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Species Spotlight: Quercus crassipes Bonpl.

By Roderick Cameron | April 22, 2024
Quercus crassipes acorns with inrolled cupule margin

One of the more well-known Mexican oaks in cultivation.

Species Spotlight: Quercus boyntonii

By Website Editor | August 11, 2023
A small but mature Alabama sandstone oak producing acorns © Patrick Thompson

A Critically Endangered dwarf oak 

Hybrid Highlight: Quercus ×jackiana C.K. Schneid.

By Ryan Russell | February 9, 2023
Quercus xjackiana acorns

The hybrid of Q. alba and Q. bicolor

Species Spotlight: Quercus macdougallii Martínez

By Nelly Pacheco Cruz | November 30, 2022
Quercus macdougallii

A rare oak endemic to the Sierra Juárez in Oaxaca

Species Spotlight: Quercus mohriana Buckley ex Rydb.

By Adam Black | April 16, 2022
Quercus mohriana

A shrub oak from the U.S. Southwest

Hybrid Highlight: the Langtry Oak

By Thierry Lamant | April 13, 2022
q.sp_._langtry_3.jpg

A section Lobatae oak found in southern Texas may be a distinct, undescribed species.

Species Spotlight: Quercus leucotrichophora A. Camus

By Meenakshi Negi | February 12, 2022
figure_2.jpg

The decline in regeneration potential of Quercus leucotrichophora is of great concern in the Kumaun Himalayan region.

 

Species Spotlight: Quercus costaricensis Liebm.

By Francisco Garin... | November 25, 2021
Quercus costaricensis leaves

Quercus costaricensis is a Central American oak belonging to the subgenus Quercus, section Lobatae.

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Editor's Picks

Group photo at Tregrehan
UK Oak Open Days 2025: Caerhays and Tregrehan
Visits to two gardens with collections of oaks and other...
Stephen Wood | Oct 27, 2025
Special Service Award plaque
IOS Service Awards Presented at the 11th IOS Conference
Plaques presented during the Gala Dinner in Oaxaca
Roderick Cameron | Oct 26, 2025
Group photo at Oaxaca Conference
The 11th IOS Oak Conference in Oaxaca
140 participants from 20 countries attended the Triennial...
Nikola Šušić | Oct 25, 2025

Plant Focus

Quercus vulcanica acorn and leaves
Species Spotlight: Quercus vulcanica Boiss. & Heldr. ex Kotschy
An oak endemic to Turkey
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Plant Focus

Species Spotlight: Quercus crassipes Bonpl.

By Roderick Cameron | April 22, 2024
Quercus crassipes acorns with inrolled cupule margin

One of the more well-known Mexican oaks in cultivation.

Species Spotlight: Quercus boyntonii

By Website Editor | August 11, 2023
A small but mature Alabama sandstone oak producing acorns © Patrick Thompson

A Critically Endangered dwarf oak 

Hybrid Highlight: Quercus ×jackiana C.K. Schneid.

By Ryan Russell | February 9, 2023
Quercus xjackiana acorns

The hybrid of Q. alba and Q. bicolor

Species Spotlight: Quercus macdougallii Martínez

By Nelly Pacheco Cruz | November 30, 2022
Quercus macdougallii

A rare oak endemic to the Sierra Juárez in Oaxaca

Species Spotlight: Quercus mohriana Buckley ex Rydb.

By Adam Black | April 16, 2022
Quercus mohriana

A shrub oak from the U.S. Southwest

Hybrid Highlight: the Langtry Oak

By Thierry Lamant | April 13, 2022
q.sp_._langtry_3.jpg

A section Lobatae oak found in southern Texas may be a distinct, undescribed species.

Species Spotlight: Quercus leucotrichophora A. Camus

By Meenakshi Negi | February 12, 2022
figure_2.jpg

The decline in regeneration potential of Quercus leucotrichophora is of great concern in the Kumaun Himalayan region.

 

Species Spotlight: Quercus costaricensis Liebm.

By Francisco Garin... | November 25, 2021
Quercus costaricensis leaves

Quercus costaricensis is a Central American oak belonging to the subgenus Quercus, section Lobatae.

Pages

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

Denver BG Logo
The Morton Arboretum logo
San Antonio Botanical Garden logo
 

Standard Institutional Members

Bartlett Tree Experts logo
Catalina Island Conservancy logo
Forrest Keeling Nursery logo
Houston Botanic Garden logo
 
Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
The Huntington
The John Fairey Garden