This document provides an overview of the plant life found in the Sierra de Guadarrama mountain range. It discusses the main tree species which include juniper, holm oak, pine, and ash. Common bush plants are rockrose and other small shrubs. Herb plants such as rosemary, thyme, and others are mentioned. Photos of the juniper, holm oak, pine, ash, and oak trees are shown to illustrate the varieties of plants in the Sierra de Guadarrama.