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By Charles Snyers ... |
Nov 18, 2011

A visit to two Belgian collections on a rainy September day, Arboretum Wespelaar and the National Botanical Garden of Belgium. 

By Béatrice Chassé |
Jul 2, 2011

The Arboretum des Grandes Bruyères is without doubt one of the most extraordinary private botanic gardens in France.

By Anonymous |
Jul 2, 2011

An oak in cultivation as Quercus eugeniifolia has now been described as a new species,  Quercus delgadoana S. Valencia, Nixon & L. M. Kelly (Novon June 2011)

By Béatrice Chassé |
Jan 5, 2011

This trip report from Béatrice Chassé through Northern Mexico is reproduced from the IOS Journal.  The companion photo gallery contains much more photographs than the paper version. 

By Charles Snyers ... |
Dec 27, 2010
Quercus robur x dentata

A visit to the collections of Daniel Dumont, an Oak Open Day in Belgium.

By Allan Taylor |
Dec 14, 2010

A previously unreported station for Quercus sinuata var. breviloba has recently been identified in southwestern Custer County, Oklahoma. 

By Eike Jablonski |
Oct 20, 2010

Shaun Haddock invited the IOS membership on July 19, 2010 to an Oak Open Day at the Royal Botanic Gardens, Kew, near London. The aim was to focus on the Mexican oak species in their vast oak collection.

By IOS Site Admini... |
Jul 1, 2010

The distribution of Palmer's oak (Quercus palmeri Engelm.) includes numerous isolated populations that are presumably relicts of a formerly larger range that has contracted due to spreading aridity following the end of the Pleistocene.

By Guy Sternberg |
Dec 6, 2009

In 2008 one red oak hybrid (Quercus rubra × ellipsoidalis) was diagnosed with oak wilt disease (Ceratocystis fagacearum) at Starhill Forest Arboretum in Illinois. 

By Béatrice Chassé |
Aug 25, 2008

Many common native trees are just as beautiful as cultivated exotics. Since they have evolved with local conditions and are well adapted to their climate, they often require less maintenance and won't escape to invade a balanced ecosystem.

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