Oaks of the World

General data Classifications List of species Local names Back to
home page

  Quercus oidocarpa
Author Korth. 1844 Verh. Nat. Gesch. Ned. Bezitt., Bot. 216
Synonyms Cyclobalanopsis oidocarpa (Korth.) Oerst. 1867
brevistyla A.Camus 1933 (A. Camus : n° 44 )
Local names
Range Sumatra, Borneo, Java, west Malaysia; 600-1500 m;
Growth habit reaches 30 m tall; trunk to 0.5 m in diameter; 
Leaves 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;
Flowers 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;
Fruits 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;

Bark, twigs and

bark dark grey, fissured into rectangular plates; twig initially densely stiff pubescent, then glabrescent, with lenticels; terminal buds ovoid-globose 3-5 mm long; stipules linear, acute, 3-4 mm long, densely fulvous simple tomentose;  
Hardiness zone, habitat not hardy;
Miscellaneous -- A. Camus : tome 1, p. 213, n° 15;
-- Sub-genus Cerris, Section Cyclobalanopsis;
-- Section Oidocarpa, sub-section Oidocarpae (Menitsky).

Subspecies and