Books received by the Rijksherbarium library

The tenth issue of this colour atlas of ectomycorrhizae comprises new keys to determination of ectomycorrhizae on Nothofagus, Populus, Tetraberlina, and Tsuga, as well as revised keys to those on Alnus, Carpinus, Picea, Pinus, Pseudotsuga, and Salix. Together with the already published keys in the former issues of this very valuable series, altogether 269 species of ectomycorrhizae can be determined. A computer checklist with 337 characters and up to 20 character states is included. The colour plates in this tenth issue deal with fifteen identified and eight unidentified ectomycorrhizae on various economically important forest trees such as Picea abies, Pinus sylvestris, and Nothofagus pumilo.