Ailanthus triphysa (also Ailanthus malabarica) is a medium to tall evergreen rainforest tree that is native to Asia and Australia. The wood is used for matchwood and plywood. The tree is known as halmaddi in India, where its resin, also called halmaddi, may be used in incense. Inappropriate extraction methods were resulting in trees dying, thus by the 1990s the Indian forestry department had banned extraction.

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