板蓝根
Isatis \I"sa*tis\ (?; 277), n. [L., a kind of plant, Gr. ? woad.] (Bot.) A genus of herbs, some species of which, especially the {Isatis tinctoria}, yield a blue dye similar to indigo; woad.
Isatis n : Old World genus of annual to perennial herbs: woad [syn: {genus Isatis}]