03
May
2009
Quercus pubescens
Trees and shrubs | Magnoliopsida
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Scientific name - Quercus pubescens

Synonyms - apennina Quercus, Quercus brachyphylla Kotschy, Olivier infectoria Quercus, Quercus lanuginosa Thuill, Quercus virgiliana Ten.

Popular names - pubescent oak, bush toad, down Oak, Chen pubescent, roverella, Quercia pubescent.

Distribution and Habitat - natural habitat in Southern Europe, Asia Minor, the Mediterranean basin, grows in warm and dry from the hills and mountains up to 1200 m altitude.

Description - deciduous tree, native (Romania), 15 m high. The stem is often crooked, irregular. Crown rare, bright, large and irregular. Bark is thick, deeply wrinkled, forming a cracked ritidom in rectangular plates, dark brown. Leaves alternate, leather, 5-10 x 3.6 cm, oblong-ovata, top round, the cables emarginate, petiole, sinuous lobate or pinnate to pinnate fidate sides, 3-6 pairs of lobes, at first tomentoase on both sides, later glabrata on the upper face. Flowers unisexuat single, female flowers are grouped each 2-4, perianth with 3 3 elements gineceu sincarp, below. Blooming in May. Fruits are acorns Sesi or short pedunculate, with narrow achenes ovoid, acuminata and small cup of 0.8 to 1.5 cm high, small flakes ovat-lanceolata, tightly nested, flat or slightly curved, gray, pubescent.

Quercus pubescens subsp. Anatolia - originating in southwest Asia, southeast Europe;

Quercus pubescens subsp. palensis - originating in northern Spain.

  Quercus pubescens subsp. pubescens - originating in central and southern Europe;

Longevity - 200 years.

Tolerances - drought and frost.

Requirements - species rustic, thermophilic, preferring calcareous soils, well drained, with exhibitions sunny.

Propagation - by seed under greenhouse or shelter immediately after maturation.

Diseases and pests - Tortrix viridana, defolierea produce larvae, Lymantria disappear; Thaumetopoea processionaea, causing reduced production of acorns; Malacosoma neustriae, larvae feed on foliar parenchyma; Cerambix cerdo, adults feed on linfa, larvae dig galleries in the stem. Microsphaera alphitoides, covering the leaf surface with a white cloth, after which the leaves are dried.

Natural partners and Garden -- Abies alba, Acer monspessulanum, Betula sp., Carpinus orientalis, Erica sp., Fagus sylvatica, Ilex aquifolium, Juglans regia, Platanus orientalis, Quercus ilex, Vitex agnus-castus.

Properties and Uses - species of interest in forestry, wood grade, is to be used for firewood.

Bark contains tannin used in leather tabacitul.

It can be used as the tree line, in parks.

References

Gabriele Carraro - Observed Changes in Vegetation in Relation to Climate Warming - Verlag der Fachvereine Hochschulverlag, 1998

Maria Shahgedanova - The Physical Geography of Northern Eurasia - OUP Oxford, 2003

Thomas Laslett - Timber and Forestry - Native and Foreign Trees - Home Farm Books, 2008

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