title: State of populations of rare s pecies Silene jailensis N.I. Rubzov and Heracleum ligusticifolium M. Bieb. on Nikitskaya Yayla
abstract: Populations of obligate petrophytes of the Mountain Crimea Heracleum ligusticifolium M. Bieb. (Apiaceae) and Silene jailensis N.I. Rubtzov (Caryophyllaceae) are distinguished by their small number due to the internal mechanism of their self-regulation: in small-area local stony habitats, plants of pregenerative age are regularly eliminated. This mechanis m operates independently of external threats, the adverse effect of which was smoothed out by the structural features of populations: the predo
journal: Plant Biology and Horticulture theory innovation