High tree, glabrous; branchlets nigrescent. Leaves (oblong-)elliptic, ± abruptly obtusely acuminate (rarely subrotundate) at the apex, ± rounded at the base, inequilateral, thick-coriaceous, shining, entire, (11-)13-18 by (5-)7-10(-12) cm; midrib and lateral nerves reddish when dry, midrib +-flat above, very prominent beneath, lateral nerves 6-7 pairs, subcurvate, prominent specially beneath, veins laxly transverse and reticulate, raised on both sides; petiole very stout, 2-3 mm diam., thickened at apex and base, grooved by numerous transverse linear lenticels. Cymes short, on a thick, 5 mm long peduncle, nearly glabrous, not yet known in full developed state. ♂ Flowers: very similar to those of H. kunstleri. Female flowers and fruit unknown.
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