This name is a synonym of Helianthus cinereus Torr. & A.Gray.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 261E0EB7-8FD7-4215-9571-9F69404099A3).
This name record (from TICA) 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 cinereus in version 1 of The Plant List.