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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)
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

IOS Webinar #12: Flower Development and Diversity in Quercus, and Improved Methods for Rooting Cuttings of Evergreen Oaks

Event Date: 
Thursday, 28 May 2026

Event date: 
Thursday, 28 May 2026

The IOS is pleased to announce our next virtual event, again co-hosted with the Global Conservation Consortium for Oak (GCCO), which will take place over Zoom at 10 am US Central Time on May 28, 2026

In this webinar, we will first hear from Hugo Afonso, PhD Student at the Centre of Molecular and Environmental Biology (CBMA), University of Minho, Portugal, and Biopolis/CIBIO-InBIO. His presentation will summarize recent advances in understanding the molecular processes that regulate the reproductive phenology of Quercus, highlighting the role of floral separation and diversification in shifting pollination dynamics and reproductive fitness. 
 

Quercus flowers
Quercus orocantabrica in bloom

© Hugo Alfonso

During the second part of the webinar, Greg Tyler, calculus teacher at Central Catholic High School, Portland, Oregon, USA, will discuss protocols he has developed for rooting cuttings of evergreen oaks. Following the presentations, there will be Q&A.

A cutting of Q. brandegeei
A cutting of Quercus brandegeei rooted under artificial light, a misting system, application of a systemic fungicide, and high concentration IBA

© Greg Tyler

The event is open to all. Please register here.

Once registered, you will receive a confirmation email with the Zoom link and an invite you can add to your calendar. 

We look forward to seeing you there!

 

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