Oaks of the World

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

  Quercus dinghuensis
Author C.C.Huang 1978
Synonyms Cyclobalanopsis dinghuensis (C.C. Huang) Y.C.Hsu & H.Wei Jen 1993
Local names ding hu qing gang ;
Range China (Guangdong, in the Dinghu Shan); to 1000 m ;
Growth habit reaches 8 m;
Leaves 8-9 x 2-2.5 cm; oblong elliptic; evergreen; apex rounded, base cuneate or remotely rounded; margins entire and slightly revolute; at first very tomentose, becoming glabrous; dark green above, grey green beneath; 12-13 vein pairs; petiole 1-1.5 cm;
Flowers  
Fruits acorn elliptic, 3-3.5 cm long, 1.7-2 cm wide; most often paired; enclosed 1/3 by cup; cup 1.8 cm long x 2-2.5 cm wide, glabrescent, hard, 4 mm thick, with scales not denticulate in 4-5 concentric rings; scar 5 mm wide; stylopodium persistent;

Bark, twigs and
buds

young shoot grey brown, sulcate, waxy, tomentose; older twig ash grey, hairless;
Hardiness zone, habitat broad-leaved evergreen forests, in mountains;
Miscellaneous -- Sub-genus Cyclobalanopsis;
Subspecies and
varieties
 
Pictures

drawing