On the stipe, no reaction. On the other hand, the color of the flesh varies according to the specimen studied for KOH and NaOH, and also according to the part of the flesh where the chemical reagent is applied. The two fruitbodies studied here were collected from the same place, about 10 m apart.
We believed that the reaction to chemicals was a "foolproof" criterion for separating species from each other. We have to admit that this is not always the case.
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