Senna spectabilis is a plant species of the legume family (Fabaceae) in the subfamily Caesalpinioideae. S. spectabilis was long placed in Cassia, or in the non-monophyletic Cathartocarpus assemblage, or separated - together with its relative Senna peralteana - in Pseudocassia. In addition, it has been variously treated under a range of taxa, some of which were also used for related plants: In addition, one or two varieties of this species are recognized: