In this paper the content of Mn, Fe, Zn, Cu, Pb, Ni, Cr and Cd was studied in forest floor plants of Puszcza Biaµa Forest. Test plants used were lichens, mosses, club-mosses, ferns, convallaria, and bilberries. Puszcza Biaµa Forest belongs to a region free from pollution by heavy metals. Higher content of manganese, as compared with iron, was found in the following plants: Cladonia clavatum (wolf's claw), Dryopteris filix-mas (shield fern), Convalaria maialis (convallaria), and Vaccinium myrtillus (bilberry). In lichens and mosses the proportion was the opposite: they contained more iron than manganese. The stated concentration of Zn, Cu, Pb, Ni, Cr and Cd was very little differentiated considering particular plant species of forest floor. And those were appreciated at the natural level, typical for the unpolluted area of Poland.