Erysimum decumbens (Schleich. ex Willd.) Dennst. Dataset Update on the Brassicaceae Species Checklist Rank SPECIES Published in Dennstedt, A.W. Hort. Belved. 1: 38. (1820). Classification family Brassicaceae genus Erysimum species Erysimum humile Name Homonyms Erysimum decumbens (Schleich. ex Willd.) Dennst.