Oaks of the World

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  Quercus stewardiana
Author A.Camus 1934 Chênes Atlas 1: 12
Synonyms Cyclobalanopsis stewardiana (A.Camus) Hsu & Wei Jen 1979
Cyclobalanopsis stewardiana var. longicaudata Hsu & al.
Local names he ye qing gang ;
Range China (Anhui, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Yunnan, Zhejiang); 1000-2800 m;
Growth habit usually 8 m, but reaches 12 metres tall;
Leaves 6-12 x 2-4 cm; oblong-lanceolate; leathery; thick; apex acuminate to caudate; base cuneate; margin remotely serrate near apex; hairles, shiny dark green above; whitish beneath, with some hairs or glabrescent; 8-10 vein pairs raised below; petiole 1.5-3 cm long, hailess;
Flowers July; pistillate inflorescences 2 cm long, at axil of new shoots;
Fruits acorn 0.8-1.5 cm, broadly ovoid; enclosed 1/2 by cup; cup 6-8 mm long, 10-15 mm wide, glabrescente outside, tomentose inside, with 5-9 concentric rings with denticulate margin; scar 5 mm wide, convex; stylopodium persistent; maturing in 2 years;

Bark, twigs and

twigs hailess, brown, with lenticels; small bud, ovoid, rounded, with round scales;
Hardiness zone, habitat not quite hardy; rocky slopes in subtropical forests;
Miscellaneous -- A. Camus : tome 1, p. 273, n° 42 ;
-- Sub-genus Cerris, Section Cyclobalanopsis;
-- Related to Q.langbianensis ;

Subspecies and