Oaks of the World

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  Quercus dinghuensis
Author C.C.Huang 1978 Acta Phytotax. Sin. 16(4): 74
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;
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

young shoot grey brown, sulcate, waxy, tomentose; older twig ash grey, hairless;
Hardiness zone, habitat broad-leaved evergreen forests, in mountains;
Miscellaneous -- Sub-genus Cerris, Section Cyclobalanopsis;
-- Threatened (IUCN Red List Category : CR)

Subspecies and