– Mimosa virginalis Arruda (Koster 1816: 500), nom. nud.

Mimosa virginalis Arruda was cited by Koster (1816) in a brief comment about the medicinal use of the plant, especially regarding its astringent properties, without mentioning any of its morphological characteristics or anything that can be interpreted as a diagnosis. There is no intention of the author in treating the plant as a new species, or as a species distinct from the remaining Mimosa . According to Stafleu & Cowan (1976), the nomenclatural types of the species described by Arruda da Câmara are unknown, thus it is not possible to confirm the identity of Mimosa virginalis, neither as a synonym of Stryphnodendron adstringens, as frequently recognized.