This name is a synonym of Kniphofia princeae (A.Berger) Marais.
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 297850) with original publication details: Bot. Jahrb. Syst. 36: 64 1905.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:529793-1.
This name was in version 1 of The Plant List, record kew-297850, and has not been changed.