Family Code: BRASSI Genus Code: DESCU Genus CN: tansymustard Genus Authority: Webb & Bethel. Genus Summary: A genus of ca. 40 species, primarily of North and South America. Genus References: Goodson & Al-Shehbaz in FNA (2010); Rollins (1993)=Z, Al-Shehbaz (1988b)=Y; Detling (1939)=X. Last Updated: 2019-11-29 Publish: 1