Quercus acutissima
Known Hybrids (1)
Synonyms (7)
Geographic Range
Japan , North China , Korea, Himalaya, Cambodia, Myanmar, Vietnam, Thailand ; from 100 to 2200 m; introduced in Europe in 1862 ;
Growth Habit
2 to 15 m tall (reaches 30 m? with trunk to 1 m in diametre) ; pyramidal crown, becoming rounded and loose ;
Leaves
8-15 cm long, 4-6cm wide ; marcescent ; entire, margin with 10-20 pairs of short teeth, long bristle-tipped; lustrous green above, dull and paler beneath; few hairs on both surfaces; base rounded or coarsely cuneate; long pointed apex; 12-20pairs of parallel veins; 1 to 2 cm long, fluted petiole, rusty coloured in autumn.
Flowers
male flowers on yellowish, pendulous and 10-15 cm long catkins; appearing at the end of spring; female flowers inconspicuous.
Fruits
acorn 2.5 cm long, 1.5-2 cm in diameter, hidden in the long, curved, pubescent scales of the hemispherical cup; solitary or paired; subglobular, with depressed apex; enclosed for 1/2 in the 2 to 4 cm wide cup including long recurved scales; maturing in 2 years ;
Common Names
Hardiness & Habitat
prefers well drained and lime-free soils ; but very adaptable; hardy, but prefers moist and warm sites; fast growing when young;
Additional Information
– A. Camus : n° 132 ; – Sub-genus Cerris, Section Cerris, Sub-section Campylolepides (with chenii and variabilis ); – Rare ; – No cultivar ; no serious deseases; propagation by seeds; – The subspecies roxburghii (= Q.roxburghi i Endl.) described by Camus is in fact a species of the Castanopsis genus (= Castanopsis indica ) ;