This name is a synonym of Teucrium lusitanicum Schreb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 454185) with original publication details: Bull. Soc. Hist. Nat. Afrique N. 23: 209 1932.
This name record (from WCSP) 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 Teucrium polium in version 1 of The Plant List.