The stone oak (Quercus ilex) is an evergreen deciduous tree (therefore it also green oak) from the family beech plant within the kind of the oaks (Quercus) belongs this kind of the sub-group of the Zerreichen (Cerris), to also the cork oak belongs.

Spreading

The stone oak is domestic in the mediterranen climate zone (Italy, Portugal, Spain, Tunesien, Korsika, Kroatien). It is to some extent winter hard in Germany only in the allermildesten situations (for instance in the Rhine ditch and on Helgoland) and is rarely cultivated. On the British islands with exception of north Scotland it is winter hard and frequently in gardens and parks is planted there.

Description

The stone oak becomes high as a tree 5 to 20 meters, sometimes also up to 28 meters. It can reach an age of 200 to 500 years and a master diameter up to 1,4 m. The crown is broadly curved and often The crust tore up brownishly to black and into small plates flat. The evergreen sheets are with drove out (usually only taken place in June) silver-white, then pale-yellow and later dark-green. The sheets are at first everywhere, later only behaart on the lower surface. The sheets remind in the appearance of they are very variable in form and The sheets sit at a wollig behaarten 1 to 2 cm long handle and are about 5 to 10 cm long.

The bloom time is enough from April to May. Dusting takes place via insects. The acorns are lightgreen and scarcely 2 cm long; they are enclosed to the scarce half of the braunfilzigen cup. They are spread by animals as for instance squirrels. In Hainen (in Spain dehesas mentioned) cultivated the stone oak for the pig mast is economically important.

Sorts

• "“Angustifolia"” (also "“Fordii"”, "“Lanceolata"”): The sheets are 5 cm long and 1 cm narrowly; they rolled ganzrandig and something. In England frequently planted.
• "“Laurifolia"”: The sheets are 10 to 14 cm long and 3 to 5 cm broad; they are long lanzettlich with rolled up edge and shine strongly.
• "“Rotundifolia"”: With this form the sheets are nearly circular and 8 to 10 cm long; the acorn is larger with 3 to 4 cm than edible with the type and.

Reference

Entry in the ITIS data base (English)

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