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

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

UK Champion Quercus ×andegavensis

By Charles Snyers ... | May 17, 2014

Last Monday, I visited Roath Park in Cardiff, Wales with IOS member Tony Titchen and a small group of members of the International Dendrology Society (some of them also members of the IOS). The first sizable tree we came across was the UK champion Quercus ×andegavensis. Quercus ×andegavensis Hy is a hybrid between Q. pyrenaica and Q. robur (See our oaknames database). The tree was measured in 2004. It had a height of 24 meters and a diameter of 121 centimeters.