Lindgomyces griseosporus, a new aquatic ascomycete from Europe including new records

•Lindgomyces griseosporus is proposed as a new species from France.•Lindgomyces ingoldianus and L. cinctosporae are reported for the first time from Europe.•Mature ascospores lack of sheath.

A new species of Lindgomyces (L. griseosporus) is described and illustrated from submerged wood collected in a small stream in southern France. It is morphologically characterized by gray, narrowly fusiform ascospores with supramedian primary septum, which lacks a mucilaginous sheath at maturity. Its relationships with other species of Lindgomyces are discussed based on both morphology and 28S rDNA sequence comparisons. Lindgomyces ingoldianus, the type species of Lindgomyces, and L. cinctosporae are reported for the first time from Europe.