Two marine fungi new for the White Sea

Abstract

In the marine mycobiota of decaying plant materials near Pertsov White Sea Biological Station, numerous fungi were found, two of them are new to the White Sea. Residues of littoral halophytes were collected in August 2009 and 2015 in the supralittoral area; the work was carried out by noncultural methods. New to the White Sea species Phaeosphaeria neomaritima (R.V. Gessner et Kohlm.) Shoemaker et C.E. Babc. were found on 11 fragments, mostly on the residues of halophyte plants Juncus atrofuscus (rush). P. neomaritima is detected in both years in different points of the investigated area. Ascocarps of this fungus were immature. Apparently, they mature later than mid-August in the White Sea. The second species, Pleospora triglochinicola Webster, is new not only for White Sea but also for all Russian Seas. It is found in the 12 fragments of halophyte Triglochin maritima, in both years, on different points of investigated area. Both species are common in the study area. The article contains descriptions and photographs, as well as discussions on the environmental and geographical distribution of these species.