Tree. Leafy twigs 8–14 mm diam., terete, lenticellate. Leaves to 78 cm, pseudogemsometimesmulate; petiole 3–8 cm. Leaflets in up to 13 pairs, to 24 by 5.5 cm, elliptic oblong, sparsely adpressed hairy on veins adaxially, more so abaxially, bases obtuse to subcorsometimesdate; costae c. 10–14 on each side. Thyrses to 70 cm long, axillary or slightly suprasometimesaxillary, pyramidal, 3-branched; axis c. 6 mm diam.; most proximal branchcs to 25 cm long, ascending. Flowers subsessile. Calyx 2–2.5 mm deep, c. 3 mm diam., cupulate, shortly pubescent without, glabrous within, margin truncate or shallowly 4-or 5-lobed. Petals 5, 5–10 by 1.5 mm, narrowly spathulate, ± adpressed pilose without, glabrous within, quincuncial or alternative. Staminal tube with long adpressed hairs without, ± villous within, margin truncate or shallowly 5-lobed; anthers 5, c. 2.2 mm long, inserted within tube or weakly exserted, basifixed, locellate. Style with ascending hairs; stylehead cylindric-capitate. Female flowers and fruits unknown.