About crossing systems of protected plants of the Middle Urals

The results of analysis of literature sources and researcher's observations are showed. The results are concerned on the characteristics of crossing systems of protected Angiosperms, included in the Red book of the Middle Urals. 132 species of protected plants were studied, 89 of them from 28 families are Magnolipsida, 43 of them from 28 families are Liliopsida. Among Liliopsida species leader is the family Orchidaceae with 32 species. The next is Fabaceae with 11 species. Then in the descending order are Ranunculaceae (10 species), Asteraceae (9), Scrophulariaceae (8), Caryophyllaceae (7), Brassicaceae (6) and Lamiaceae (6). Other families are represented with 1-4 species. As regards to reproductive biology, the most threat status is stated for the species with obligate xenogamy, which (for different reasons) can't be self-pollinated. In the Middle Urals such species are many endemic orchids, whose flower arrangement excludes self-pollination. The information on this topic was clearly insufficient. The need to study protected plants by their crossing systems is emphasized.