This name is a synonym of Erica viscaria subsp. longifolia (F.A.Bauer) E.G.H.Oliv. & I.M.Oliv..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Trans. Linn. Soc. London 6: 364 1802.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:328218-1.
This name was in version 1 of The Plant List, record kew-2792654, and has not been changed.