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Oaks Behaving Strangely

obs6.jpg

Allen Coombes shares observations of unexpected phenology in oaks in the University of Puebla BG.

Seed Exchange Guidelines

What to know about participating in the IOS Seed Exchange

Acorn Onomastics

Quercus suber acorn

Spanish has many words related to acorns.

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...

Acorns

Oaks Behaving Strangely

obs6.jpg

Allen Coombes shares observations of unexpected phenology in oaks in the University of Puebla BG.

Seed Exchange Guidelines

What to know about participating in the IOS Seed Exchange

Acorn Onomastics

Quercus suber acorn

Spanish has many words related to acorns.

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