DescriptionAlnus incana ssp incana range map 1.png	English: Distribution map of Alnus incana—gray alder in Europe. Deutsch: Natürliche Verbreitung der Grau-Erle (Alnus incana) in Europa
Date	31 December 2009
Source	File:IKAl 091231 Distribution Alnus incana.png (modified by uploader to somewhat match the style of 2 North American subspecies maps)
Author	IKAl
Other versions

Data used from Schütt, Weisgerber, Schuck, Lang, Stimm, Roloff: "Enzyklopädie der Laubbäume". Nikol, Hamburg, 2006, ISBN 3-937872-39-6, page=98, reference used there

A. Schwabe: Monographie Alnus incana-reicher Waldgesellschaften in Europa. Variabilität und Ähnlichkeiten einer azonal verbreiteten Gesellschaftsgruppe. Phytocoenologia 13, 197-302, 1985

Map was extended to eastern Europe and the Caucasus following the map shown here on The Linnaeus Server of the Swedish Museum of Natural History probably taken from

E. Hultén, M. Fries: Atlas of North European vascular plants: north of the Tropic of Cancer I-III.. - Koeltz Scientific Books, Königstein, 1986, ISBN 3-874292-63-0

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