Species

Quercus albicaulis Chun & W.C.Ko

CR

Synonyms (1)

Cyclobalanopsis albicaulis (Chun & Ko)Y.C.Hsu & H.Wei Jen 1993
Data from Oaks of the World

Geographic Range

China (Hainan); 200-600 m ;

Growth Habit

reaches 30 m high;

Leaves

10-15 cm long, 3-6 cm wide; oblong-elliptic to oval or lanceolate, a little leathery, bloomy, base rounded or weakly cuneate, apex most often acuminate; margin entire or remotely toothed; midrib shallowly impressed above; 6-8 pairs of lateral veins; petiole glabrous 2-2.5 cm long;

Flowers

pistillate in October, on 2-3 cm long inflorescences;

Fruits

acorn oblong 4 cm long, 2-3 cm wide; glabrous; long-stalked cupule 2-3 cm in diameter, with 6-8 pale brown pubescent concentric rings, enclosing 1/3 or 1/2 of nut; scar round ; stylopodium persistent; maturing in 1 year (fruit in November-December of the year after anthesis that occurs in October);

Common Names

bai zhi qing gang

Additional Information

– Sub-genus Cerris, section Cyclobalanopsis; – Taxinomic position uncertain… – For Menitsky (1974) it is a synonym of Q.jenseniana – Threatened (IUCN Red List Category : CR).

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