Acacia penninervis
 Acacia penninervis commonly known as hickory wattle mountain hickory or blackwood is a perennial shrub or tree 2–8m high which is native to Australia.Its uses include environmental management. The tannin content of the bark is approximately 18%.It occurs in the Australian states of Australian Capital Territory New South Wales Queensland and Victoria and as an introduced species on New Zealand's North Island and South Island. The variety A. p. var.