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Editor's Picks

Phylogenetic tree
IOS members Paul Manos (Duke University) and Andrew Hipp (...
Andrew Hipp | Jun 16, 2021
Despite damage, the Lyytikkylä Oak is still the thickest...
Juha Fagerholm | Jun 10, 2021
Quercus cerris champion tree in spring 2016. Photo from Šušić et al. (2016)
In Serbian tradition, in almost every village or hamlet...
Nikola Šušić | Jun 10, 2021

Plant Focus

The Compton oak at Colonial Williamsburg
A natural hybrid between Quercus lyrata (overcup oak) and Q. virginiana (Southern live oak)

An Updated Infrageneric Classification of the North American Oaks

IOS members Paul Manos (Duke University) and Andrew Hipp (The Morton Arboretum) have just published a subsectional classification of North American Red and White Oaks. The paper, open-access in the journal Forests, uses the phylogenetic work that Hipp, Manos, and their many collaborators have published over the past several years to identify nine clades within the White and Red Oaks that warrant recognition at the subsectional level. The paper names formal subsections and provides descriptions and ecological/taxonomic commentary, including implications of ongoing phylogenetic work. You can download the PDF here.

Phylogenetic tree