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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

Jan 28, 2023 to Jan 29, 2023
IOS member Joan Monserrat has shared details of this event: