Erysimum crepidifolium, the pale wallflower, is a plant species in the crucifer family, Brassicaceae.

[1] Erysimum crepidifolium is an annual to short-lived perennial herbaceous plant that has upright stems, reaching a height of up to 60 cm.

Erysimum crepidifolium grows in dry meadows, preferring warm, rocky soils.

[2] The species occurs naturally from the Balkans and Italy[6] to southern and central Germany.

However, it is uncommon in Germany, where it is found most frequently in the middle Saale and Nahe river valleys.

[10] Like most members of the genus Erysimum, E. crepidifolium contains both cardiac glycosides (cardenolides),[11][12][13] and glucosinolates.

[15][17] Due to its close phylogenetic relationship with the well-studied model plant species Arabidopsis thaliana, E. crepidifolium has been proposed as a suitable system for investigating the cardenolide biosynthetic pathway.

[20] Successful propagation of E. crepidifolium as shoot cultures allows the production of uniform plant material for in vitro assays.