Senegalia is a genus of flowering plants in the family Fabaceae. It belongs to the Mimosoid clade. Until 2005, its species were considered members of Acacia. The genus was considered polyphyletic and required further division with the genera Parasenegalia and Pseudosenegalia accepted soon after. Senegalia can be distinguished from other acacias by its spicate inflorescences and non-spinescent stipules. Plants in the genus are native to the tropical and subtropical areas of the world, occurring on the Australian, Asian, African and South and North American continents, as well as in Wallacea.

Senegalia erubescens or as it is commonly known, Blue Thorn, is sometimes confused with Senegalia fleckii. The leaf and bark structure determines the difference. Senegalia erubescens has yellow papery bark that peels off in layers to reveal silver bark beneath. The leaf rachides recurve back wards. From September to November is carries creamy flowers that often has a pink tinge.