Abstract: A new species, Unguicularia equiseti Huhtinen, characterized by its branched hairs, is described from SW Finland. T he species grov.s on blackened stems of Equisetum sylvaticum L. A new collection of a rare discomycete, Albotricha laetior (Karst.) Raitv., is described and discussed, and the species is considered lignicolous. A warning is given that certain mountants currently in common use frequently have a shrinkmg effect. In many cases sections revived in these mountants fall to regain their natural dimensions. The taxonomic importance of this phenomenon is briefly discussed.