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Erysimum crepidifolium, the pale wallflower, is a plant species in the crucifer family, Brassicaceae. It is a member of the genus Erysimum, which includes between 150 and 350 species in the Northern Hemisphere.
Like most members of the genus Erysimum, E. crepidifolium contains both cardiac glycosides (cardenolides), and glucosinolates.
All parts of E. crepidifolium are toxic due to their cardenolide content. There are at least 20 different cardenolides in the seeds, making up ~3.5% of the total mass. Among these, the most common are erysimoside (~2.3%) and its deglycosylated form helveticoside (0.5–1.2%). The highest concentrations of erysimoside and helveticoside are found during ripening and in drying seeds. Among 48 tested Erysimum species, E. crepidifolium had the highest cardenolide content in the leaves, at least three-fold higher than any of the other species.
Coast wallflower · Cascade wallflower · Western wallflower · Erysimum baeticum · Cape Verde Wallflower · Erysimum canescens · Sanddune wallflower · Erysimum cazorlense · Wormseed wallflower · Wallflower · Erysimum collinum · Bent Treacle Mustard
Text excerpted from the Wikipedia article Erysimum crepidifolium by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
