This name is a synonym of Lepidium didymum L..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50070469) with original publication details: Enum. Pl. 2: 668 1809.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:288907-1.
This name was in version 1 of The Plant List, record tro-50070469.