Cystoderma

Cystoderma is a genus of fungi in the family Agaricaceae. These mushrooms are characterized by their small to medium size, typically with a cap that is initially convex and becomes flatter with age. The cap surface is often covered with fine, powdery scales, a distinguishing feature of the genus. The gills are usually adnate to subdecurrent, and their color can range from white to cream.

The stem of Cystoderma species is generally slender and can be hollow or solid. It often exhibits a scaly or powdery texture, mirroring the cap. A fragile ring may be present in younger specimens, but it often disappears as the mushroom matures. The spore print of Cystoderma is typically white to cream.

This genus is saprobic, meaning they obtain nutrients from dead organic matter, and are commonly found growing in soil, leaf litter, or on decaying wood in forests. While some species have been investigated for potential edible properties, many are considered inedible or even poisonous due to the presence of certain toxins. Identification of Cystoderma species requires careful examination of morphological features, including the cap's texture, gill attachment, and the presence and nature of any rings. Distribution is widespread, with species found in temperate regions across the globe.