This name is a synonym of Metrosideros angustifolia (L.) Sm..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 132304) with original publication details: Mant. Pl. 1: 74 1767.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:599590-1.
This name was in version 1 of The Plant List, record kew-132304, and has not been changed.