This name is a synonym of Pachystachys spicata (Ruiz & Pav.) Wassh..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Fl. Peruv. 1: 8 1798.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:306214-2.
This name was in version 1 of The Plant List, record kew-2330020, and has not been changed.