This name is a synonym of Impatiens capensis f. albiflora (E.L. Rand & Redfield) Fernald & B.G. Schub..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50134797) with original publication details: Rhodora 19(223): 115 1917.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:128213-2.
This name was in version 1 of The Plant List, record tro-50134797.