| 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; |
| Hardiness zone, habitat | not quite hardy; prefers wet sites; |
| Miscellaneous | -- A. Camus : n°
63; -- Sub-genus Cerris, Section Cyclobalanopsis; -- Section Glauca, sub-section Lamellosae (Menitsky); |
| Subspecies and varieties |
-- 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; |
| Pictures |
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