This name is a synonym of Dentella repens var. serpyllifolia (Wall. ex Craib) Verdc..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 60267) with original publication details: Fl. Siam. 2: 27 1932.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:748289-1.
This name was in version 1 of The Plant List, record kew-60267, and has not been changed.