Two specimens of Neocampanella blastanos (Boidin & Gilles) Nakasone, Hibbet & Goranova, 2009 (Basidiomycota, Agaricales), collected in Mayotte (France, Comoros archipelago, Indian Ocean), are described and illustrated and brieflly compared to morphologically similar taxa. This uncommon, probably pantropical species is characterized by a thin, resupinate and adhesive basidiome that is first white, then whitish to pale beige. It is characterized by a monomitic structure, hyphae with clamps and a multitude of crystals, scattered capitate leptocystidia, numerous dendrohyphidia and subfusiform to pyriform basidiospores.