Quercus Turneri Pseudoturneri (Turner's Oak)

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Quercus turneri Pseudoturneri Turner’s oak The Quercus turneri Pseudoturneri was produced artificially at Turner’s Nursery, Essex by Spencer Turner in the 18th Century. The specimen is a cross between Quercus ilex (Holm Oak) and Quercus robur (Common Oak). Turner’s Oak is a semi evergreen tree with distinct smooth, dark green leaves. It slowly develops into a broad headed medium sized tree with an abundance of yellow / green catkins in the Spring. Clusters of narrow 2cm long acorns to follow. Due to it’s rarity it has become a collectors’ item for specialist arboretums. Quercus turneri Pseudoturneri fruit Plant Profile Name: Quercus turneri Pseudoturneri Common Name: Turner’s Oak Family: Fagaceae Height: 18 to 20 metres Width: 8 to 10 metres Demands: Full sun to partial shade in any aspect Soil: Moist but well drained loam, clay, or sand Foliage: Semi evergreen Flowers: Yellow & green catkins followed by clusters of narrow 2cm long acorns Quercus turneri Pseudoturneri 40-45cm CG Deepdale Trees Ltd., Tithe Farm, Hatley Road, Potton, Sandy, Beds. SG19 2DX. Tel: 01767 26 26 36 www.deepdale-trees.co.uk Quercus turneri Pseudoturneri Turner’s oak The first Quercus turneri Pseudoturneri was planted in 1798 at Kew Gardens. After the great storm of 1987, it was partially uprooted by the winds but now is supported by metal struts. The tree has low-lying twisted branches which are great for tree-climbing children. Quercus turneri Pseudoturneri 4-4.5m feathered Quercus turneri Pseudoturneri 18-20cm CG Quercus turneri Pseudoturneri 4-5m Deepdale Trees Ltd., Tithe Farm, Hatley Road, Potton, Sandy, Beds. SG19 2DX. Tel: 01767 26 26 36 www.deepdale-trees.co.uk.

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Quercus Robur (Fagaceae)
Quercus robur (Fagaceae) The map description EEBIO area The integrated map shows the distribution and changes in the areal’s boundaries of pedunculate oak (Quercus robur). Q. robur is the dominant forest- formative species in the belt of broadleaf and mixed 4 needleleaf-broadleaf forests in the plains of the European part of the former USSR (Sokolov et al. 1977). In the northern part of its areal Q. robur grows in river valleys. In the central part, it forms mixed forests with Picea abies; closer to the south – a belt of broadleaf forests where Q. robur dominates. At the areal’s south boundary it forms small (marginal) forests in ravines and flood-plains (Atlas of Areals and Resources… , 1976). Q. robur belongs to the thermophilic species. The low temperature bound of possible occurrence of oak forests is marked by an average annual of 2?C l (http://www.forest.ru – in Russian). Therefore, l l l l l l hypotretically, oak areal boundaries will shift along l ll l l l l l l l with the changes in the average annual temperature. l l l l l l l l l l l For Yearly map of averaged mean annual air l l l l l l l l l l l l l l l l l l lll temperature (Afonin A., Lipiyaynen K., Tsepelev V., l l l l l l l ll ll l l l 2005) see http://www.agroatlas.spb.ru Climate. l l l l l l l l l l l l l l l l Oak forests are of great importance for the water l l l l l ll l lll l l l l l l l l l l l l l l l l l l l regime and soil structure, especially on the steep l l l l l l l l l l l l l l l l l l l l l l l l l l l l l slopes of river valleys and in forest-poor areas.
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