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Many trees have been lost due to an intense storm on May 15
Catalpa destroyed by tornado
Posted Mon, 2025-05-26 19:46 in Guy Sternberg's blog
What to know about participating in the IOS Seed Exchange
Posted Sun, 2022-04-17 01:08 in Guy Sternberg's blog
Guy Sternberg shares his photographs of the California Pre- and Post-Conference Tours.
california_ios_2018-auto-web_slide_1.jpg
Posted Sun, 2019-06-16 18:44 in Guy Sternberg's blog
This past year we lost three of our prominent, longtime members.
Posted Fri, 2014-02-07 11:03 in Guy Sternberg's blog

Editor's Picks

Group photo at Harvard Herbarium
The Harvard University Herbaria hosted a novel Oak Taxonomy...
Jeannine Cavender-Bares | Apr 21, 2026
Morgan and friends in Argentina
Visits to three collections of Quercus in Buenos Aires...
Morgan Santini | Apr 05, 2026
Michel Duhart and Paco Garin at Jardín Botánico Wilson, Costa Rica
On April 1st, the very day he turned 103, a great friend...
Francisco Garin Garcia | Apr 05, 2026

Plant Focus

Quercus orocantabrica
Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...

GuySternberg's blog

Many trees have been lost due to an intense storm on May 15
Catalpa destroyed by tornado
Posted Mon, 2025-05-26 19:46 in Guy Sternberg's blog
What to know about participating in the IOS Seed Exchange
Posted Sun, 2022-04-17 01:08 in Guy Sternberg's blog
Guy Sternberg shares his photographs of the California Pre- and Post-Conference Tours.
california_ios_2018-auto-web_slide_1.jpg
Posted Sun, 2019-06-16 18:44 in Guy Sternberg's blog
This past year we lost three of our prominent, longtime members.
Posted Fri, 2014-02-07 11:03 in Guy Sternberg's blog

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

 

Standard Institutional Members

Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden

 

The Huntington
The John Fairey Garden