Plant Focus

Cultivar Close-Up: Bokrijk Cultivars

By Roderick Cameron | August 14, 2020

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

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Species Spotlight: Quercus stenophylloides Hayata

By Joeri Strijk | June 8, 2020

Quercus stenophylloides is a medium-sized evergreen oak (15–18 m tall) restricted to central and northern Taiwan.

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Hybrid Highlight: Quercus ×vilmoriniana A.Camus

By Roderick Cameron | April 12, 2020

An intercontinental artificial hybrid raised at Arboretum national des Barres.

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Species Spotlight: Quercus hypophaea Hayata

By Joeri Strijk | April 9, 2020

First described by the Japanese botanist Bunzō Hayata in 1913, Quercus hypophaea is a medium to large evergreen oak restricted to the southeastern part of Taiwan.

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Species Spotlight: Quercus tarokoensis Hayata

By Joeri Strijk | February 10, 2020

Quercus tarokoensis (local name 太鲁阁栎 tai lu ge li, "oak of Taroko") is a fairly unknown oak species, restricted to eastern Taiwan.

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Cultivar Close-Up: Quercus 'Maya' and 'Zehra'

By Ryan Russell | February 10, 2020

There are a growing number of unique hybrid selections that feature Quercus rysophylla as one parent.

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Hybrid Highlight: Quercus ×ludoviciana Sarg.

By Roderick Cameron | December 15, 2019

Quercus ×ludoviciana is a naturally occurring oak hybrid from southeastern United States, which has flourished and attracted attention in collections worldwide. Over the years there has been some confusion regarding the hybrid’s parentage, but it is currently accepted to be a cross of Q. phellos (willow oak) and Q. pagoda (cherrybark oak).

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Cultivar Close-Up: Mighty Miniatures

By Ryan Russell | August 9, 2019

Dwarf cultivars can be ideal for a small garden. Here are three "mini oaks".

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Hybrid Highlight: Quercus ×dysophylla Benth.

By Roderick Cameron | June 12, 2019

Originally described as a species, Quercus ×dysophylla is now considered to be of hybrid origin.

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Species Spotlight: Quercus look Kotschy

By Ori Fragman-Sapir | June 1, 2019

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 Mountains and Lebanon Mountains.

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Editor's Picks

Taxonomists Huddle at Harvard

The Harvard University Herbaria hosted a novel Oak Taxonomy...

Jeannine Cavender-Bares | Apr 21, 2026

Argentine Oak Collections through Italian Eyes

Visits to three collections of Quercus in Buenos Aires...

Morgan Santini | Apr 05, 2026

Michel Duhart and Paco Garin at Jardín Botánico Wilson, Costa Rica

In Memoriam: Michel Duhart (1923–2026)

On April 1st, the very day he turned 103, a great friend...

Francisco Garin Garcia | Apr 05, 2026

Species Spotlight: Quercus orocantabrica Rivas Mart., Penas, T.E.Díaz & Llamas

Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...