Oaks of the World

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 Quercus engleriana
Author Seemen 1897 Bot. Jahrb. Syst. 23(57): 47
Synonyms dolichostyla A.Camus 1934
kongshanensis Y.C.Hsu & H.Wei Jen 1976 Acta Phytotax. Sin. 14(2): 85
lanceolata Qu & Zhang 1984, nom. illeg.
lyoniifolia Cheng 1950
obscura Seemen 1897 not Trel.
shangxiensisZ.K. Zhou 1998 Acta Bot. Yunnan. 20: 44
sutchuenensis Franch. 1899
Local namesba dong li ;
RangeChina (Shaanxi), Tibet, Assam ; 700 to 2700 m ; introduced in Europe in 1900 by Wilson ;
Growth habit6-8 m, but may reach 15 m;
Leaves 6-14 x 3.5-4.5 cm; semi-evergreen; oval lanceolate; thick, very stiff; pointed, base rounded or cordate or sometimes somewhat cuneate; hairless and rough above, pubescent beneath except fascicled hairs sometimes remaining at vein axil; margin entire or sometimes  toothed near apex; 10-13 vein pairs strongly raised beneath; petiole 1-2 cm, tomentose becoming glabrous;
Flowers May-June; female inflorescences 1-3 cm at leaf axil, terminal on young shoots, bearing to 10 flowers;
Fruits acorn ovoid 1-2 cm long, mucronate, glabrous; cup shallow enclosing 1/3 of nut, sessile, 0.8-1 cm in diameter; scales oval-lanceolate 1 mm long, brown tomentose near base, glabrous and reddish at apex; maturing in 1 year;

Bark, twigs and
buds

bark dark brown, thin; young twigs yellow grey tomentose, becoming glabrous; oblong, brownish lenticels; buds narrow;
Hardiness zone, habitatprobably hardy; all types of soils;
Miscellaneous -- Sub-genus Cerris, Section Ilex;
-- A. Camus : n° 139;
-- For The Plant List 2013, Q. kongshanensis is a true species.
Subspecies and
varieties
-- Q.marlipoensis Hu & Cheng 1951 (Acta Phytotax. Sin. 1: 142) is very close to Q.engleriana in its southern range (SE Yunnan, at 1100 m), with larger leaves (15-22 x 6-11 cm) sometimes oboval and with 16-20 vein pairs;
Pictures

drawing