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The author Sennen crops up regularly among the Spanish oaks.
sennen_in_his_herbarium.jpg
Posted Sun, 2022-02-13 10:38 in Patrick Vereecke's blog
Spanish has many words related to acorns.
Quercus suber acorn
Posted Wed, 2021-12-01 22:02 in Roderick Cameron's blog
Using acorns to teach maths
Acorn-ulator Cover
Posted Thu, 2021-10-14 14:48 in Website Editor's blog
And a special prize would go to anyone who could identify the species from the photo!
1-jasonkirk_60x_oaktrichomestomata.jpg
Posted Wed, 2021-10-13 13:59 in Website Editor's blog
Video clips are a new feature in the database of Israeli oaks.
map.jpg
Posted Wed, 2021-10-13 11:13 in Ezra Barnea's blog
The authority cited for this taxon needs revision.
Quercus lobbii label
Posted Tue, 2021-10-12 18:41 in Roderick Cameron's blog
IOS members Paul Manos (Duke University) and Andrew Hipp (The Morton Arboretum) have just published a subsectional classification of North American Red and White Oaks
Phylogenetic tree
Posted Wed, 2021-06-16 12:40 in Andrew Hipp's blog
Mat Disney and his team study oaks using a terrestrial laser scanner
Queen Elizabeth Oak at Cowdray Park
Posted Sat, 2021-06-12 13:53 in Roderick Cameron's blog
Stories about oaks in the Netherlands
eik_ik.jpg
Posted Fri, 2021-06-11 17:02 in Website Editor's blog
"Ecocide" or eco-friendly?
Notre-Dame-de-Paris
Posted Sat, 2021-04-10 11:03 in Roderick Cameron's blog
Until recently, the name had been considered unplaced
obtecta_small_4.jpg
Posted Fri, 2021-03-26 11:07 in Patrick Vereecke's blog
A video clip by filmmaker Alon Issashar focuses on oak trees in Israel
screenshot_2021-02-20_101018.jpg
Posted Sat, 2021-02-20 13:09 in Ezra Barnea's blog

Pages

Editor's Picks

Past IOS President Allen Coombes, Curator of Scientific Collections at Puebla University Botanic Garden, discusses leaf variability in Quercus ceirpes (still image from the documentary)
A new documentary by Maricela Rodríguez Acosta
Website Editor | Feb 17, 2026
Quercus miyagii acorn and dried leaves
A rare oak endemic to the Ryukyu Islands of Japan
Elion Jam | Feb 16, 2026
A moss-covered oak (Quercus orocantabrica) in Mata de Albergaria, Peneda-Gerês National Park, Portugal  © Amit Zoran
Steve Potter reviews a new book that features oaks
Steve Potter | Feb 11, 2026

Plant Focus

Quercus canariensis in Cornwall Park, Epsom, Auckland, New Zealand, the champion specimen in New Zealand, planted in the 1920s, 27.2 m tall with a trunk diameter of 209 cm (G. Collett pers. comm. 2026)  © Gerald Collett
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa

Blogs

The author Sennen crops up regularly among the Spanish oaks.
sennen_in_his_herbarium.jpg
Posted Sun, 2022-02-13 10:38 in Patrick Vereecke's blog
Spanish has many words related to acorns.
Quercus suber acorn
Posted Wed, 2021-12-01 22:02 in Roderick Cameron's blog
Using acorns to teach maths
Acorn-ulator Cover
Posted Thu, 2021-10-14 14:48 in Website Editor's blog
And a special prize would go to anyone who could identify the species from the photo!
1-jasonkirk_60x_oaktrichomestomata.jpg
Posted Wed, 2021-10-13 13:59 in Website Editor's blog
Video clips are a new feature in the database of Israeli oaks.
map.jpg
Posted Wed, 2021-10-13 11:13 in Ezra Barnea's blog
The authority cited for this taxon needs revision.
Quercus lobbii label
Posted Tue, 2021-10-12 18:41 in Roderick Cameron's blog
IOS members Paul Manos (Duke University) and Andrew Hipp (The Morton Arboretum) have just published a subsectional classification of North American Red and White Oaks
Phylogenetic tree
Posted Wed, 2021-06-16 12:40 in Andrew Hipp's blog
Mat Disney and his team study oaks using a terrestrial laser scanner
Queen Elizabeth Oak at Cowdray Park
Posted Sat, 2021-06-12 13:53 in Roderick Cameron's blog
Stories about oaks in the Netherlands
eik_ik.jpg
Posted Fri, 2021-06-11 17:02 in Website Editor's blog
"Ecocide" or eco-friendly?
Notre-Dame-de-Paris
Posted Sat, 2021-04-10 11:03 in Roderick Cameron's blog
Until recently, the name had been considered unplaced
obtecta_small_4.jpg
Posted Fri, 2021-03-26 11:07 in Patrick Vereecke's blog
A video clip by filmmaker Alon Issashar focuses on oak trees in Israel
screenshot_2021-02-20_101018.jpg
Posted Sat, 2021-02-20 13:09 in Ezra Barnea's blog

Pages

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