Medium-sized smooth barked tree with small thin buttresses and stilt roots. Twig, leaf bud, stipule and leaf as H. beeeariana. Panicle to 4 cm long axillary, rarely terminal, shortly grey-brown pubescent or glabrescent, terete, borne singly; singly or doubly branched, the branchlets bearing up to 5 distichous flowers. Leaf bud small, ovoid. Calyx shortly pubescent outside, glabrous within; 2 outer lobes ovate, acuminate, 3 inner lobes suborbicular, mucronate, thinner. Petals small, ovate, obtuse, pubescent on parts exposed in bud. Stamens 15, in 3 whorls; filaments broad at base, tapering somewhat abruptly distally; anthers subglobose; appendage to connective as long as anther, slender. Ovary ovoid, glabrous; style as long as ovary, without distinct stylopodium, filiform, ± villous towards base. Fruit calyx glabrous; 2 longer lobes to 6 by 1.4 cm, spatulate, narrowly obtuse, tapering to 3 mm broad above the to 5 by 4 mm deeply saccate thickened base; 3 shorter lobes to 9 by 7 mm, ovate, acute, saccate, thickened, frequently hiding the nut. Nut to 8 by 7 mm, broadly ovoid, style remnant to 2 mm long, filiform.
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