Contribution to the Lithuanian water moulds. New reports of critical Achlya (Saprolegniaceae, Peronosporomycetes) species. [Papildomi duomenys apie Lietuvos dumbliagrybius. Nauji pranešimai apie kritines Achlya (Saprolegniaceae, Peronosporomycetes) rūšis]. – Botanica Lithuanica, 13(1): 39–44

Notes on the occurrence of two new and critical species of straminipilous fungi in fresh waters of Lithuania are presented, and their taxonomy is discussed. Short descriptions, illustrations, and notes on species morphological variability are given, basing on detailed comparative studies of living pure cultures.

Keywords: straminipilous fungi, Achlya, fresh water, diversity, taxonomy, Lithuania.