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Editor's Picks

Carlos collecting Quercus ×alentejana (Q. faginea × Q. pyrenaica) in northeastern Portugal for his PhD thesis © Carlos Vila-Viçosa
An interview with Portuguese oak conservationist Dr. Carlos...
Amy Byrne | Apr 19, 2024
Roderick Cameron | Apr 13, 2024
Pages from Gert's book
It was a great pleasure for me to be able to write about my...
Gert Fortgens | Feb 15, 2024

Plant Focus

Quercus crassipes acorns with inrolled cupule margin
One of the more well-known Mexican oaks in cultivation.

New and Lesser-Known Oak Cultivars 2021-2022

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Individual articles can be purchased for U$S 10. If you would like to purchase an article, email a request to website@internationaloaksociety.org

Ryan Russell and Eike J. Jablonski

Published May 2023 in International Oaks No. 34: 29–38


The Registrars of the International Oak Society are responsible for registering, updating, and locating new selections of oaks throughout the world. The majority of these come from North America and Europe. New cultivars are selected for a variety of reasons, including fall color, unique foliage, habit, form, and fruiting characteristics. These cultivars come to us in many ways. Although some are sent to us by their originators through the registration link on the IOS website, most must be tracked down individually via the Internet, nursery catalogs, various publications, and data from collections. In many cases, this work requires traveling to gather information from breeders, nurserymen, or collection holders, and to collect the Standard Specimens. The Registrars welcome information about new cultivars or older cultivars that have not been registered yet. Please send information either to Eike Jablonski (Eurasia, Australasia, and Africa) or Ryan Russell (the Americas), or visit www.internationaloaksociety.org/content/cultivar-registration.

Our results show that the Fagaceae diversity of the forests in our study area is unique in Taiwan. We conclude that it is necessary to create a conservation area in order to protect these forests and appeal for the support of Fagaceae lovers worldwide.


ICRA, International Oak Society, Quercus cultivars


Blume, C.L. 1850. Museum Botanicum Lugduno-Batavo. No. 708 Quercus lacera. I: 306. Hobbs, K., and D. West. 2020. The Story of Trees. London: Laurence King Publishing.

ICNCP. 2016. International Code of Nomenclature for Cultivated Plants (9th edition). Scripta Horticulturae 18.

Kitamura, S. 1974. Short reports on Japanese Plants. Acta Phytotaxonomica et Geobotanica 26(1-2): 1-15.

Matsumura, J. 1891. Japanese Species of Quercus. Bot. Mag. (Tok.) 5(47):5-8, (48):54-57, (49):74-77, (50):121-124.

Olszanowski, M. 2016. Dąb czerwony ‘Roman Salamon’. Szkółkarstwo 5/2016: 10.