Oaks of the World

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  Quercus dentata
Author Thunb. 1784 Syst. Veg. ed. 14 858
Synonyms obovata Bunge 1833
daimio K.Koch 1873, or hort.
koreana Nakai 1914
dentata subsp koreana (Nak.) A.Camus 1938
pseudodentata Uyeki 1932
pinnatifida Franch. & Sav. 1878
dentata var. pinnatifida (Franch. & Sav.) Matsum. 1891
dentata var. grandifolia Koidz. 1912
dentata var. skworzovii Kozlov 1933
Local names daimyo oak; kashiwa oak; hu shu ;
Range Japan, Korea, China; 100-2700 m; introduced in Europe in 1830;
Growth habit may reaches 15 m, but is most often stunted; crown sparse, loose;
Leaves 15-30 x 6-20 cm, and more; semi-persistent; oboval; leathery; crowded towards branchlet apex; base attenuate, narrow, rounded to heart-shaped; margin sinuate-lobed; lobes rounded apically; dark green, rough above; pubescent below; 4-10 vein pairs; petiole 2-15 mm, stout, hairy;
Flowers April-May; female flowers at the end of new shoots;
Fruits acorn 1.5-2.2 cm, ovoid, hairless; sessile cup 1 cm wide, with brownish tomentose, reflexed scales, covering 1/2 or 1/3 of nut; matures in 1 year;

Bark, twigs and
buds

bark thick, corky, strongly furrowed, dark brown; branchlet sulcate, densely pubescent, becoming hairless and brown; bud conic to rounded, tawny, 1 cm;
Hardiness zone, habitat hardy; prefers acidic soils; slow growing; can't stand spring frost;
Miscellaneous

-- A. Camus : n° 122;
-- Sub-genus Quercus, section Quercus;
-- Wood hard, heavy;
-- There is a wellknown cultivar, very nice : Q.'Pondaim' : it is probably a hybrid between Q.pontica and  Q.dentata (= daimio), hence the name. (photo = see Q.pontica)
Subspecies and
varieties

2 subspecies:

-- 1/ subsp stewardii (Rehder) A.Camus 1938   (A. Camus : 123)
= Q.stewardii Rehder 1925
sometimes less than 3 m. ; glabrescent leaves; cup scales shorter; China from 1000 to 1800 m (Anhui, Hubei, Jiangxi, Zhejiang);
In Flora of China, it is likely a hybrid with Q.aliena var. acutiserrata, like Q.fenchengensis.

-- 2/ subsp yunnanensis (Franch.) Menitsky 1973
==> see Q. yunnanensis

-- For Govaerts, 2007, Q. koreana is actually a hybrid with Q. aliena (= Q. x maccormickii)
Pictures

drawing 1 (Q.dentata)
drawing 2 (Q.stewardii)