Lithocarpus dasystachyus Rehder

Tree 5-18 m, 10-25 cm ø; stilt-roots occasionally present; bark smooth to flaky, lenticellate, greyish brown. Branchlets densely velvety tomentose by greyish to reddish brown adpressed stellate hairs and erect simple or stellate hairs; terminal bud ovoid-globose, 2-3 by 2 mm, scales ovate. Stipules ovate-acute to deltoid, 1-2 by 1½ mm. Leaves thick-coriaceous, rigid, (12-)15-20(-25) by (4½-)6-8(-10) cm (index 2-3), broadest about the middle; surfaces more or less discolorous, above subglabrous, dull to glossy, pale greyish brown, underneath densely yellowish to reddish brown, rarely greyish, tomentose by adpressed stellate and erect simple or stellate hairs; base rounded to acute, decurrent, margin recurved, top sharply 1-2½ cm acuminate; midrib strongly prominent on both sides, densely pubescent by erect simple hairs, glabrescent; nerves 12-14 pairs, lax, prominent on both sides or impressed above, sub-parallel, at an angle of 60-70°, arcuating but not anastomosing towards the margin, densely pubescent by erect simple hairs, glabrescent above; reticulation lax, subscalariform, obscure; petiole densely yellowish brown pubescent, 8-15 mm, 2-3 mm ø, adaxially flat or furrowed. Inflorescence male, androgynous or mixed, densely yellowish brown to rufous tomentose by erect simple and adpressed stellate hairs; bracts and bracteoles ovate or deltoid, 0.7-1 by 0.5-0.7 mm. Male rachis 10-25 cm, 1-2 mm ø; ♂ flowers in clusters of 3, rarely solitary, perianth 5-6-lobed, stamens 10-12, filaments 2-2½ mm, anthers 0.25 mm long, pistil-lode subglobose, c. 1 mm ø. Androgynous or mixed rachis 10-30 cm, 2 mm ø; female flowers solitary or rarely in clusters of 2-3, staminodes rudimentary, styles 3-6, conical, 1-2 mm. Ripe cupule 2-5 mm stalked, saucer-to cup-shaped, 5-7 mm long, 13-18 mm ø; rim thin, covering c. ¼ part of the fruit; wall thin, inside densely yellowish brown to rufous-tomentose by adpressed simple hairs, outside densely yellowish brown to fulvous-tomentose by stellate hairs and erect simple hairs; lamellae 7-8, concentric, denticulate. Ripe fruit ovoid-conical, 13-15 mm long, 10-13 mm ø, densely yellowish brown to fulvous tomentose by adpressed simple hairs, subglabrescent, pale chocolate-brown, top abruptly acuminate, base rotundate, scar deeply concave, c. ½ cm ø; wall bony, c. 1 mm thick, for the greater part free from the cupule.

Forests up to 750 m, common in secondary peat-swamp and heath forest, or in primary lowland forest on poor sandy, badly drained pod-zolized soil. Fl. Sept.-Febr., fr. March-July.