Parkhomenko Vasiliy Mikhaylovich RussiaSaratovSaratov State University, 410012, Saratov, Astrakhanskaya, 83parhomenko_vm@mail.ru Author's articles Vitality state cenopopulations of Hypericum perforatum in Saratov region About a new location and possible reasons of rarity of broad-leaved wormwood on the territory of Saratov region Floristic and ecological characteristic of plant association with participation of Hypericum perforatum in Saratov region Changeability and flexibility of some morphological parameters Hypericum perforatum (using the example of the Right-bank area of Saratov region) Влияние эколого-фитоценотической обстановки местообитаний на рост и развитие Hypericum perforatum L.