Cystodermella

About

Cystodermella is a genus of fungi in the family Agaricaceae. The genus comprises about 12 species, noted for producing agaric fruit bodies, bearing a cap, white gills and stipe with a fine, ephemeral ring. The genus was devised by Harri Harmaja in 2002, dividing the older genus Cystoderma into three independent genera: Cystoderma, Ripartitella and Cystodermella largely on the basis of microscopic differences. Cystodermella species bear non-amyloid spores and sometimes cystidia. The spores, in contrast to Ripartitella are not echinulate.

Summary from Wikipedia