Official scientific reference publication on the condition of rare and endangered plants and fungi growing in the Samara region . Presents the second edition, supplemented and revised, of the regional Red Book. The book includes 223 species of periosteum plants, 2 - gymnosperms, 14 - ferns-covides, 1 - coniferous, 3 - plaunoid, 3 - liverworts, 10 - mosses, 11 - algae, 14 - lichen-forming mushrooms, 5 - not forming lichen mushrooms . For each issue, modern information on the occurrence in the administrative districts of the Samara Region, the number and condition of local populations is presented, a brief description of the features of biology and ecology, limiting factors, adopted and necessary protective measures are given. The description of each species is accompanied by a distribution pattern and a color pattern. Designed for scientists, specialists of environmental organizations, environmentalists, teachers, students, students, school students, local lore and a wide range of nature lovers .