Aquilaria is a genus of trees native to Southeast Asia, known for producing a valuable resin called agarwood. This resin forms when the tree becomes infected with a specific type of mold, leading to a dark, aromatic wood that is highly sought after for its fragrance and medicinal properties. Agarwood is used in various cultural practices, including incense and traditional medicine. It is also a key ingredient in perfumes and essential oils. Due to overharvesting and habitat loss, Aquilaria species are now considered endangered, prompting conservation efforts to protect these unique trees.