Oaks of the World

General dataClassificationsList of speciesLocal namesBack to
home page

 Quercus stenophylloides
AuthorHayata 1914
Synonyms Cyclobalanopsis stenophylloides (Hayata) Kudo & Masamune 1930
Cyclobalanopsis stenophylla (Bl.) Schottky var. stenophylloides (Hayata)Liao 1974
salicina var stenophylloides (Hayata) S.S.Ying 1988
stenophylla var. stenophylloides (Hayata) A.Camus 1938
salicina var. asiatica Shen in Shen & Liu 1984
Local namestai wan zhai ye qing gang ;
Range Central and North Taiwan ; 1100-2600 m ;
Growth habitreaches 17 m;
Leaves 7-12 x 1.5-3.5 cm; leathery; oblong-elliptic to lanceolate; apex acuminate to caudate; base rounded or acute; margin with small awn-shaped teeth; glossy green above; farinose and with simple prostrate hairs beneath, but usually glabrescent; 11-13 vein pairs, prominent beneath, ending in the teeth; tertiary veins inconspicuous beneath; petiole hairless 1.5-2 cm long;
FlowersApril-May; pistillate inflorescences 2-2.5 cm long, bearing 6-7 cupules;
Fruits acorn 1.7-2 cm long, 1.5 cm wide, ellipsoid; hairless; enclosed 1/2 by cup; cup 1-1.5 cm long, 1.2 cm in diameter, thin (less than 1 mm), greyish velutinous inside and outside, with 6-8 concentric rings denticulate; scar flat, 5 mm wide; stylopodium persistent, large, with 3 rings; maturing in 2 years;

Bark, twigs and
buds

twigs thin, grey, hairless;
Hardiness zone, habitat hardy zone 8-9; evergreen broad-leaved forests, in mountains;
Miscellaneous -- Sub-genus Cyclobalanopsis;
-- Closely related to the Japanese
Q.salicina Bl. (= Cyclobalanopsis salicina (Bl.) Oerst.), said to be present in Taiwan, but plants of Taiwan occur at lower elevations (500 m) than what is typical for the species; they are probably populations of Q.stenophylloides.
Subspecies and
varieties
 
Pictures

drawing