The record derives from TICA
(data supplied on )
which reports it as a synonym (record
DCD21EE1-F330-4FE6-ADD8-7B95E7302AF6) with original publication details: "Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Klasse, Denkschriften 48(2):" 113 1884.
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 Achillea ptarmica in version 1 of The Plant List.