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“Die Eichbäume” by Friedrich Hölderlin
A poem in which Hölderlin evokes the grandeur and solemn endurance of oaks as living symbols of nature’s strength and humanity’s search for...
Read more
Oak Poetry
By Website Editor
Apr 22, 2026
Taxonomists Huddle at Harvard
The Harvard University Herbaria hosted a novel Oak Taxonomy Workshop.
Read more
Group photo at Harvard Herbarium
Society News
By Jeannine Cavend...
Apr 21, 2026
Species Spotlight: Quercus orocantabrica Rivas Mart., Penas, T.E.Díaz &...
Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...
Read more
Quercus orocantabrica
Plant Focus
By Website Editor
Apr 18, 2026
Iberian Oaks and Climate Change: A Research Paper
Portuguese researchers have modelled the likely range response of three species to climate change.
Read more
Figure 8 from Pasos et al. (2026) showing turnover from Quercus pyrenaica’s current suitable area to Q. suber under two climate scenarios (SSP3-7.0 and SSP5-8.5) and two time frames (2041–2070 and 2071–2100)
Dendrology
By Steve Potter
Apr 16, 2026
State of the UK’s Oaks - A Report
The report brings together key information, monitors data, and reviews existing work, while identifying important evidence gaps.
Read more
Webinar cover
Dendrology
By Steve Potter
Apr 6, 2026
Argentine Oak Collections through Italian Eyes
Visits to three collections of Quercus in Buenos Aires Province
Read more
Morgan and friends in Argentina
Trip Reports
By Morgan Santini
Apr 5, 2026
In Memoriam: Michel Duhart (1923–2026)
On April 1st, the very day he turned 103, a great friend and an even better person, Michel Duhart, the oak enthusiast, passed away.
Read more
Michel Duhart and Paco Garin at Jardín Botánico Wilson, Costa Rica
Society News
By Francisco Garin...
Apr 5, 2026
"Oaks: the Backbone of Mexico" – New Documentary Film
A new documentary by Maricela Rodríguez Acosta
Read more
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)
Society News
By Website Editor
Feb 17, 2026
Oaks and Climate Change: A New Research Paper
IOS member Elif Deniz Ülker has co-authored a paper on the likely future range of six European oaks
Read more
Modeled distributions of temperate-zone species (Quercus robur and Q. petraea) under climatic conditions of the Last Glacial Maximum (~22,000 years before present), the Present, and future projections (2081-2100) under SSP1-2.6 and SSP5-8.5 scenarios.
Dendrology
By Editorial Staff
Feb 16, 2026
Species Spotlight: Quercus canariensis Willd.
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa
Read more
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
Plant Focus
By Antonio Lambe
Feb 16, 2026
In Search of Quercus miyagii: A Field Report from Okinawa
A rare oak endemic to the Ryukyu Islands of Japan
Read more
Quercus miyagii acorn and dried leaves
Trip Reports
By Elion Jam
Feb 16, 2026
Amit Zohran's "Oakollective"
Steve Potter reviews a new book that features oaks
Read more
A moss-covered oak (Quercus orocantabrica) in Mata de Albergaria, Peneda-Gerês National Park, Portugal © Amit Zoran
Book Reviews
By Steve Potter
Feb 11, 2026

Pages

Editor's Picks

Quercus coccifera, 97 cm dbh and 15 m canopy spread
Cyprus, April-May 2026 – Vacation Impressions
Images and insights from Ezra Barnea’s journey to Cyprus’s...
Ezra Barnea | Jun 13, 2026
Lainey Kirshberger and Ryan Silver, students at Oklahoma State University, participated in the fieldwork and will lead the genetic and epigenetic analysis under the supervision of Dr. Antonio R. Castilla.
Epigenetics as a Potential Mechanism of Rapid Response to Climate Change in the Endangered Oak Quercus hinckleyi
Endangered oak Quercus hinckleyi shows strong genetic...
Website Editor | Jun 09, 2026
The current Red List status and modelled outlook for the eight Californian oak species, plus tanoak
The Threat to California’s Oaks Is Greater than Had Been Anticipated
New paper should significantly change our approach to...
Steve Potter | Jun 09, 2026

