Small tree. All parts apparently glabrous. Twigs c. 5 by 3 mm towards the apices, stout, compressed, smooth; stipule scars slender but clearly evident, amplexicaul. Bud to 25 by 7 mm, falcate-lanceolate, compressed, acute. Stipules to 11 by 5 cm, very large, elliptic, subacute, not at first caducous. Leaves 24-35 by 11-18 cm, large, +-broadly oblong, thickly coriaceous; base cordate; apex obtuse or shortly broadly acuminate; nerves 11-13 pairs, obscure above, prominent beneath, at 45°-70°, remotely subscalariform, slender but evident beneath; midrib applanate above, prominent beneath; petiole 4-6.5 cm long, stout, drying rugose. Flowers and inflorescences unknown. Fruit entirely glabrous. Pedicel to 5 mm long and Ø, stout. 3 longer calyx lobes to 15 by 3 cm, spatulate, obtuse, glabrous, tapering to c. 1.5 cm broad above the to 1.5 by 1.8 cm broadly elliptic saccate thickened base; 2 shorter lobes to 10.5 by 1.5 cm, spatulate, subacute, similar at base. Nut to 2 by 2 cm, ovoid, glabrous; style remnant to 4 mm long, filiform.