Oaks of the World

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  Quercus utilis
Author Hu & W.C.Cheng 1951 Acta Phytotax. Sin. 1: 146
Local names tan li ;
Range Northern Vietnam (Ha Giang Province); China : SO Guangxi, SE Yunnan (Xichou Xian), Guizhou 1000-1500 m;
Growth habit reaches 10 metres tall;
Leaves 2.5-5.5 x 1.5-2.5 cm; evergreen; elliptic lanceolate or oboval; slightly leathery; apex pointed, with a short mucro; base cuneate, decurrent on the petiole; margin denticulate; shiny green above; greenish beneath, hairless except axillary stellate hairs; 9-11 vein pairs, thin, impressed adaxially; petiole 2-5 mm long, glabrescent;
Flowers April-May
Fruits acorn 1 cm long, 0.7 cm wide; ovoid; brown, hairless except at apex; singly or paired; stout, hairy, 0.5 cm long peduncle; cup bowl-shaped enclosing 1/3 of nut, 6-7 cm in diameter; petiole 2-5 mm, thin, glabrescent;

Bark, twigs and

twigs slender, minutely striped, covered with a loose, stellate tomentum; aging hairless, greyish;
Hardiness zone, habitat not hardy; prefers rocky soils;

-- Sub-genus Cerris, Section Ilex;
-- Threatened (IUCN Red List Category : EN).

Subspecies and