Shrub or small tree 1-8 m high, resprouting from base. Branchlets ferruginous appressed-pubescent to ±woolly-ferruginous over white-tomentose. Leaves terete, not grooved, 3-8 cm long, 1-1.5 (-1.8) mm wide, wholly glabrescent; apex strongly uncinate, with mucro 0.8-2 mm long. Inflorescence of 6-22 flowers; rachis simple, 1-3 mm long, densely ferruginous appressed-pubescent; pedicels 3.5-7 mm long; pedicel and perianth white and ferruginous appressed-pubescent. Perianth 5-6 mm long. Pistil 7-10 mm long. Fruit 2-3 cm long, 1.5-2 cm wide, smooth, sometimes pusticulate; horns blunt, usually conspicuous, to 2 mm long. Seed 14-20 mm long, 7-8.5 mm wide; wing decurrent c. 1/2-2/3 way down one side only, grey-yellow to blackish.