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Editor's Picks

The oak tree in Skjomendalen © Gerhard Sørensen-Fuglem and Cecilia Piccirilli Bjerkeset
The World’s Northernmost Oak?
An oak grows north of the Arctic Circle in Norway
Website Editor | Aug 14, 2023
Unusual symptoms linked to phytoplasma infection in Quercus humboldtiii, Colombia © Eric Boa
Not Another Oak Calamity…
Symptoms linked to phytoplasma infection found in Quercus...
Website Editor | Aug 06, 2023
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Confusion on a Himalayan Scale: Naming Quercus leucotrichophora
Different names are being used for one species.
Website Editor | Jun 20, 2023

Plant Focus

A small but mature Alabama sandstone oak producing acorns © Patrick Thompson
Species Spotlight: Quercus boyntonii
A Critically Endangered dwarf oak 
Read more

Trip Reports

A Journey in Southeastern Taiwan Towards Conservation of Its Fagaceae Forests

By Amy Byrne | April 19, 2023
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Five IOS members were invited to participate in an International Conservation Symposium in Taiwan.

2022 Pre-Conference Tour: Western Texas

By Philip Crim | October 13, 2022
Group at salt flats near Guadalupe Mountains National Park

San Antonio to Las Cruces: oaks and more

2022 Pre-Conference Tour: New Mexico

By Mark Coggeshall | October 12, 2022
Group under Mangas Mountain Gambel oak

Oaks and other attractions, from Albuquerque to Las Cruces.

2022 Post-Conference Tour: Arizona

By Wally Wilkins | October 12, 2022
Group at Tortilla Flat

Four days with the oaks of Arizona

Scouting for Quercus welshii

By Cindy Newlander | July 31, 2022
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

By Roderick Cameron | December 16, 2018
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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.

2018 Pre-Conference Day Trips

By Website Editor | December 14, 2018
On Sunday, October 21, prior to the evening Opening Reception that kicked off the Conference, participants could choose one of three Day Trips to nearby destinations. Below are brief reports of these outings, kindly provided by members who participated in each one.

2018 Post-Conference Tour #2: Central Coast

By Charles Snyers | December 11, 2018
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The second leg of the Post-Conference Tour: from Santa Cruz to Los Angeles

2018 Pre-Conference Tour #2: North Coast

By Mark & Jolly Krautmann | December 10, 2018

Forty enthusiastic IOS members ventured from UC Davis through Sonoma wine country toward the north California coast. We visited sites of enormous habitat contrast that included many species of native oaks and the giant redwoods, unique in all the world.  

2018 Pre-Conference Tour #1: Sierra Nevada

By Dirk Giseburt | December 8, 2018
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Forty-one participants from nine countries gathered at Davis, California on October 15 for a four-day trek across the Sierra Nevada and back. Stunning was the diversity of landscapes we saw.

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