要約

This brief report deals with the finding of Chrysodidymus, a new genus of chrysophytes for the Ukrainian algal flora, which has been found on the territory of "Dermansko-Ostrozkyi" National Nature Park (Rivne Region, Ukraine). Chrysodidymus synuroideus Prowse was revealed using the SEM. The paper is illustrated with the original micrographs. The genus Chrysodidymus was described from the acid swamps in Malaysia in 1962, and since then it has been found in many places on the Earth. Nevertheless, the records of Ch. synuroideus Prowse are very limited in Europe. We analyzed published micrographs of the scales of Ch. synuroideus and revealed that the genus consists of two species, one of which is distributed in the temperate zone, and the second one is restricted to tropics and subtropics. For the further revision of the genus Chrysodidymus, it should be typified.