The third delivery of this colour atlas contains an extended key for the identification of 64 ectomycorrhizae, new synoptic tables, and an updated list of literature. Twelve double sheets each with four excellent colour photographs and two pages of anatomical details in half-tone photomicrographs illustrate twelve new mycorrhizae: Amphinema byssoides, Cortinarius variecolor, Hygrophorus pustulatus, Paxillus involutus, Piceirhiza chordata, P. conspicua, P. gelatinosa, P. glutinosa, and P. guttata all on Picea abies; Dermocybe semisanguinea and Tylopilus felleus both on Pinus silvestris; Xerocomus chrysenteron on Fagus sylvatica.