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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)
"Oaks: the Backbone of Mexico" – New Documentary Film
A new documentary by Maricela Rodríguez Acosta
Website Editor | Feb 17, 2026
Quercus miyagii acorn and dried leaves
In Search of Quercus miyagii: A Field Report from Okinawa
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
Amit Zohran's "Oakollective"
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
Species Spotlight: Quercus canariensis Willd.
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa
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Triennial Conferences

2022 – New Mexico State University, Las Cruces, New Mexico, USA (Chair: Ryan Russell)

Proceedings

Session Recordings

IOS Las Cruces 2022

 

2018 – The University of California, Davis, California, USA (Chair: Emily Griswold)

Proceedings

Group photo Davis

2015 – The Morton Arboretum, Illinois, USA (Chair: Andrew Hipp) 

Proceedings

Group photo Lisle 2015

2012 – INRA and Université de Bordeaux I, Bordeaux, France (Chair: Thierry Lamant)

Proceedings

 

2009 – Benemérita Universidad Autónoma de Puebla, Puebla, Mexico (Chair: Maricela Rodriguez Acosta)

Proceedings

IOS Puebla 2006

 

2006 – Texas A&M University, Texas, USA (Chair: David Richardson)

Proceedings

IOS Dallas 2006

 

2003 – King Alfred College, Hampshire, England (Chair: Allen Coombes)

Proceedings

IOS UK 2003

 

2000 – The North Carolina Arboretum, North Carolina, USA (Chair: Ron Lance)

Proceedings

IOS Ashville 2000

 

1997 – The Huntington Botanical Garden, California, USA (Chair: Amy Larson)

Proceedings

IOS Huntington 1997

 

1994 – The Morton Arboretum, Illinois, USA (Chair: Guy Sternberg) 

Proceedings

IOS 1994 Lisle

 

 

Images © Guy Sternberg