This name is a synonym of Kungia schoenlandii var. stenostachya (Fröd.) K.T. Fu.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8903776) with original publication details: Acta Horti Gothob. 7(5) App.: 113, f. 918–926 1932.
This name was in version 1 of The Plant List, record tro-8903776, and has not been changed.