This name is a synonym of Pycnostachys umbrosa (Vatke) Perkins.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 46141) with original publication details: Linnaea 43: 91 1881.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:446203-1.
This name was in version 1 of The Plant List, record kew-46141.