This name is a synonym of Bulbine latifolia (L.f.) Spreng..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 18401957) with original publication details: Fl. Cap. 6: 366. .
This name record (from Tropicos) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Bulbine brunsvigiaefolia in version 1 of The Plant List.