Cystodermella is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of fungi in the family Agaricaceae

Agaricaceae

The Agaricaceae are a family of basidiomycete fungi and includes the genus Agaricus, as well as basidiomycetes previously classified in the families Tulostomataceae, Lepiotaceae, and Lycoperdaceae. The genus contains 85 genera and 1340 species.-Genera:...

.

The genus comprises approximately 12 species, noted for producing agaric

Agaric

An agaric is a type of fungal fruiting body characterized by the presence of a pileus that is clearly differentiated from the stipe , with lamellae on the underside of the pileus. "Agaric" can also refer to a basidiomycete species characterized by an agaric-type fruiting body...

 fruiting bodies

Sporocarp (fungi)

In fungi, the sporocarp is a multicellular structure on which spore-producing structures, such as basidia or asci, are borne...

, bearing a cap

Pileus (mycology)

The pileus is the technical name for the cap, or cap-like part, of a basidiocarp or ascocarp that supports a spore-bearing surface, the hymenium. The hymenium may consist of lamellae, tubes, or teeth, on the underside of the pileus...

, white gills and stem

Stipe (mycology)

thumb|150px|right|Diagram of a [[basidiomycete]] stipe with an [[annulus |annulus]] and [[volva |volva]]In mycology a stipe refers to the stem or stalk-like feature supporting the cap of a mushroom. Like all tissues of the mushroom other than the hymenium, the stipe is composed of sterile hyphal...

 with a fine, ephemeral ring

Annulus (mycology)

An annulus is the ring like structure sometimes found on the stipe of some species of mushrooms. The annulus represents the remaining part of the partial veil, after it has ruptured to expose the gills or other spore-producing surface. An annulus may be thick and membranous, or it may be cobweb-like...

. The genus was devised by Harmaja in 2002, dividing the older genus Cystoderma into three independent genera: Cystoderma

Cystoderma

Cystoderma is a genus of fungi in the family Agaricaceae.The name probably comes from the Greek kýstis meaning pouch and derma meaning skin.-List of species:Below is an incomplete list of Cystoderma species....

, Ripartitella

Ripartitella

Ripartitella is a genus of fungi in the family Agaricaceae.-External links:* at Index Fungorum...

and Cystodermella largely on the basis of microscopic differences. Cystodermella species bear non-amyloid

Amyloid (mycology)

In mycology the term amyloid refers to a crude chemical test using iodine in either Melzer's reagent or Lugol's solution, to produce a black to blue-black positive reaction. It is called amyloid because starch gives a similar reaction, and that reaction for starch is also called an amyloid reaction...

 spores and sometimes cystidia

Cystidium

A cystidium is a relatively large cell found on the hymenium of a basidiomycete , often between clusters of basidia. Since cystidia have highly varied and distinct shapes that are often unique to a particular species or genus, they are a useful micromorphological characteristic in the...

. The spores, in contrast to Ripartitella are not echinulate

Echinulate

Echinulate is an adjective describing the spiny, or "spiky" nature of some spores found in plants and fungi; an example is the auxiliary cell. The words derives from the same root as the prefix echino, meaning that the shape is similar to the porcupine ....

.

Species of the genus have a saprotrophic mode of nutrition, and occur around the world.

List of species

Below is an incomplete list of Cystodermella species.

• Cystodermella adnatifolia
• Cystodermella ambrosii
• Cystodermella cinnabarina
  Cystodermella cinnabarina
  Cystodermella cinnabarina is a basidiomycete fungus of the genus Cystodermella. Its fruiting body is a small agaric bearing a distinctive reddish-coloured grainy cap. It occurs in coniferous and deciduous forests throughout the world...
  
  
• Cystodermella contusifolia
• Cystodermella cristallifera
• Cystodermella elegans
  Cystodermella elegans
  Cystodermella elegans is a fungus species in the genus Cystodermella....
  
  
• Cystodermella granulosa
• Cystodermella japonica
• Cystodermella myriadocystis
• Cystodermella subpurpurea