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SUMMARY
The spores of 25 taxa of agarics in the Tricholomataceae were studied with use of the scanning-electron microscope and a variation of surfaces is illustrated. Except for Melanoleuca robinsoniae, the species studied have been placed in Clitocybe and/or Lepista by various investigators, but the results yield additional evidence of a continuum between the two genera. The characteristics of Melanoleuca (Tricholoma) robinsoniae proved to be those of a Clitocybe also, and the new name Clitocybe celata is proposed.