This name is a synonym of Cyanus triumfettii subsp. nanus (Ten.) Greuter.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 222096C4-A94D-48CE-B6B7-49F095B2ACDB) with original publication details: 447 1831.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:60442197-2.
This name was in version 1 of The Plant List, record gcc-39840, and has not been changed.