This name is a synonym of Myoxanthus affinis (Lindl.) Luer.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 159253) with original publication details: Companion Bot. Mag. 2: 354 1837.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:202340-2.
This name was in version 1 of The Plant List, record kew-159253, and has not been changed.