This name is a synonym of Brassica rapa L..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name with original publication details: J. Jap. Bot. 5: 48 1928.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:279413-1.
This name was in version 1 of The Plant List, record kew-2682374.