leaves of the medicinal plant very poisonous poison sumac, rhus toxicodendron, in summer, bavaria, germany

allergic allergy anacardiaceae botany care dangerous dermatitis dermatology flora foliage garden green health healthy homeopathy human infected infection injury itch itchy ivy leaf leaves medical medicinal medicine natural nature plant plants poison poisonous redness rhus sensitive sick skin sumac summer toxic toxicodendron urushiol