This name is a synonym of Erica parviflora var. exigua (Salisb.) Bolus.
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: 373 1802.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:328655-1.
This name was in version 1 of The Plant List, record kew-2793232, and has not been changed.