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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.

Hybrid Highlight: Quercus ×comptoniae Sarg.

By Roderick Cameron | June 16, 2021
The Compton oak at Colonial Williamsburg

A natural hybrid between Quercus lyrata (overcup oak) and Q. virginiana (Southern live oak)

Cultivar Close-Up: Quercus ‘New Madrid’, Sorting Out the Confusion

By Ryan Russell | February 9, 2021
Quercus texana New Madrid acorn

Disentangling the cultivar published as Quercus texana ‘New Madrid’

Species Spotlight: Quercus skinneri Benth.

By Francisco Garin... | December 6, 2020
Quercus skinneri

Quercus skinneri is a Central American oak, distinguished by the large size of its fruit.

Species Spotlight: Quercus lyrata Walter

By Matt Candeias | October 6, 2020
i-wmz3wkv-xl.jpg

A guest post by Matt Candeias, host of the In Defense of Plants podcast and blog

Cultivar Close-Up: Bokrijk Cultivars

By Roderick Cameron | August 14, 2020
quercus_x_haynaldiana_bokrijk.jpg

Six oak cultivars originally described by Jef Van Meulder in 2014.

Pages

Editor's Picks

Past IOS President Allen Coombes, Curator of Scientific Collections at Puebla University Botanic Garden, discusses leaf variability in Quercus ceirpes (still image from the documentary)
"Oaks: the Backbone of Mexico" – New Documentary Film
A new documentary by Maricela Rodríguez Acosta
Website Editor | Feb 17, 2026
Quercus miyagii acorn and dried leaves
In Search of Quercus miyagii: A Field Report from Okinawa
A rare oak endemic to the Ryukyu Islands of Japan
Elion Jam | Feb 16, 2026
A moss-covered oak (Quercus orocantabrica) in Mata de Albergaria, Peneda-Gerês National Park, Portugal © Amit Zoran
Amit Zohran's "Oakollective"
Steve Potter reviews a new book that features oaks
Steve Potter | Feb 11, 2026

Plant Focus

Quercus canariensis in Cornwall Park, Epsom, Auckland, New Zealand, the champion specimen in New Zealand, planted in the 1920s, 27.2 m tall with a trunk diameter of 209 cm (G. Collett pers. comm. 2026) © Gerald Collett
Species Spotlight: Quercus canariensis Willd.
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa
Read more

Plant Focus

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.

Hybrid Highlight: Quercus ×comptoniae Sarg.

By Roderick Cameron | June 16, 2021
The Compton oak at Colonial Williamsburg

A natural hybrid between Quercus lyrata (overcup oak) and Q. virginiana (Southern live oak)

Cultivar Close-Up: Quercus ‘New Madrid’, Sorting Out the Confusion

By Ryan Russell | February 9, 2021
Quercus texana New Madrid acorn

Disentangling the cultivar published as Quercus texana ‘New Madrid’

Species Spotlight: Quercus skinneri Benth.

By Francisco Garin... | December 6, 2020
Quercus skinneri

Quercus skinneri is a Central American oak, distinguished by the large size of its fruit.

Species Spotlight: Quercus lyrata Walter

By Matt Candeias | October 6, 2020
i-wmz3wkv-xl.jpg

A guest post by Matt Candeias, host of the In Defense of Plants podcast and blog

Cultivar Close-Up: Bokrijk Cultivars

By Roderick Cameron | August 14, 2020
quercus_x_haynaldiana_bokrijk.jpg

Six oak cultivars originally described by Jef Van Meulder in 2014.

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
South Carolina Botanical Garden

 

The Huntington
The John Fairey Garden