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 13028461) with original publication details: J. Bot. Agric. 2: 23, pl. 73 1814.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:485304-1.
This name was in version 1 of The Plant List, record tro-13028461.