The morphology of the blackberry leaf (Rubus plicatus Weihe & Nees) captured with the stereomicroscope, depending on the sampling point. Jiu Gorge Natural Park: Bratcu Valley (control) A adaxial surface (4×) B abaxial surface (2×); Meri quarry C adaxial surface, with lesions (4×) D abaxial surface, with insect egg deposits (4×); Iron Gates National Park: Sirinia Valley (control) E adaxial surface (2×) F the abaxial surface (4×); Eșelnița quarry G the adaxial surface, with necrosis (2×), H abaxial surfaceface, with necrosis, insects and dust (1×).