Agarwood

Agaru (Aquilaria agallocha, Fam. Thymelaeaceae) is Agarwood or Eagle-wood, one of the most prized aromatic woods. Found in Northeast India (Assam), Myanmar, and Southeast Asia. The fragrant resinous wood forms when the tree is infected by a specific fungus (Fungi Imperfecti — hence the name 'Krimija' meaning 'born of worms'). Healthy trees produce no fragrant wood. The infected resinous heartwood sinks in water, while uninfected wood floats. This is a key identification test. Agaru is hot in potency, aromatic, and used in heart diseases, cough, asthma, and Vata disorders. The oil is used in perfumery and incense. It is burned as dhoop (incense) in temples. Multiple grades exist — Krishna (black) Agaru is the best. Various types are described based on region of origin. The wood and oil command extremely high prices due to rarity. Book reference: Karpuradi Varga, shloka 22-23.