Oaks of the World

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  Quercus quangtriensis
Author Hickel & A.Camus 1926 Bull. Mus. Natl. Hist. Nat. 32: 400
Synonyms platycalyx Hickel & A.Camus 1921 Ann. Sci. Nat., Bot. X, 3: 380 (A. Camus : n° 2)
Local names
Range Vietnam; Thailand; to 700 m;
Growth habit 20-25 m; trunk to 1 m in diameter; 
Leaves 7-12 x 2-3 cm; thick, stiff; oblong; apex pointed acuminate; base cuneate; margin thick, toothed towards apical 2/3; glabrous on both sides; 8-11 pairs of secondary veins slightly raised underside, at an angle of 35-40° with midvein; petiole 1.5 cm long;
Flowers female flowers with 4 free styles;
Fruits acorn 2-3.5 cm long, 1.5-2 cm in diameter; sometimes asymmetrically mucronate, with convex basal scar; enclosed 1/4 by the stalkless cup; cup flat or nearly so, 2-2.8 cm in diameter; 8-9 concentric rings, grey, finely pubescent, remotely dentate; maturing first year;

Bark, twigs and

young shoot hairless; small bud;
Hardiness zone, habitat not hardy; tropical forests; prefers clay soil;
Miscellaneous -- Sub-genus Cerris, Section Cyclobalanopsis;
-- Section Semiserrata, sub-section Gemelliflorae (Menitsky).
-- A. Camus : tome 1, p. 291, n° 49;
-- Threatened (IUCN Red List Category : VU).
-- Since 2007, Q. platycalyx is considered by Govaerts as a true species, in Vietnam;

Subspecies and