Quercus oidocarpa Korth.

Sumatra, Borneo, Java, west Malaysia; 600-1500 m;

reaches 30 m tall; trunk to 0.5 m in diameter;

7-17 x 3-7 cm; leathery; elliptic-oblong or oblong-lanceolate; apex acute or acuminate; base rounded or attenuate or subcordate; margin remotely serrulate on the apical half; hairless above; scattered stellate hairs beneath; 9-13 pairs of secondary veins slightly prominent beneath, impressed adaxially, parallel, at an angle of 45° with the midrib; petiole 1.5-3.5 cm long, glabrous, slightly grooved adaxially;

in March-April; male catkins 5-7 cm, pubescent; male flowers with membranous, glabrous perianth; female inflorescence 3-7 cm long, bearing 3-7 flowers ; female flowers without staminode, 3-4 styles 1-2 mm long;

acorn 2-3.5 cm long, 2.3 cm in diameter, tomentose; ovoid-globose or cylindrical; enclosed 1/2 to 3/4 by  cup; cupule halfround, attenuate and toothed at base, with 9-11 yellowish brown pubescent, denticulate or entire rings; basal scar broad, raised; from June to February;

not hardy;

– A. Camus : tome 1, p. 213, n° 15; – Sub-genus Cerris, Section Cyclobalanopsis; – Section Oidocarpa, sub-section Oidocarpae ( Menitsky ).