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Editor's Picks

Quercus sp. Ardnamurchan Peninsula
Oaks in Scotland: An Unresolved Question?
Is Q. robur invading Q. petraea populations or is it the...
Steve Potter | Apr 17, 2025
Acorn of Quercus carduchorum
Species Spotlight: Quercus carduchorum K.Koch
A rare species from the Zagros forests in Iran
Website Editor | Apr 17, 2025
Compton Oak in 2023
The Origin, Locations, and Date of Planting of Colonial Williamsburg’s Compton Oak
The landmark oak was found as a naturally occurring hybrid
Ricklin Brown | Apr 05, 2025

Plant Focus

Quercus kotschyana fruit and leaves in Jaj cedars nature reserve
Species Spotlight: Quercus kotschyana O.Schwarz
A rare oak endemic to Lebanon.
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UK Champion Quercus ×andegavensis

By Charles Snyers ... | May 17, 2014

Last Monday, I visited Roath Park in Cardiff, Wales with IOS member Tony Titchen and a small group of members of the International Dendrology Society (some of them also members of the IOS).  The first sizable tree we came across was the UK champion Quercus ×andegavensis.  Quercus ×andegavensis Hy is a hybrid between Q. pyrenaica and Q. robur (See our oaknames database).  The tree was measured in 2004.  It had a height of 24 meters and a diameter of 121 centimeters. 

Quercus ×andegavensis Hy (1895)