Acacia pinguifolia, commonly known as the Fat-leaved wattle or Fat-leaf wattle, is endemic to South Australia, and is listed as an endangered species. It is in the Plurinerves section of the Acacias.[1]
It is found on the southern Eyre Peninsula and has a disjunct population near Finniss in the south Lofty region. It mainly grows in sandy or hard alkaline soils, in open scrub or woodland.
The species was first described in 1947 by the botanist John McConnell Black, from a specimen collected on the Finniss River near Lake Alexandrina, in South Australia. The species epithet, pinguifolia, derives from the Latin adjective, pinguis ("fat") and the compounding root, -folius ("-leaved") to give a Botanical Latin adjective which describes the plant as being "fat-leaved".