''Erysimum repandum'' is a species of ''

Erysimum ''Erysimum'', or wallflower, is a genus of flowering plants in the cabbage family, Brassicaceae. It includes more than 150 species, both popular garden plants and many wild forms. The genus ''Cheiranthus'' is sometimes included here in whole o ...

'' known by several common names, including spreading wallflower, spreading treacle-mustard, and bushy wallflower. It is native to Eurasia, but it is known in many other parts of the world as an

introduced species An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there ...

and a common roadside weed. ''Erysimum repandum'' is an annual herb growing up to about high. The leaves at the base of the stem are widely lance-shaped, bumpy or toothed along the edges, and up to long. The leaves farther up the stem are shorter, narrower, and more shallowly lobed or unlobed. The top of the stem is occupied by a

raceme A raceme ( or ) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the s ...

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

of many yellow flowers. The fruit is a silique up to long.

References

External links

Jepson Manual Treatment
repandum Flora of Asia Flora of Lebanon {{Brassicales-stub