leaves and fruits of the medicinal shrub frangula alnus, rhamnus frangula with poisonous black and red berries closeup

buckthorn frangula rhamnus tree berries flora black plant leaf green alnus bush berry nature natural red background wild shrub fresh branch foliage poisonous medicinal garden herb organic ripe alder breaking fruit closeup summer botany deciduous plants fruits weed rhamnaceae toxic forest bunch autumn food