New Czechoslovak record of Clavariadelphus flavo-immaturus Petersen is reported. Morphological and microscopic characters are provided. The species differs from C. pistillaris by macroscopic characters and its hymenial reaction to KOH and FeSO₄.
Hagara L. (1986): Czechoslovak records. 26. Clavariadelphus flavo-immaturus Petersen. – Česká Mykologie 40(1): 41.