A leap forward in geographic scale for forest ectomycorrhizal fungi Filipa Cox, Nadia Barsoum, Martin I. Bidartondo, Isabella Børja, Erik Lilleskov, Lars O. Nilsson, Pasi Rautio, Kath Tubby and Lars Vesterdal Ann. For. Sci., 67 2 (2010) 200 Published online: 01 February 2010 DOI: 10.1051/forest/2009107