Oaks of the World

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  Quercus stewardiana
Author A.Camus 1934
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; elliptic-lanceolate to oblong-elliptic; leathery; thick; apex acuminate to caudate, base cuneate; margin remotely serrate near apex; 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
buds

twigs hailess;
Hardiness zone, habitat not quite hardy; rocky slopes in subtropical forests;
Miscellaneous -- A. Camus : n 42 ;
-- Sub-genus Cyclobalanopsis;
-- related to Q.langbianensis ;
Subspecies and
varieties
 
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