title: Phenotypic characteristics of retro cultivars of Hemerocallis x hybrida hort. study for their use in educational and educational purposes
abstract: This article presents the results of studying the variability of some phenotypic characteristics of retro cultivars of Hemerocallis x hybrida hort. under the influence of selective selection. The sample is formed from the collection fund of the laboratory of ornamental plants of the Main Botanical Garden RAS and includes cultivars created in different countries in the period from the middle of the XIX century to the early 1960s of the XX century. In the course of research, it was found that the 
journal: FORESTRY BULLETIN