[f. thale, ad. mod.L. thāliāna adj. (f. Thal the name of a German physician, 1542–83) + CRESS.] A book-name of Sisymbrium thalianum (Arabis thaliana, Linn.), N.O. Cruciferæ, a small herb, bearing small white flowers. Also called Thale Rock-cress.
1778. Lightfoot, Flora Scot., I. 358. Thale’s Cress, or coded Mouse-ear.
1835. Hooker, Brit. Flora (ed. 3), I. 307. S[isymbrium] thalianum, (common Thale-cress).
