Peltigera species in the territory of Moscow oblast

Data concerning Peltigera lichens which are found in various areas of Moscow oblast, including especially protected natural territories, are generalized. It is offered to lower category of species P. horizontalis and P. venosa included in the Red Book of Moscow oblast and to include in it P. degenii and P. neckeri. The key for definition of Peltigera taxons, extended to territories of the area, is made.