Acacia pyrifolia, commonly known as Ranji Bush is a shrub

Shrub

A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...

 that is endemic to the north of Western Australia

Western Australia

Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

. It produces rounded yellow flowerheads between April and August in the species native range. It was first formally described in 1825 by Swiss botanist Augustin Pyramus de Candolle in the second volume of his publication Prodromus Systematis Naturalis Regni Vegetabilis.