Found this hairless orange operculate fungi largest around 2mm on damp soil near a river close to Salix. The spores obviously led me to this species but a few contentious sps had to be checked. I tried to check the spines off the spores and the majority were less than 2µm, few slightly larger. The spores within the asci suggested slighly subglobose shaping rather than spherical so came to the conclusion that this probably was R. asperior. First for Cornwall where I survey, with just two other in SW England. If anything esle would be even rarer.

With thanks for your opinion based on the images I can provided here.
Tony Hardware  (Brought Peter Thompson's book last week - that got me on the road to this species)