"This term is a compound of two Greek words meaning "plant" and "healing" and is used to describe all forms of treatments using plants. In France this term is used to describe what we would call Medical Herbalism but aromatherapy is often included under the same heading"...Patricia Davis in "Aromatherapy, an A to Z".
It can be argued that perfumes created using vibrant, natural plant materials and extracts with no synthetic or chemical additives could also be regarded as a branch of Phytotherapy.