Dendrology

Truffle-oaks in Argentina

By Roderick Cameron | August 30, 2015

Where were most oaks planted in Argentina during the last three years? One might guess that it would be in one of the collections of the few quixotic quercophiles in that country, or perhaps a landscape designer with a preference for Quercus was responsible, or a particularly zealous specialist nursery.

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Unraveling the Mystery of Quercus ×introgressa P.M. Thomson

By Ryan Russell | May 30, 2015

This unusual hybrid was described by Paul Thomson in 1977 from a location in Lafayette County, Missouri.

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Project Acorn - Putting Florida Scrub Oaks Back Where They Belong

By Roderick Cameron | May 27, 2015

Damaged scrub oak habitat in central Florida is being restored—one acorn at a time.

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For Acorns, Size Matters—and So Does Shape

By Francisco Vázqu... | March 13, 2015

Quercus lamellosa - Photo: ©Shaun Haddock

The aim of this brief essay by Francisco Vázquez is to set out the more frequently encountered morphological variations in the genus Quercus and their possible causes and/or consequences within the niche or habitat occupied by the individual plants.

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Oak Red Listing Project

By Murphy Westwood | March 9, 2015

In collaboration with BGCI and the IUCN/SSC Global Tree Specialist Group, The Morton Arboretum has launched a project to complete threat assessments for all of the world’s oak species for the IUCN Red List.

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European Tree of the Year 2015: A Stadium-bound Estonian Oak

By Roderick Cameron | March 9, 2015

Orisaree Oak at night - Photo: ©Kalmer Saar

An Estonian oak that stands in the middle of a sports stadium has won the European Tree of the Year contest.

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Quercus georgiana Conservation Genetics Project

By Murphy Westwood | March 9, 2015

Scientists from The Morton Arboretum and Chicago Botanic Garden are conducting a conservation genetics project to compare levels of genetic diversity between ex situ collections and individuals sampled from remaining wild populations of Quercus georgiana.

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The Gallipoli Oaks Project

By Roderick Cameron | March 8, 2015

Gallipoli oaks are being planted to commemorate First World War Centenary.

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Vegetative Propagation of Oaks in Iturraran

By Website Editor | March 8, 2015

Seeking alternatives for adding rare oaks to collections.

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Valonia Oak Restoration Project, Castlemaine, Victoria

By Roderick Cameron | December 3, 2014

A restoration project that will be of interest to IOS members is taking place in the Australian state of Victoria. A plantation of valonia oak (Quercus ithaburensis subsp. macrolepis) at Castlemaine, Victoria, dating to the late 19^th century, has suffered deterioration due to a decade of drought, and only three of the original 14 trees are still alive. Acorns are being collected from the surviving trees with a view to producing new trees to replant and restore the historic stand.