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The structure of cristatomentin (5), the green pigment of the toadstool Albatrellus cristatus, has been elucidated by MS studies and a comparison of the NMR spectrum of 5 with the data for cristatic acid (1) and albatrellin (6). The furylbenzoquinone chromophore of 5 may be derived from 1 and 2‐O‐acetylatromentin (4), which co‐occur with cristatomentin in the fungus.