CHRYSOSPHAERA-SIEMINSKAE SPECIES NOVA, A NEW CHRYSOSPHAERA SPECIES FROM POLAND

A new species of Chrysosphaera - Ch. sieminskae has been found in Pola nd. It is an alga forming compact colonies consisting of single cell s tructures settled down at Testacea's transluscent carapace (e.g. Eugly pha, Centropyxis, Difflugia). The new species, which grows on specific animal host and is characterized by a peculiar organization of coloni es, differs in shape and size of its cells from all other taxons belon ging to the same genus. This new species has been found in the conditi ons of poor fen habitats, in water bodies at pH from 3.9 to 5.0.