Oaks of the World

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  Quercus myrsinifolia
Author Blume 1850 Mus. Bot. 1: 305
Synonyms Cyclobalanopsis myrsinifolia (Blume) Oerstedt 1871
bambusaefolia Fortune 1860 not Hance 1857
bambusifolia Mast. not Hance
glauca fo. subintegrifolia Ling 1952
vibrayeana Franch. & Sav. 1878
Local names shira-kashi ; xiao ye qing gang ;
Range South China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Henan, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, Taiwan, Yunnan, Zhejiang); Japan; Korea; Laos; Thailand; Vietnam; 200-2500 m; introduced in Europe in 1854 by Robert Fortune:
Growth habit to 10 m tall, sometimes more, but shrubby in cultivation; often multitrunk; the width of crown is the same as the height of the tree;
Leaves 5-12 x 2-4 cm ; evergreen (2 years); oval to elliptic-lanceolate; hard; hairless on both sides; light green above, slightly glaucous beneath; young leaves are purple-bronze, glabrous; remotely dentate in apical half; apex acuminate to shortly caudate, base cuneate or almost rounded; 9-14 vein pairs, straight, with midrib slightly impressed above; petiole 1.5 cm long, yellow green, hairless;
Flowers male flowers in early summer; pistillate flowers on young shoots, 2 to 6 on a slender peduncle;
Fruits acorn 1.4-2.5 cm long, 1-1.5 cm wide; in clusters of 2 to 8, on a 3-4 cm long peduncle; dark brown; enclosed 1/3 or 1/2 by cup; cup 5-8 mm long, 10-18 cm wide, whitish pubescent outside, glabrous inside, thin (less than 1 mm), with 6-9 concentric rings, not denticulate at margin; scar flat, 5 mm in diameter; stylopodium evident, with 5-6 rings; maturing first year;

Bark, twigs and
buds

bark dark pinkish-grey, smooth, with thin orangish furrows; twigs hairless, slender, grey brown, with raised lenticels looking like warty; buds ovoid, obtuse, hairy at tip, 3-6 mm long;
Hardiness zone, habitat hardy; prefers lime-free soils; rather slow-growing ;
Miscellaneous -- A. Camus : n° 40 ;
-- Sub-genus Cerris, Section Cyclobalanopsis;
-- Section Glauca, sub-section Glaucae (Menitsky);
-- Also written "myrsinaefolia"
-- For Govaerts & Frodin (1998) it was a synonym of Q.glauca ..but later (2002) they consider there are 2 true species..
Subspecies and
varieties
_ Q.vibrayeana is probably a true species, in South Japan, different from Q.myrsinifolia in having larger, adaxially dark green, abaxially silvery leaves, with 12-15 vein pairs; hardy; all types of soils; handsome small tree with a shrubby habit;
Pictures

drawing