Archidendron microcarpum (Benth.) Nielsen, Adansonia ser. 2, 19, 1 (1979)Latin for 'with small fruits'.
Small, straight-boled tree to 22 m high, bole up to 10.5 m high, 39 cm in diameter. Occasionally with buttresses to 0.6 m high. Bark smooth, not fissured, but occasionally slightly cracked, grey, grey-green or greybrown; inner bark and cambium dark red or brownred exuding a whitish yellow latex after slashing, sapwood white or yellowish white, sometimes streaked with red. Branchlets terete, densely puberulous or shortly tomentose, brownish when young, later on reddish and scaly. Leaves: rachis 1-17 cm, tomentose, glands circular, often with raised central part, sessile or subsessile, 1-2 mm in diameter; pinnae 1-3 pairs, to 15 cm, puberulous or tomentose; petiolules to 5 mm, puberulous or tomentose; leaflets 1-4 pairs per pinna, opposite, chariaceous, drying brownish, usually somewhat unequal-sided, ovate elliptic, obovatc-elliptic, or lanceolate, (2.5-)5- 15 by (l-)3-7 cm, base symmetrically or asymmetrically broadly cuneate, or rounded, apex acuminate with obtuse tip; both surfaces glabrous but major veins occasionally scarcely puberulous; principal lateral veins 6-9 per leaflet-half, arching, non-parallel; reticulation prominulous above, prominent beneath. Inflorescences terminal, densely puberulous or tomentose, consisting of pedunculate glomerules aggregated into panicles to 30(-40) by 60 cm; glomerules composed of c. 3 shortly pedicellate flowers, pedicel 0.3-0.8 mm; floral bracts oblong, acute, c. 1 mm, densely puberulous. Flowers pentamerous, bisexual. Calyx green, shallowly cup-shaped or subrotate, c. 0.5 mm, sericeous; teeth hardly visible, deltoid, acute. Corolla white, yellowish-green or pale green, campanulate, 2.5-3 mm, finely sericeous especially in the distal part, lobes ovate-elliptic, acute, reflexed, 1-1.5 mm. Stamens white or yellowish green, c. 8-11 mm, the tube equalling the corolla-tube. Ovary solitary, scarcely sericeous. Pods: two kinds of pods usually present; sterile ones in the outer part of the infructescence, reddish to bright orange, densely contorted, puberulous or glabrous, c. 0.5 cm wide; fertile pods in the central part of the infructescence, reddish to bright orange outside, reddish orange within, contorted into a circle 2-3 cm in diameter, valves 0.5-1.5 cm wide, coriaceous, c. sinuate between the seeds, puberulous or glabrous, veins inconspicuous, dehiscing first along the ventral suture. Seeds black with a bluish bloom, ellipsoid, c. 7-8 by 6 mm. [from Flora Malesiana]