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An encounter in Taiwan with a genus in Fagaceae I had never heard of.
castnopsis_uraiana_inat2.jpeg
Posted Sat, 2023-04-15 11:44 in Roderick Cameron's blog
An article by Tim Boland and Matt Lobdell on why oaks are "ecological warhorses"
tag-jf22-cover-768x1013.jpg
Posted Wed, 2023-02-15 17:43 in Website Editor's blog
A proposal to conserve the name for Hungarian oak
Quercus frainetto
Posted Mon, 2023-02-13 16:11 in Roderick Cameron's blog
The Tree Conservation Biology lab at The Morton Arboretum contributed an article to the Kew Millennium Seed Bank Partnership newsletter, Samara.
img_7986.jpg
Posted Fri, 2023-02-10 21:38 in Sean Hoban's blog
IOS founding member and oak doyen Guy Sternberg was interviewed by Vanessa Ferguson for NPR Illinois.
tacoleaves-rr.jpg
Posted Thu, 2022-12-15 15:47 in Website Editor's blog
Many oaks have been planted as memorial trees near the Capitol
Quercus marilandica and the Capitol
Posted Wed, 2022-12-14 17:27 in Roderick Cameron's blog
An unusual shoot on a tree at the Puebla University Botanic Garden in Mexico.
Lobed leaf on Quercus rugosa
Posted Tue, 2022-10-18 11:05 in Allen Coombes's blog
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
unripe_acorns.jpeg
Posted Sun, 2022-10-16 10:49 in Tjeerd de Wit's blog
It turns out quite a number of countries have issued stamps featuring oaks...
stamp_collage.jpg
Posted Sat, 2022-06-11 19:17 in Roderick Cameron's blog
What to know about participating in the IOS Seed Exchange
Posted Sun, 2022-04-17 01:08 in Guy Sternberg's blog
At the 2012 IOS Conference at The Morton Arboretum, our first IOS silent auction was held.
ios_logo_square_for_website_25.jpg
Posted Sun, 2022-04-17 00:56 in Ryan Russell's blog

Pages

Editor's Picks

Quercus coccifera, 97 cm dbh and 15 m canopy spread
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.
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
New paper should significantly change our approach to...
Steve Potter | Jun 09, 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...

Blogs

An encounter in Taiwan with a genus in Fagaceae I had never heard of.
castnopsis_uraiana_inat2.jpeg
Posted Sat, 2023-04-15 11:44 in Roderick Cameron's blog
An article by Tim Boland and Matt Lobdell on why oaks are "ecological warhorses"
tag-jf22-cover-768x1013.jpg
Posted Wed, 2023-02-15 17:43 in Website Editor's blog
A proposal to conserve the name for Hungarian oak
Quercus frainetto
Posted Mon, 2023-02-13 16:11 in Roderick Cameron's blog
The Tree Conservation Biology lab at The Morton Arboretum contributed an article to the Kew Millennium Seed Bank Partnership newsletter, Samara.
img_7986.jpg
Posted Fri, 2023-02-10 21:38 in Sean Hoban's blog
IOS founding member and oak doyen Guy Sternberg was interviewed by Vanessa Ferguson for NPR Illinois.
tacoleaves-rr.jpg
Posted Thu, 2022-12-15 15:47 in Website Editor's blog
Many oaks have been planted as memorial trees near the Capitol
Quercus marilandica and the Capitol
Posted Wed, 2022-12-14 17:27 in Roderick Cameron's blog
An unusual shoot on a tree at the Puebla University Botanic Garden in Mexico.
Lobed leaf on Quercus rugosa
Posted Tue, 2022-10-18 11:05 in Allen Coombes's blog
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
unripe_acorns.jpeg
Posted Sun, 2022-10-16 10:49 in Tjeerd de Wit's blog
It turns out quite a number of countries have issued stamps featuring oaks...
stamp_collage.jpg
Posted Sat, 2022-06-11 19:17 in Roderick Cameron's blog
What to know about participating in the IOS Seed Exchange
Posted Sun, 2022-04-17 01:08 in Guy Sternberg's blog
At the 2012 IOS Conference at The Morton Arboretum, our first IOS silent auction was held.
ios_logo_square_for_website_25.jpg
Posted Sun, 2022-04-17 00:56 in Ryan Russell'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