Aegean wallflower

Description:

Erysimum cheiri is a species of flowering plant in the family Brassicaceae, native to Europe but widespread as an introduced species elsewhere. It is also widely cultivated as a garden plant. This is an herbaceous perennial, often grown as a biennial, with one or more highly branching stems reaching heights of 15–80 cm. The leaves are generally narrow and pointed and may be up to 20 cm long. The top of the stem is occupied by a club-shaped inflorescence of strongly scented flowers. Each flower has purplish-green sepals and rounded petals which are two to three centimeters long and in shades of bright yellows to reds and purples. The flowers fall away to leave long fruits which are narrow, hairy siliques several centimeters in length.

Habitat:

Erysimum cheiri can be found near coastal areas and urban areas and usually occurs on walls, cliffs and rocks.

Notes:

On the 2013 Dutch red list of plant species Erysimum cheiri was listed as an critically endangered species. However in 2014 this species was successfully reintroduced in multiple locations in Deventer. One of these locations is on the remains of the old city walls as shown in my pictures. Spotted in urban area of Deventer, Holland. (sources:see reference)