Giftpilze der Schweiz - Giftpilze in Bildern, Pilzgifte, Tödliche Pilze, Verwechslungsgefahr.
Mycokey - A synoptic key for determination of fungal genera. This first version includes 180 genera and about 750 illustrated species. It covers the genera of basidiomycota with stem and cap (Agarics, Boletes etc.) from Northern Europe.
Saccharomyces Genome Database (Stanford University) - SGD is a scientific database of the molecular biology and genetics of the yeast Saccharomyces cerevisiae, which is commonly known as baker's or budding yeast.