Open Science at the Maple Society

Botanic Gardens Conservation International, (BGCI) with the support of The Maple Society and the Open Science Initiative, presents The Red List of Acer: revised and extended, published 22 Spetember 2020. This most important of maple conservation documents gives the conservation status of 158 maple species. The report reveals that one if five of Acer species are at high risk of extinction in the near future.  Find our full treatment of this story here.

A lecture by Dr P. C. de Jong: The Evolution of the Reproductive Organs of Maples; Analyses of Morphology and Flowering in Light of the Phylogeny of the Genus.

This lecture, originally presented in 2014 at the International Maple Symposium at the Morris Arboretum, considers both the evolution of maple flowers and fruit and the often conflicting ramifications of molecular studies of Acer, following the author's seminal 2002 classification in Worldwide Maple Diversity (see below).

Taxonomy and phylogenetic insights for Mexican and Central American species of Acer (Sapindaceae). By Yalma L. Vargas-Rodriguez et al, University of Guadalajara. Copyright 2020 Torrey Botanical Society.

This study evaluates the morphological variation and updates the taxonomic status, distribution, and phylogenetic relationships of Acer in Middle America, the southernmost geographic range of the genus in the hemisphere.

Limitations and Possibilities for Growing Native and Exotic Maples in Poland. By Jerzy W. Tumilowicz, Warsaw Agricultural University, Rogów Arboretum.

This article, reintroduced from the 2002 International Maple Symposium Proceedings, will by of great use to all growing maples in the challenging colder climate zones.  Prof. Tumilowicz tracks hardiness for 74 Acer species growing at Rogów through severe January conditions, with an average temperature of -12.4°C (9.7°F) and a minimum of -31.3°C (-24.3°F).

Worldwide Maple Diversity, Piet C. de Jong, Ph.D., Von Gimborn Arboretum, Utrecht University, 2002 Worldwide Maple Diversity, 2002

Originally published in The Proceedings of The International Maple Symposium, 2002.  The Maple Society Open Science Initiative presents the first ever digital edition of this important and frequently referenced paper, which updated the the Acer classification presented by de Jong in Maples of the World in 1996, and remains pertinent today.

Acero dai piedi pelosi o Acero di Peter Gregory, tradotto da Alessandro Biagioli:  Acer capillipes

This is the Italian version of Peter's A. capillipes profile, for English version scroll further down the page.

Maples of Iturraran Botanical Garden: Acer section Hyptiocarpa W. P. Fang (1996)

Next in our multilingial series bringing you the maples of one of Europe's great Botanical Gardens, Iturraran.  By Francisco Garin, Former Director of Iturraran.  In English, French and Spanish!  En Anglais, Francais et Espagnole.  En Inglés, Español y Francés.

Opis klonu cienkoszypułkowego, Acer capillipes, autorstwa Peter’a Gregory’ego (Polski) Opis klonu: Acer capillipes

This is the Polish version of Peter's A. capillipes profile, for English version scroll further down the page.

Acero a foglie di Lime o Tiglio di Peter Gregory, tradotto da Alessandro Biagioli Acer distylum

This is the Italian version of Peter's A. distylum profile, for English, French and Polish versions scroll further on this page.

Maples of Iturraran Botanical Garden: Acer section Oblonga (Hu & W.C. Cheng) Delendick (1882)

Next in our multilingial series bringing you the maples of one of Europe's great Botanical Gardens, Iturraran.  By Francisco Garin, Former Director of Iturraran.  In English, French and Spanish!  En Anglais, Francais et Espagnole.  En Inglés, Español y Francés.

Opis klonu dwusłupkowego, Acer distylum, autorstwa Peter’a Gregory’ego (Polski) Opis klonu: Acer distylum

This is the Polish version of Peter's A. distylum profile, for English and French versions scroll further on this page.

Fiche descriptive d'érable à feuilles de tilleul, Acer distylum, par Peter Gregory (traduction française) Fiche Erable: Acer distylum

This is the French version of Peter's A. distylum profile, for English version scroll further on this page.

Maples of Iturraran Botanical Garden: Acer section Trifoliata (Pax) 1885

First in an exciting new multilingial series, bringing you the maples of one of Europe's great Botanical Gardens, Iturraran.  By Francisco Garin, Former Director of Iturraran.  In English, French and Spanish!  En Anglais, Francais et Espagnole.  En Inglés, Español y Francés.