Bosistoa floydii, known as the five-leaf bosistoa or five-leaf bonewood is a rainforest tree found in north eastern New South Wales, Australia. A member of the citrus family, it is rare plant, with a ROTAP rating of 2RCi The tree was first described in 1977 by Thomas Gordon Hartley. The generic name Bosistoa honours the name of Joseph Bosisto, a manufacturer of essential oils. The specific epithet floydii honours the eminent Australian rainforest botanist Alexander Floyd.