Editing Erysimum (section)

==Morphology==
Wallflowers are [[annual plant|annual]]s, [[herbaceous plant|herbaceous]] [[perennial plant|perennial]]s or [[sub-shrub]]s. The perennial species are short-lived and in cultivation treated as [[biennial plant|biennials]]. Most species have stems erect, with a covering of bifid hairs, usually 25 ± 53cm × 2–3mm in size. The leaves are narrow and fixed. The lower leaves are broad and round with backwardly directed lobes,  50–80mm × 0.5–3mm. Stem leaves are linear, entire, growing whitish with 2-fid hairs; 21–43mm × 1.5–2mm. [[Inflorescence|Flower cluster]]s grow at intervals on short equal stalks along the stem, with bright yellow to red or pink bilateral  [[flower]]s. Flowering occurs during spring and summer. One species, ''[[Erysimum semperflorens]]'', [[native plant|native]] to Morocco and Algeria, has white flowers. The flowering part of the stem ranges from 4 to 7mm. There are four pouch-shaped [[sepal]]s, light green, 5–7mm × 1.5–2mm.