Descurainia bourgaeana

Descurainia bourgaeana (hierba pajonera or flixweed) is a species of flowering plant in the family Brassicaceae endemic to Las Cañadas del Teide on Tenerife and La Palma in the Canary Islands.
"Descurainia bourgaeana" grows as shrubby clumps about 1 metre in height with yellow flowers.