Depressed herb, up to c. 10 cm. tall. Stock fleshy, c. 1·5 cm. diam., with deeply descending taproot, crowned by rosette of basal lvs. Radical lvs ± 4 × 1·5 cm., oblong-spathulate, subcoriac., sharply serrate to subpinnatifid, narrow into broad flat petiole, stellate-pubescent above and below. Cauline lvs smaller, narrower, sparingly toothed. Flowering stem branched from base; infl. compact, up to 10 cm. or more across. Pedicels slender, spreading, c. 6 mm. long. Sepals 3 mm. long, oblong, acute. Petals ± spathulate, ± 5 mm. long, claws long. Siliques narrow-linear, ± 2.5-3·5 cm. long, ± 2 mm. broad. Seeds compressed, < 1 mm. long, reddish brown.