595–602 Within the Las Cañadas caldera and at higher altitudes, plant species endemic to the Teide National Park include: the Teide white broom (Spartocytisus supranubius), which has white flowers; Descurainia bourgaeana, a shrubby crucifer with yellow flowers; the Canary Island wallflower (Erysimum scoparium), which has violet flowers; and the Teide bugloss (Echium wildpretii), whose red flowers form a pyramid up to 3 meters in height.