Sinapis juncea Linnaeus var. napiformis Pailleux & Bois, Potager d'un Curieux 2: 372. 1892; Brassica juncea subsp. napiformis (Pailleux & Bois) Gladis; B. juncea var. megarrhiza M. Tsen & S. H. Lee; B. napiformis (Pailleux & Bois) L. H. Bailey.

Plants biennial. Taproots fleshy, napiform, conical, oblong, or obovoid, 7-10 cm in diam. Basal leaves with a slender, nonfleshy petiole, midvein not flattened; leaf blade 5-30 cm; margin irregularly dentate or pinnatisect with crisped, incised lobes. Fl. Apr-May, fr. May-Jun. 2n = 36*.

Cultivated as a vegetable and for forage. Throughout China [distribution outside China uncertain].