Chantransia hermannii (Roth) Desvaux and the systematic position of the genera Chantransia, Pseudochantransia and Audouinella

The occurrence of the species Chantransia hermannii (Roth) Desv. (Rhodophyceae) was found in a few sites in Poland. The description of the reproductive organs of this alga: monosporangia, tetrasporangia, antheridia, carpogones and gonimoblasts is given. The systematic position of the genera, Chantransia, Pseudochantransia and Audouinella is also discussed. The author suggests that the name of Chantransia should be retained as it is older than Audouinella, while the artificial name of Pseudochantransia should be eliminated.