Spermatophyte plants that have unenclosed, "naked seeds": The fifth extant division is the flowering plants, also known as angiosperms or magnoliophytes, the largest and most diverse group of spermatophytes. Angiosperms possess seeds enclosed in a fruit, unlike gymnosperms. In addition to the taxa listed above, the fossil record contains evidence of many extinct taxa of seed plants. The so-called "seed ferns" (Pteridospermae) were one of the earliest successful groups of land plants, and forests dominated by seed ferns were prevalent in the late Paleozoic. "Glossopteris" was the most prominent tree genus in the ancient southern supercontinent of Gondwana during the Permian
Botanical Garden named after Rostovtsev and a botanical garden was headed by Professor V. G. Khrzhanovsky. When it was built a greenhouse for subtropical plants. At present, on the basis of the botanical garden, summer scientific research and production practice is conducted. Students study there ways of plant reproduction, morphogenesis, as well as technologies of landscape design. Periodically free excursions are organized for all comers. In the botanical garden there are landscapes, ornamental and experimental sites, as well as a greenhouse with an area of about 400 m². According to data for 2012, in the botanical garden there are about 600 species and forms of