title: Ontogenetic and spatial structure of Ptilostemon echinocephalus (Willd.) Greuter (Lamyra echinocephala (Willd.) Tamamsch.) coenopopulations in the Crimean Mountains
abstract: The article analyzes the state of Ptilostemon echinocephalus (Willd.) Greuter (Lamyra echinocephala (Willd.) Tamamsch.) coenopopulations, a relict species included in the Red Data Book of the Republic of Crimea. Studies of Ptilostemon echinocephalus coenopopulations were conducted in 2018-2021 on the territory of the Crimean Peninsula in 10 associations. The analysis of the ontogenetic and spatial structure of Ptilostemon echinocephalus was conducted. The characteristics of coenopopulations are 
journal: IOP Conference Series Earth and Environmental Science