This name is a synonym of Senna obtusifolia (L.) H.S.Irwin & Barneby.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100307124) with original publication details: Syn. Pl. 1: 456 1805.
This name was in version 1 of The Plant List, record tro-100307124.