Viola selkirkii (Violaceae) pursh ex goldie on the southern border of the area (the «Verhovia Suri» section of the reserve «Privolzskaya lesostep», Penza region)

The article describes a recently discovered population of Viola selkirkii Pursh ex Goldie, an extremely rare species in the Penza region. The habitat is forest of Alnus glutinosa (L.) Gaertn. with an admixture of Betula pubescens Ehrh. in the floodplain of the Sura River. The assessment of the ecological characteristics of the site coincides with those described in other parts of the area. The species is demanding on the level of soil moisture and salt richness of the soil, as well as shade tolerance. Individuals of all ontogenetic states were found, and their qualitative characteristics were compared with those described in the literature. No vegetative reproduction was detected. The population is full-fledged, young, normal, renewal is carried out by seed. The phenological characteristics of flowering are given.