“…According to World Health Organization (WHO), 9 it is considered to be one of the most widely used medicinal plants in the world, widely used in folk medicine to treat skin conditions and diseases of the respiratory, digestive, vascular, urogenital, and nervous systems. 10,11 Many references have showed the components and antimicrobial, [12][13][14][15][16][17][18][19][20][21] insecticidal, [22][23][24][25][26] allelopathic, 22 antioxidant, 13,18,[27][28][29][30][31] antiparasitic, 32 and cytotoxic 12,13,17,33,34 This report is comprised of 2 parts: the first part used hydrodistillation to obtain the leaf essential oil of D. ambrosioides indigenous to Taiwan and its chemical components were determined using GC-FID and GC-MS. The second part determined the resistance to wood-decay fungal activities of the oil.…”