This name is a synonym of Antennaria media Greene.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 4B4D736E-29DA-4A66-A848-FC7301216297).
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 Antennaria media in version 1 of The Plant List.