Tree 15-30 m. Leaves membranous to thinly chartaceous, oblong (-lanceolate), 10-27 by 3-7.5 cm, base attenuate, apex acute-acuminate; Inflorescences with rather dense hairs 0.2-0.3 mm; Fruits 5-10 per infructescence, short-ellipsoid, 1.7-2 by 1.4-1.7 cm, pubescent at very base, with coarse paler-coloured lenticel-like tubercles;
Asia-Tropical, Bird's Head present, Papua Barat present, subprov. Manokwari present
Malesia: Papua Barat (Bird's Head, subprov. Manokwari).
Much related to H. basifissa, of which sterile specimens are difficult to identify since their twigs too are rather ridged. Horsfieldia angularis is distinguished from H. basifissa by 1) the more strongly ridged and somewhat stouter twigs, 2) the more hairy and 2-4-lobed flowers with thicker lobes, 3) the hairy ovary and the thinly pubescent ellipsoid fruits. Both species have thickish, subglobose male buds, which hardly collapse on drying, and which at anthesis are cleft to the base.