Trees, unarmed. Leaves alternate, imparipinnate, stipulate. Inflorescences pa-niculate, the ultimate branches racemose; pedicels geniculate. Flowers with the hypanthium narrow at the base, oblique and cleft on the lower side toward the apex and thus spathaceous, the teeth obsolete; petals free; stamens 10, monadelphous, the sheath cleft above, the filaments short, the anthers monomorphic, dehiscing at first by 2 apical pores; ovary slender, flask-shaped, with 2 basal ovules, the style slender, the stigma minute. Fruits bearing broad, lateral wings, 1-seeded.