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Editor's Picks

Allan Taylor
A long-standing member of the IOS and fomer editor of Oak...
Panayoti Kelaidis | Dec 17, 2022
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A new study resolves many nomenclatural problems in the...
Carlos Vila-Viçosa | Dec 09, 2022
The team at SDZWA
Christy Powell of the San Diego Zoo Wildlife Alliance works...
Amy Byrne | Dec 06, 2022

Plant Focus

Quercus macdougallii
A rare oak endemic to the Sierra Juárez in Oaxaca

Allen Coombes's blog

Is Quercus rugosa Showing Its Roots?

Lobed leaf on Quercus rugosa

We know that some oaks, particularly Quercus robur, can produce forms with unusually cut leaves. Many of these have been documented in International Oaks and are listed at oaknames.org. We were very surprised, however, to find a very unusual shoot on a tree of Q. rugosa at the Puebla University Botanic Garden in Mexico.

Trees and Shrubs Online

Quercus depressa

I have recently been asked to write or update the oak entries for Trees and Shrubs Online. This is a project to create a truly modern reference to temperate trees and shrubs. Currently there are articles for some 730 genera and 4,500 species, with each species article describing subspecies, forms and cultivars.