Sulphur Disco - Calycina claroflava

Small brightly coloured yellow discs or shallow cups growing on dead wood, found in association with a dead pyrenomycetous fungus such as a barkspot or woodwart (e.g. Diatrype, Diatrypella or Hypoxylon).  More brightly coloured and slightly smaller  than more common Lemon Disco, Bisporella citrina, but separating the species with certainty requires measurement of spore size or demonstrating the close association with the pyrenomycete.

Lemon Disco

microscopy/host fungus A

Photograph in habitat; note substrate and associated plant and fungus species.  We recommend that this is identifed by an expert, from a specimen, before submission to NatureSpot; microscopy may be needed. 

On the dead stroma of pyrenomycetous fungi, growing on dead wood deciduous trees, often in woodland.

All year.