Small smooth-barked stilt-rooted tree. Young twigs, buds, stipules, petioles and base of midrib above caducous pale tawny pubescent or glabrous. Twig c. 3 mm ø, terete to somewhat compressed, smooth, prominently ribbed below the petiole insertion; stipule scars short, obscure. Bud to 2 by 1 mm, conical, acute. Stipule to 8 mm long, linear, subpersis-tent. Leaf (16-)27-46 by (5-)8-15 cm, very large, oblong, coriaceous, prominently convex between the depressed nerves on the upper face; base cordate, unequal; acumen to 2.5 cm, long, slender; nerves 16-30 pairs, slender but prominent beneath; tertiary nerves densely scalariform, slender but evident beneath; petioles 5-8 mm long, short, stout. Flowers unknown. Panicle and fruit entirely glabrous. Panicle to 12 cm long, axillary to ramiflorous, frequently to 2-axillary, terete, lax, singly branched; branchlets to 3 cm long, ascending, bearing to 5 flowers; bracteoles c. 2 mm long, linear, subpersistent. Pedicel c. 1 mm long, short. 2 longer calyx lobes to 13 by 3 cm, ± broadly spatulate, obtuse, c. 6 mm broad above the c. 12 by 10 mm ovate thickened saccate base; 3 shorter lobes to 20 mm long, lanceolate, acute, similarly saccate but hardly thickened at base, enfolding the nut. Nut to 10 by 6 mm, ovoid; style remnant to 2 mm long, filiform.
On low, damp hillsides and, most frequently, banks of sluggish or tidal, but not brackish rivers, but apparently intolerant of prolonged root immersion. Locally frequent.
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