This name is a synonym of Thyrsacanthus boliviensis Côrtes, Ana Luiza A. & Rapini.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 103814) with original publication details: Symb. Fl. Argent. 261 1879.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:228923-2.
This name was in version 1 of The Plant List, record tro-103814.