Oaks of the World

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  Quercus lamellosa
Author Sm. 1819 Cycl. 29: 23
Synonyms Cyclobalanopsis lamellosa (Sm.) Oerst. 1867
Cyclobalanopsis fengii Hu & Cheng 1951
Cyclobalanopsis nigrinervis Hu 1951
imbricata Buch- Ham. ex D.Don 1825
lamellata Roxb.1832
lamelloides (C.C. Huang) Y.T. Chang 1996
lamellosa var. nigrinervis (Hu) Zhou & Sun 1996
paucilamellosa A.DC 1864
Local names Buk oak ; bao pian qing gang ;
Range India, Thailand, Bhutan, Myanmar, Nepaul, Sikkim, China ((Yunnan, W Guangxi, Xizang) ; 1300-2700 m
Growth habit 30 m tall, or more; trunk to 1.5-2.5 m in diameter;
Leaves 15-35 cm x 5-10 cm; evergreen; leathery; oval-elliptic; apex acuminate to caudate, base usually cuneate (sometimes rounded); margin apical 2/3 denticulate; shiny, glabrous adaxially; whitish, slightly blue green beneath from a thin, stellate pubescence; 18-30 vein pairs, impressed above and prominent beneath; tertiary veins evident abaxially; petiole 3-5 cm long;
Flowers blooms in April-May; fruits in November of next year; male flowers on catkins shorter than leaves; pistillate flowers on very shorts inflorescences bearing 3-4 cups;
Fruits big, flattened acorn, 2-3 cm long, 3-4 cm in diameter; smooth; enclosed 2/3 to 4/5 by cup; cup sessile, 2-3 cm long, 3-5 cm in diameter, 7-10 concentric rings with flaking edges at maturity; basal scar 2-3 cm wide, flat or slightly convex; stylopodium persistent, 5 mm thick; maturing in 1 year;

Bark, twigs and

bark grey brown, rough; young twigs yellow tomentose, becoming hairless; bud globose;
Hardiness zone, habitat not quite hardy; prefers wet sites;
Miscellaneous -- A. Camus : tome 1, p. 322, n° 63;
-- Sub-genus Cerris, Section Cyclobalanopsis;
-- Section Glauca, sub-section Lamellosae (Menitsky);

Subspecies and
-- var. nigrinervis (Hu) Zhou & Sun 1996 Acta Bot. Yunnan. 18: 220
= Cyclobalanopsis nigrinervis Hu 1951
= Q.lamelloides Huang 1992
= Cyclobalanopsis lamelloides (Huang) Chang 1996
Tibet only; actually it is the type;


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