Description from Flora of China
Cochleariella Y. H. Zhang & R. Vogt; Cochleariopsis Y. H. Zhang (1985), not Á.. Löve & D. Löve (1976); Hilliella (O. E. Schulz) Y. H. Zhang & H. W. Li.
Herbs annual or perennial with tubers or rhizomes. Trichomes absent or simple or 1- or 2-forked. Stems erect, ascending, or decumbent. Basal leaves not rosulate, simple, undivided or pinnately or palmately lobed, trifoliolate, or pinnately compound. Cauline leaves petiolate, not auriculate, similar to basal leaves or simple upward. Racemes few to many flowered, ebracteate or rarely bracteate throughout. Fruiting pedicels erect, ascending, divaricate, or reflexed. Sepals oblong or ovate, spreading, not saccate. Petals white or rarely pinkish, spreading, longer than sepals; blade obovate, oblong, or ovate, apex rounded; claw absent or short. Stamens 6, spreading, subequal; filaments not dilated at base; anthers ovate or oblong, apex obtuse. Median nectaries absent; lateral glands 1 on each side of lateral stamen. Ovules 1-24 per ovary. Fruit dehiscent silicles, oblong, ovoid, ellipsoid, or globose, terete, rarely slightly latiseptate or angustiseptate, sessile; valves veinless or obscurely veined, glabrous, papillate, or with simple trichomes, smooth; replum rounded; septum complete, perforated, or absent; style obsolete or to 3 mm; stigma discoid, entire. Seeds uniseriate or biseriate, wingless, oblong, ovate, reniform, orbicular, ovoid, lenticular, elliptic, ellipsoid, or globose, slightly flattened; seed coat minutely reticulate or papillate, not mucilaginous when wetted; cotyledons incumbent or rarely accumbent.
All species of Yinshania were treated in FRPS as members of Cochlearia, a genus that does not occur in China, the Himalaya, or SW Asia. A few species of Cochlearia grow in N Russia, with the range of one extending into Japan. The record of C. officinalis Linnaeus in FPRS (p. 98) is likely an error. For a detailed account of Yinshania and its segregates see Al-Shehbaz et al. (Harvard Pap. Bot. 3(1): 79-94. 1998).
Thirteen species: China, N Vietnam; 13 species (12 endemic) in China.