A new species of Mycena sect. Sacchariferae from the Iberian cushion-shaped Genisteae

Mycena acanthophila, collected from several localities in Spain, is described as a new species. It specialises by growing on dead branches of two spiny, cushion-shaped species of Leguminosae. A complete description, drawings, and microphotographs showing the morphological characters are accompanied by comparisons with morphologically related taxa.