flower of gentiana asclepiadea, the willow gentian, blooming in autumn forest, poland, europe

2022 alkaloids aperol areas asclepiadea autumn azur biodiversity biology bitters bloom blooming blue botany carpathian colored corolla ecology europe family flower flowering flowers forest gentian gentiana gentianaceae gorce green habitat inflorescence intensely journey less montane mountain native nature occur open pasture pasturelarge perfumery plant plants poland protected some species stare trip violet wierchy willow wooded woodland