Tree to 30 m high, to 90 cm girth. Branchlets glabrous or puberulous, glabrescent. Leaves: Stipules not seen. Flowers yellowish white, turning dark yellow at anthesis. Petals 2.5-3.5 mm, oblong, acute, usually glabrous but occasionally puberulous towards the apex. Stamens 3-4.5 mm; Ovary 1.6-2.2 mm, densely sericeous (with a few appressed hairs); Seeds bright scarlet red, suborbicular to ellipsoid or broadly obovoid, 5.5-7(-8) by 4.5-7 by 4 mm, areole running c. 1 mm from the margin of the seed, open towards the hilum.
Andaman Islands present, Asia-Tropical: Jawa (Jawa present); Lesser Sunda Is. present; Malaya (Peninsular Malaysia present); Thailand (Thailand present), Burma present, S China present, Timor present
Burma, S China, Indo-China, Thailand, Andaman Islands; in Malesia: Malay Peninsula, Java, Lesser Sunda Islands (Timor), also cultivated.
Formerly included as a variety in A. pavonina (Nielsen 1980,1981,1985), but indumentum, leaf, flower and seed characters appear to be sufficiently different in A. microsperma for specific distinction (see the Key to the species (p. 166), and Nielsen 1992).