Vaucheria coronata and V. velutina – new species of the yellow-green algae of the Xanthophyceae for the Arkhangelsk Region (White Sea)

The article provides information about two species of the yellow-green algae – Vaucheria coronata and V. velutina. Vaucheria coronata was found on the Solovetsky Islands and is the secondly recorded for the species in Russia and for the first for the Arkhangelsk Region. Vaucheria velutina is indicated for the first time for the White Sea. A brief description of the localities and habitats of growth and general distribution of these species is given. Morphological features of the studied specimens are given.