sentences:  They prefer siliceous soil and, as altitude increases, they replace the damp oak forests and cork oak; on the high ground they give way to Scots pine ("Pinus sylvestris") forests or to "los piornales serranos" with creeping juniper.In areas where the influence of the Atlantic is more evident, they are taken over by heather and "Erica australis"; in the remainder, in clearings and in more degraded phases, rock rose ("Cistaceae") mixed with laurel leaf and Spanish lavender ("Lavandula stoechas") is more frequent.Their natural range is usually covered by forests of Scots pine or maritime pine.