- Hungarian Oak
Taxobox
name = Hungarian Oak
image_width = 240px
regnum =Plant ae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo =Fagales
familia =Fagaceae
genus = "Quercus"
sectio = "Mesobalanus"
species = "Q. frainetto"
binomial = "Quercus frainetto"
binomial_authority = Ten.The Hungarian Oak or Italian Oak ("Quercus frainetto";
syn. "Quercus conferta" Kit., "Quercus farnetto" Ten.) is a species ofoak , native to southeasternEurope (parts ofItaly , theBalkans , parts ofHungary ,Romania ) andTurkey ; it is classified in "Quercus" sect. "Mesobalanus".It is a large
deciduous tree , reaching heights of 38 m and a trunk diameter of nearly 2 m. The leaves are large, 14-25 cm long (occasionally up to 33 cm), variable in shape, divided into 6-10 very deep parallel lobes which are usually divided into sublobes. The leaf stalks are usually short, 2-6 mm (rarely to 22 mm) long. The leaves are widest close to the apex, which is broad and short pointed. The base of the leaf usually hasauricle s which sometimes overlap the twig. The light yellow green expanding leaves turn rich dark green by the beginning of summer. The leaves are covered with minute russet hairs, especially the lower surface. The leaves are concentrated at the ends of twigs. The leaves turn brown, russet or yellow in fall and sometimes remain attached to the twigs until the following spring. The buds are large, long and pointed, shiny russet or light brown in colour with minute tomentum. The twigs are stout and covered with russet upward pointed hairs.The light brown
acorn s mature in about 6 months. They are 15-35 mm long, egg shaped, usually with a blunt apex. The acorn cup is covered with long overlapping scales and russet hairs. The acorns tend to concentrate in groups of two to eight at the ends of twigs.The centre of its native range is in the Balkans. It is adapted to the subcontinental climate of southeastern Europe but the main factor of its occurrence at a particular site is the soil. It is specially adapted to heavy acidic soils (
cambisols andvertisols ), typical of Serbia, Bulgaria and Romania. These soils are usually leached out, very dry in the summer and sometimes waterlogged in the spring. However, the Hungarian Oak does not tolerate flooding or high water tables. It is also extremely sensitive to the presence of lime in the soil. Hence, opposite to its English name, the Hungarian Oak is a very rare tree in Hungary, where the soils are generally very rich in lime. The Hungarian Oak-Turkey Oak forest ("Quercetum frainetto-cerris" Rud.) is the most widespread association of this oak in the Balkans, which is also the most common forest type in Serbia (see alsoBalkan mixed forests ).Cultivation
It is an outstanding ornamental tree for large
garden s.References
* Bean, W. J. (1976). "Trees and shrubs hardy in the British Isles" 8th ed., revised. John Murray.
* [http://rbg-web2.rbge.org.uk/cgi-bin/nph-readbtree.pl/feout?FAMILY_XREF=&GENUS_XREF=Quercus&SPECIES_XREF=frainetto&TAXON_NAME_XREF=&RANK= Flora Europaea: "Quercus frainetto"]
* [http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?400311 Germplasm Resources Information Network: "Quercus frainetto"]
* [http://www.pfaf.org/database/plants.php?Quercus+frainetto Plants For A Future: "Quercus frainetto"]
* Rushforth, K. (1999). "Trees of Britain and Europe". HarperCollins ISBN 0-00-220013-9.
* [http://jeanlouis.helardot.free.fr/page_chenes/quercus_frainetto.htm Chênes: "Quercus frainetto"]
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