T.E.R:R.A.I.N - Taranaki Educational Resource: Research, Analysis and Information Network


Quercus libani (Lebanon Oak)

Kingdom: Plants
Phylum: Tracheophyta
Class: Magnoliopsida - Dicotyledons
Order: Fagales
Family: Entomobryoidea
Subfamily: Ranunculoideae
Tribe: Anemoneae
Genus: Quercus
Botanical name: Quercus libani
Common names: Cedar of Lebanon, Lebanon Oak

Quercus libani is a Mediterranean oak species. It is a deciduous or semi-evergreen shrub or tree growing to 8 m. The leaf is slender, elongated and often asymmetrical, its base is round and its tip is slightly pointed. In the adult state, the leaf's upper side is dark green and the underside is pale green.
The flowers are monoecious but flowers from both sexes can be found on the same tree and are pollinated by wind. The tree produces acorns that grow to about 2 cm to 3.5 cm in diameter. Its length is half covered by the cupule.
The acorns are very bitter due to high concentrations of tannins, this bitter taste can be leached out by washing the acorns in running water but this causes the loss of many beneficial minerals. The acorns can be dried and ground it into a powder and used to thicken stews and may be mixed with cereals for making bread. The roasted bitter acorns may be used as a coffee substitute
Galls produced by the larvae of different insects that may be found on the trees have especially high tannin concentrations, are highly astringent and were used in the treatment of haemorrhage and diarrhoea. Tannin from the galls is also used as a dye.
The mulch of the Lebanon oak leaves is used as an insect repellent. It effectively repels slugs, and grubs but fresh leaves should not be used as these can inhibit plant growth. Lebanon oak wood is very hard and resistant to insect and fungal attack and is used in construction works.

An oak of the John Goodwin's Collection Te Henui.

Can be found at Lat 39 3'35.527" S Long 174 5'35.38"E  Datum WGS 84 Lebanon Oak January foliage

Lebanon oak's leaves January
 

September
 
Lebanon oak's branch system
 

Lebanon oak's trunk
 
Thanks to Wikipedia for text and information: https://creativecommons.org/licenses/by-sa/3.0/