This name is a synonym of Viguiera cornifolia (Kunth) S.F.Blake.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 2706463) with original publication details: Nov. Gen. Sp. (folio ed.) 4: 175 1820.
This name record (from Tropicos) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Helianthus cornifolia in version 1 of The Plant List.