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    Louisiana Live Oaks

    A new book by IOS member Bill Guion is an homage to Louisiana’s historic live oaks and an appeal for their recognition and protection as a cultural, historic, and ecological treasure for Louisiana

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    Cloning Old Oaks in Poland

    Scientists in Poland have successfully micropropagated 500- to 800-year-old oaks and two of the cloned seedlings were planted in April 2019

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Editor's Picks

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Stelian Radu, a founding member of the IOS, accomplished an...
Website Editor | Jun 16, 2019
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Scientists in Poland have successfully micropropagated 500...
Website Editor | May 30, 2019
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Five-minute, fifteen-slide Lighting Talks were included for...
Website Editor | May 01, 2019

Plant Focus

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Quercus look is one of the least-known oaks of the arid mountains of the Middle East. It grows on Mount Hermon and in the Anti-Lebanon...

Latest Articles

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Originally described as a species, Quercus ×dysophylla is now considered to be of hybrid origin.
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For over thirty years Bill Guion has pursued and photographed the live oaks of Louisiana.
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Posters were presented during the lunch break of the first day of the Conference at UC Davis, California.

Latest Blog Posts

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Guy Sternberg shares his photographs of the California Pre- and Post-Conference Tours.
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A volunteer seedling in Massey University campus in New Zealand turns out to be a rare Mexican oak.
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An exchange of emails in April this year discussed the origin of the champion specimen of Quercus look in the US.
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Diana Gardener has again forwarded some interesting news items related to oaks and their connection to the manufacture of wines and spirits.
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In November 2018 I had a long layover in Bogotá and had enough time for a quick visit to Parque Natural Chicaque, about an hour’s drive from the airport.

Upcoming Events

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Centenary celebrations related to the First World War (1914-1918) will be taking place throughout the 2014-2018 period, but 2015 will likely see the most important celebration in Australia and New...
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A Pleistocene Clone of Palmer's Oak Persisting in Southern California The distribution of Palmer's oak (Quercus palmeri Engelm.) includes numerous isolated populations that are presumably relicts...
For upwards of twenty years I have been planting oaks at the Arboretum de la Bergerette in southwest France, during which time at least 200 species of oak have already been trialed outdoors, and...
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During this early autumn week of incomparable weather, twelve members of the IOS, and three others who were guests, enjoyed a truly memorable time in northern Greece.  There were 13 men and two women...
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Quercus pubescens Willd. is a species with a wide native range, found across the European continent, from Portugal to Lebanon and from Russia into Southern Germany. This oak takes its name from the...
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