Prunus Lusitanica Angustifolia. Irrespective of its origin it belongs to the hardiest evergreen plants. Prunus lusitanica, the portugal laurel, is a species of flowering plant in the rose family rosaceae, native to southwestern france, spain, portugal, morocco, and macaronesia. Prunus lusitanica 'angustifolia' has traditional qualities to it that are similar to bay laurel, making it an ideal prunus lusitanica is easy to grow in all soil conditions and situations including dry shade.