Forests of Canary Island Pine (Pinus canariensis) with Canary Island juniper (Juniperus cedrus) occur from , covering the middle slopes of the volcano and reaching an alpine tree line lower than that of continental mountains at similar latitudes. 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 in height. The Teide daisy (Argyranthemum teneriffae) can be found at altitudes close to above sea level, and the Teide violet (Viola cheiranthifolia) can be found right up to the summit, making it the highest flowering plant in Spain.