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Editor's Picks

The oak tree in Skjomendalen © Gerhard Sørensen-Fuglem and Cecilia Piccirilli Bjerkeset
An oak grows north of the Arctic Circle in Norway
Website Editor | Aug 14, 2023
Unusual symptoms linked to phytoplasma infection in Quercus humboldtiii, Colombia © Eric Boa
Symptoms linked to phytoplasma infection found in Quercus...
Website Editor | Aug 06, 2023
Different names are being used for one species.
Website Editor | Jun 20, 2023

Plant Focus

A small but mature Alabama sandstone oak producing acorns © Patrick Thompson
A Critically Endangered dwarf oak 

Society News

Quercus marlipoensis

Eight conservation projects supported by the OC&R Fund

In Memoriam: Allan Taylor (1931–2022)

Allan Taylor

A long-standing member of the IOS and former editor of Oak News & Notes

An Outstanding Silent Auction at Las Cruces


The 3rd IOS Silent Auction was another huge success

Caps and T-shirts for Sale!

Thank You to the Conference Committee!

2022 tOAKen

Shout out to the 12 IOS members who organized the Conference and Tours

Shaun Haddock receives an award for Eike Jablonski

Service awards recognize contributions to genus Quercus and to the IOS

The 10th IOS Conference in Las Cruces, New Mexico

Group photo

The traditional triennial gathering took place in the shadows of the Organ Mountains.

Jeff Stevens (1958–2021)

Jeff Stevens

Jeff Stevens, 63, of Apison, Tennessee, USA passed away September 26, 2021.

Bill Hess (1934–2021)

Bill Hess - Courtesy of The Morton Arboretum

William "Bill" J. Hess, 87, of Crossville, Tennessee, USA passed away on June 11, 2021.

Remembering Piers Trehane

Piers Trehane

Last March marked the 10 years since the death of Piers Trehane. It seemed a good opportunity to remember him and his contribution to the IOS.