Plant Focus

Quercus orocantabrica
Species Spotlight: Quercus orocantabrica Rivas Mart., Penas, T.E.Díaz & Llamas
Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...
Read more

All Articles

Book Reviews
Conversations with Conservationists
Dendrology
Gardens & Arboreta
Historic Oaks
Oak Artists
Oak Nomenclature
Oak Open Days
Oak Poetry
Plant Focus
Society News
Trip Reports
Webinar Reports
“Die Eichbäume” by Friedrich Hölderlin
A poem in which Hölderlin evokes the grandeur and solemn endurance of oaks as living symbols of nature’s strength and humanity’s search for...
Read more
Oak Poetry
By Website Editor
Apr 22, 2026
Taxonomists Huddle at Harvard
The Harvard University Herbaria hosted a novel Oak Taxonomy Workshop.
Read more
Group photo at Harvard Herbarium
Society News
By Jeannine Cavend...
Apr 21, 2026
Species Spotlight: Quercus orocantabrica Rivas Mart., Penas, T.E.Díaz &...
Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...
Read more
Quercus orocantabrica
Plant Focus
By Website Editor
Apr 18, 2026
Iberian Oaks and Climate Change: A Research Paper
Portuguese researchers have modelled the likely range response of three species to climate change.
Read more
Figure 8 from Pasos et al. (2026) showing turnover from Quercus pyrenaica’s current suitable area to Q. suber under two climate scenarios (SSP3-7.0 and SSP5-8.5) and two time frames (2041–2070 and 2071–2100)
Dendrology
By Steve Potter
Apr 16, 2026
State of the UK’s Oaks - A Report
The report brings together key information, monitors data, and reviews existing work, while identifying important evidence gaps.
Read more
Webinar cover
Dendrology
By Steve Potter
Apr 6, 2026
Argentine Oak Collections through Italian Eyes
Visits to three collections of Quercus in Buenos Aires Province
Read more
Morgan and friends in Argentina
Trip Reports
By Morgan Santini
Apr 5, 2026
In Memoriam: Michel Duhart (1923–2026)
On April 1st, the very day he turned 103, a great friend and an even better person, Michel Duhart, the oak enthusiast, passed away.
Read more
Michel Duhart and Paco Garin at Jardín Botánico Wilson, Costa Rica
Society News
By Francisco Garin...
Apr 5, 2026
"Oaks: the Backbone of Mexico" – New Documentary Film
A new documentary by Maricela Rodríguez Acosta
Read more
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)
Society News
By Website Editor
Feb 17, 2026
Oaks and Climate Change: A New Research Paper
IOS member Elif Deniz Ülker has co-authored a paper on the likely future range of six European oaks
Read more
Modeled distributions of temperate-zone species (Quercus robur and Q. petraea) under climatic conditions of the Last Glacial Maximum (~22,000 years before present), the Present, and future projections (2081-2100) under SSP1-2.6 and SSP5-8.5 scenarios.
Dendrology
By Editorial Staff
Feb 16, 2026
Species Spotlight: Quercus canariensis Willd.
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa
Read more
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
Plant Focus
By Antonio Lambe
Feb 16, 2026
In Search of Quercus miyagii: A Field Report from Okinawa
A rare oak endemic to the Ryukyu Islands of Japan
Read more
Quercus miyagii acorn and dried leaves
Trip Reports
By Elion Jam
Feb 16, 2026
Amit Zohran's "Oakollective"
Steve Potter reviews a new book that features oaks
Read more
A moss-covered oak (Quercus orocantabrica) in Mata de Albergaria, Peneda-Gerês National Park, Portugal © Amit Zoran
Book Reviews
By Steve Potter
Feb 11, 2026

Pages

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

Supporting Institutional Members

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San Antonio Botanical Garden logo

 

Standard Institutional Members

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Forrest Keeling Nursery logo
Houston Botanic Garden logo
Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden

 

The Huntington
The John Fairey Garden