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Editor's Picks

Allan Taylor
A long-standing member of the IOS and fomer editor of Oak...
Panayoti Kelaidis | Dec 17, 2022
A new study resolves many nomenclatural problems in the...
Carlos Vila-Viçosa | Dec 09, 2022
The team at SDZWA
Christy Powell of the San Diego Zoo Wildlife Alliance works...
Amy Byrne | Dec 06, 2022

Plant Focus

Quercus macdougallii
A rare oak endemic to the Sierra Juárez in Oaxaca

Latest Articles

A sonnet written by the English Romantic poet in support of the Spanish people during the Peninsular War
The 3rd IOS Silent Auction was another huge success
Quercus sontraensis
Quercus sontraensis grows in the Son Tra Peninsula

Latest Blog Posts

IOS founding member and oak doyen Guy Sternberg was interviewed by Vanessa Ferguson for NPR Illinois.
Quercus marilandica and the Capitol
Many oaks have been planted as memorial trees near the Capitol
Lobed leaf on Quercus rugosa
We know that some oaks, particularly Quercus robur, can produce forms with unusually cut leaves.
Being a lover of nature and photography, I often saunter around in a narrow mountain ridge in Pretoria, South Africa, with the purpose of getting some exercise, enjoying nature and photography, and

Upcoming Events

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Centenary celebrations related to the First World War (1914-1918) will be taking place throughout the 2014-2018 period, but 2015 will likely see the most important celebration in Australia and New...
Quercus lamellosa - Photo: ©Shaun Haddock
The fruits of Quercus are a source of energy that serves to generate new individuals, thanks to the energy content stored in the cotyledons. The cotyledons join forces with the embryo to generate new...
A Pleistocene Clone of Palmer's Oak Persisting in Southern California The distribution of Palmer's oak (Quercus palmeri Engelm.) includes numerous isolated populations that are presumably relicts...
For upwards of twenty years I have been planting oaks at the Arboretum de la Bergerette in southwest France, during which time at least 200 species of oak have already been trialed outdoors, and...
Michael Avishai with Q. pontica
Sometimes one encounters a single, isolated individual tree, thriving in a private collection as the only representative of its species. The proud owner admires and perhaps even pampers it. But...