Tree, 3-10 m tall, unarmed or bearing axillary spines; twigs pubescent. Leaves simple; petioles broadly obcordate-winged, articulate at apex; blades oval to broadly ovate, rounded to retuse at apex (bluntly pointed on young shoots), 8-20 cm long, 6-15 cm wide, sparsely pubescent at least on veins below. Flowers 5-parted, solitary or usually clustered in axils, 2-2.5 cm long, very fragrant; petals white, broad; stamens 20-25; ovary globose; style columnar; stigma large, capitate. Fruits globose or depressed-globose,10-15 cm diam, smooth, pale yellow, sour; segments ca 12. Croat 4210.