Brassica juncea var. japonica

Brassica juncea var. japonica

Brassica juncea var. japonica (Thunb.) L. H. Bailey.
Engl.: cut-leaf mustard, dissected-leaf mustard.
Jap.: irana.
TCM: shui cai.
Bot. syn.: Brassica japonica Thunb., Sinapis japonica Thunb.

I have no articles for this botanical term, but there might be some for the next level down (if found).