This name is a synonym of Lepidium minutiflorum (Ridl.) Hewson.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100357902) with original publication details: Trans. Linn. Soc. London, Bot. 9: 17 1916.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:287932-1.
This name was in version 1 of The Plant List, record tro-100357902, and has not been changed.