This name is a synonym of Gladiolus dalenii Van Geel.
The record derives from iPlants
(data supplied on 2012-03-23)
which reports it as a synonym (record 328766) with original publication details: Bot. Mag. 57: t. 3032 1830.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:437758-1.
This name was in version 1 of The Plant List, record kew-328766.