Oaks of the World

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  Quercus x szechenyana
Author Borbas 1886 Erdész. Lapok 25: 993
Synonyms frainetto x pubescens
= x braunii Borbas 1887
= x topaliae A.Camus 1939
= x vulcanica Borzi 1905
Local names
Range Turkey; Bosnia, Serbia, Greece, South Italy;
Growth habit 25-30 m
Leaves 9-17 x 5-10 cm; leaves recalling one parent or other; oboval; 4-7 pairs of parallel lobes, with secondary lobes; dark green above, usually hairless; paler beneath, with appressed, fasciate, stipitate hairs; petiole 0.8-3.5 cm, glabrescent;
Fruits acorn 1.5 cm long, sessil or on a very short peduncle ; cup halfround, tomentose, enclosing 1/3 to 1/2 of acorn; cup stalk short;

Bark, twigs and

young twigs tomentose first, becoming glabrous; large pubescent bud with ciliate scale margins; persistent stipules, 1.2 cm long;
Hardiness zone, habitat
Miscellaneous -- Different from Q. vulcanica Boiss. & Heldr. ex Kotschy 1860, which is a synonym of Q. petraea subsp. pinnatiloba (K.Koch) Menitsky 1972, though it is very similar...

-- Turkish Authors think it is a true species, in the Western Center of Turkey;

-- Differs from Q. frainetto, only in having longer petioles, and evenly distributed leaves on the twig (in Q. frainetto, the petiole is very short and the leaves are clustered at the end of the twig).

Subspecies and