The paper is concerned with a complete list of plant species which are put down into the "Red Data Book of the USSR" (1984) and the "Red Data Book of the Ukrainian SSR" (1980) for the first time. These species are met in the territory of the Black Sea State Biospheric Reserve of the Ukr. SSR Academy of Sciences. Their distribution in the reserve is characterized, and their abundance is indicated. Evidence on four species recommended for the regional protection are presented.