This article is about the tree. For the resinous heartwood from Aquilaria trees, see
is a species of Aquilaria crassna plant in the Thymelaeaceae family. It is found in throughout Southeast Asia and in New Guinea.
Economics [edit ]
Aquilaria crassna is one source of agarwood, a resinous heartwood, used for perfume and incense.  The resin is produced by the tree in response to infection by a parasitic  ascomycetous mould, Phaeoacremonium parasitica, a  dematiaceous (dark-walled) fungus.
References [edit ]
^ Nghia, N.H. (1998). ". Aquilaria crassna" . IUCN Red List of Threatened Species. Version 2013.2 International Union for Conservation of Nature . Retrieved . 13 March 2014
^ Ng, L.T., Chang Y.S. and Kadir, A.A. (1997) "A review on agar (gaharu) producing Aquilaria species" Journal of Tropical Forest Products 2(2): pp. 272-285
^ Broad, S. (1995) "Agarwood harvesting in Vietnam" TRAFFIC Bulletin 15:96
^ formerly Phialophora parasitica Crous, P. W. et al. (1996) "Phaeoacremonium gen. nov. associated with wilt and decline diseases of woody hosts and human infections." Mycologia 88(5): pp. 786–796