia-Tropical: Philippines (Philippines present), Central & E Luzon present, Polillo I present
Malesia: Philippines (Central & E Luzon, Polillo I.).
Fruiting specimens of G. acuminata are hardly distinguishable from G. koelreuteria; they only differ in the relatively longer leaftip and the single instead of usually many domatia.