Trees; trunks armed, the branchlets glabrous. Leaves apparently odd-pinnate; petiole and rachis more or less canaliculate above, glabrous, together, 44.0-53.5 cm long; leaflets apparently alternate, oblong, abruptly acuminate apically, oblique and inequilateral basally, the margins crenate, the blade pellucid punctate only at the bases of the crenations, membranaceous, glabrous, 6.5-17.5 cm long, 3-6 cm wide, the petiolules winged, to 5 mm long. Staminate panicles terminal (?), congested, the branchlets scabridulous. Staminate flowers green in bud, the pedicels to 1 mm long, scabridulous; sepals 5, broadly triangular, glandular punctate, the margins hyaline, ciliate, ca. 1 mm long, the outer 3 larger; petals 5, obovate, glandular punctate; stamens 5; ovary ovoid, sharply 5-lobed and each lobe bilobed, glandular punctate, glabrous, star shaped in cross section, less than 1 mm in diameter, the styles 3, free. Carpellate flowers and follicles unknown.