This name is a synonym of Calendula incana subsp. maderensis (DC.) Ohle.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A970216A-B31C-4C27-8F13-45DBFBDF8D24) with original publication details: 454 1838.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:187872-1.
This name was in version 1 of The Plant List, record gcc-37673.