“…Byrne et al (1976) reported the average concentration of arsenic in 27 species of mushrooms as 1.3 mg kg-1. High concentrations of arsenic were found in Lycoperdon perlatum (6.8 mg kg-1 , Byrne et al, 1976), in the edible Laccaria amethystea (up to 182 mg kg-1, Byrne eta!., 1983, Stiyve eta/., 1990, in Laccaria laccata (average of 10 samples 10.9 mg kg-1), in Laccaria fratema (average off our samples 129 mg kg-1, Stijve et al, 1990), in Agaricus haemorrhoidarius (1.1-7.3 mg kg-1 ), in Agaricus. macrosporus (1.5-17 mg kg-1), in Agaricus perrarus (10.3 mg kg-1 , Stijve et al, 1991), in Coprinus atramentarius (11.8 mg kg-1), in Langermannia gigantea (7 .1 mg kg-1 ), in Lepista nuda (5.4 mg kg-1), and in Macrolepiota rhacodes (26.6 mg kg-1, Vetter, 1989Vetter, , 1990.…”