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Editor's Picks

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Who was Quercus grahamii named in honor of?
Roderick Cameron | Dec 17, 2024
Quercus rubra in autumn
The Tree of the Year Association in Germany selected a non-...
Website Editor | Dec 16, 2024
Image from Enarrationes
A 16th century commentary on the medicinal property of oaks...
Website Editor | Dec 16, 2024

Plant Focus

Quercus magnosquamata acorn
A  little-known species from the northern Zagros forests of Iran

Trip Reports

IOS Tour of the Carolinas

Group at the Angel Oak

A report on the Tour that took place in October

IOS Tour of California, Part 2: Southern California

IOS Tour of Oregon, September 2023

Tour Participants on Fiddler Peak

An account of the Tour guided by Sean Hogan

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Five IOS members were invited to participate in an International Conservation Symposium in Taiwan.

2022 Pre-Conference Tour: Western Texas

Group at salt flats near Guadalupe Mountains National Park

San Antonio to Las Cruces: oaks and more

2022 Pre-Conference Tour: New Mexico

Group under Mangas Mountain Gambel oak

Oaks and other attractions, from Albuquerque to Las Cruces.

2022 Post-Conference Tour: Arizona

Group at Tortilla Flat

Four days with the oaks of Arizona

Scouting for Quercus welshii

Quercus welshii on dunes site south of Kayenta, Ariz.

A threatened oak found in northern Arizona and southern Utah.

2018 Post-Conference Tour #1: San Francisco Bay Area

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Highlights of this tour included: University of California Botanical Garden at Berkeley, Long Ridge Open Space, Stanford oak woodland, and Apple Park.

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