A deciduous, monoecious, medium-sized, sometimes fairly large tree up to 30 (max. 40) m tall; bole branchless for up to 18 (max. 32) m, with a diameter of up to 110 (max. 175) cm, without buttresses; bark surface rusty brown or deep brown, deeply fissured or cracked, with lenticels, inner bark reddish. Leaves paripinnate, with 4-6 pairs of alternate, entire, asymmetrical and acuminate leaflets (imparipinnate and lobed or incised when juvenile), glabrous or with simple hairs. Flowers unisexual, in axillary (sometimes appearing terminal) thyrses, tetramerous or pentamerous, up to 16 mm long; calyx lobed; petals free, contorted, reflexed in open flowers, white. Fruit an erect woody ovoid or ellipsoid capsule opening by 3-5 valves from the apex; valves separating to a woody outer and inner layer, apex of those in the inner layer deeply bifid; locules appearing as 1 locule due to the breaking of the septae; columella with sharp ridges. Seeds 60-100 per locule, flat, with terminal wings arranged in layers. |
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