Abstract
Ectomycorrhizae of Cortinarius obtusus and C. venetus var. montanus on spruce are comprehensively described and compared. They differ in some anatomical, morphological and chemical features and in autofluorescence. Both species produce contact-clamps. The literature on anatomical and morphological features of ectomycorrhizae characterized so far for species of Cortinarius subgenera Leprocybe and Telamonia is reviewed. A key is included for the ectomycorrhizae characterized to date in this series.