Tree 4-25 m. Leaves membranous, elliptic-oblong to oblong-lanceolate, 6-14 by 1.7-4.5 cm, base attenuate, apex acute-acuminate, upper surface drying brown, sometimes with paler pustules or blotches; Inflorescences subglabrous or with sparse hairs 0.1 mm; Fruits 1—5(—10?) per infructescence, globose to short-ellipsoid, or obovoid, base rounded or contracted into a pseudostalk up to 2 mm, ridged or not, drying brown or blackish, 1.5-2.5 by 1.5-2 cm, glabrescent but often with remnants of indumentum towards base (lens!), without or with few coarse lenticels or tubercles;
Asia-Tropical, Central present, Fergusson and Normanby I present, Gulf Prov present, Madang present, Milne Bay Prov present, Morobe present, Northern present, Papua New Guinea present
Malesia: Papua New Guinea (Madang, Morobe, Northern, and Milne Bay Prov., including Fergusson and Normanby I., Central and Gulf Prov.).
1 Characterized by slender twigs, small thin leaves with often reddish-tinged midrib beneath, small subglobose glabrous male perianths, much larger female flowers with pubescent ovary, and short-ellipsoid, dark brown or blackish, dry fruits, with 4-6 mm thick woody pericarp. 2 A few deviating specimens which key out near H. sinclairii possibly represent separate, as yet undescribed taxa and are discussed by De Wilde (1985: 112).