This name is a synonym of Dahlia cordifolia (Sessé & Moc.) McVaugh.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 7F040C6B-F2A9-40EE-83EE-2130BC102563) with original publication details: 147 1890.
This name was in version 1 of The Plant List, record gcc-17957, and has not been changed.