The western and central portions are more rainy .
The western and central portions are covered in forests of Atlas cedar , cork oak and holm oak , as well as the only remaining forests of Moroccan fir , a subspecies of the Spanish fir .
The western and central portions are more rainy and are covered in forests of Atlas cedar , cork oak and holm oak , as well as the only remaining forests of Moroccan fir , a subspecies of the Spanish fir .