This name is a synonym of Helianthus debilis subsp. vestitus (E.Watson) Heiser.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 83755BC7-D717-459A-8289-B4578BE5C240) with original publication details: 1929.
This name was in version 1 of The Plant List, record gcc-111972, and has not been changed.