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*A medium-sized tree of up to 25 m tall, bole with a diameter of up to 50 cm, bark surface slightly cracked, inner bark pale yellowish-brown; young parts glabrescent; leaves .*Leaves lanceolate to narrowly elliptical, 5-13 cm × 2-5 cm, leathery, base cuneate, acumen slender, up to 1.5 cm long, venation scalariform, midrib slightly depressed above, secondary veins 6-8 pairs, ascending at 40-5050°, slender but raised beneath, depressed above; calyx .*Calyx densely buff sericeous, lobes ovate, acute, the outer 2 somewhat longer and comparatively narrower than the inner 3, stamens 10, equal, forming a ring around the ovary, ovary and stylopodium glabrous, cylindrical, truncate, surmounted by a short style; mature .*Mature fruits unknown.  ''H. depressinerva'' is confined to granodiorite hill slopes, where it appears to occur locally gregariously in mixed dipterocarp forest below 500 m altitude.