To Top


Amanita muscariaFungi play an essential role in the ecological functioning of forests. Most of them are saprophytic species that act by breaking down the plant and animal organic matter and enriching the soil and incorporating nutrients into the food chain. Others are symbionts and are associated with the roots of certain plants form mycorrhizae, allowing these vegetables to live in certain media, such as poor or waterlogged. Therefore, the conservation of fungi is essential for the preservation of forests and their own habitats.

In spring and, especially, in autumn, fruit bodies (mushrooms) of all shapes and as colorful as possible, grow into the slopes of the Sierra de Guadarrama. However, it should be kept in mind that the collection of fungi is subject to specific regulations.

The saprophytic fungi are more abundant in the forests than in other habitats, as result of these environments optimum ecological conditions. in relation to their physiological requirements. In the National Park and its peripheral area, there is an important forest area with masses of different species trees, then the presence and the variety of these fungi is important.

Throughout the year, most of the fungi groups develop in the pine forests of Scots pine (Pinus sylvestris), which are dominant forest mass in the Park. The most well-known and abundant belong to the groups forming “mushroom” bodies (Ascomycota and Basidiomycota), producing spores. During the spring appear, among others, species of the genus Gyromitra and Morchella. The summer, if conditions have been favorable, is time to grow for species in the genera Russula and Boletus. In autumn the diversity is maximum, with species from a wide range of groups, some of them very showy, among which we might emphasize Amanita muscaria, Amanita rubescens, Boletus edulis, Boletus pinophilus, Clitocybe odora, Fomitopsis pinicola, Lactarius aurantiacus, Lactarius deliciosus Lycoperdum perlatum, Mycena seynii, Ramaria formosa, Russula spp., Sarcodon imbricatus, Sparassis crispa, Suillus luteus, etc. but we can also observe fungi of these groups very striking that do not make mushrooms, as Tremella mesenterica, or some other groups very different in terms of phylogenetics, although traditionally studied next to fungi, such as the mixomicetes Lycogala epidendrum and Leocarpus fragilis.

In the Pyrenean oak groves and the mixed forests with Albar pine, grow some of the above species, in addition to Amanita citrina, Amanita phalloides, Boletus aereus, Entolom alividum, Laetiporus sulphureus, Macrolepiota procera, etc.

The National Park has other very interesting forest habitats. One of them is the birch (Betula pubescens subsp. Celtiberian) woods, where has been detected the presence of a unique set of species of fungi (Leccinum scabrum, Lactarius torminosus, Lactarius necator, Piptoporus betulinus, etc.). In addition, there are other enclaves more clear in the forests in lower areas, where they develop certain heliophilous species that form the famous "witches circles", which are circles of edible fungi.

More about nature


The Sierra de Guadarrama has a high richness of amphibian species.

Exceptional trees

Magnificent specimens of different species with exceptional characteristics.

The Sierra de Guadarrama Climate

Description of the climatology of the national park.


The little-known fauna of the Sierra de Guadarrama.

Sierra de Guadarrama Rivers

Mountain rivers and streams are an essential feature of the national park.


Information on the reptiles of the Sierra de Guadarrama, some of them very little known.

Sistema de observación meteorológica

×* There is no translation available.* El parque nacional cuenta con una red de estaciones meteorológicas de alta montaña.

Estado del tiempo

×* There is no translation available.* Boletín de las últimas 48h, previsión del peligro de aludes (si está en vigor) y predicción meteorológica.


Dozens of species growing on trees, on rocks, covering the ground.....


Dozens of bird species fly the skies of the Sierra, including some of the most emblematic species of the national park.


Around 1680 species and subspecies of plants inhabit the national park.


Dozens of mammal species inhabit the Sierra de Guadarrama.

Peñalara: glaciology and glacial vestiges

The best glacial remains of Sierra de Guadarrama

Peñalara Massif wetlands

The Peñalara Massif is the site with the highest concentration of high mountain lakes and ponds in the Sierra de Guadarrama.

Geology and Lithology

Rock types and geological history of the Sierra de Guadarrama.

La Pedriza: a particular granite batholith

La Pedriza is a singular mountain relief, unique in the Iberian Peninsula.


Fungi play a fundamental role in the ecology of the Sierra de Guadarrama.


The species that inhabit the mountain rivers, some of them unfortunately introduced.

Vegetation and Natural Systems

Get to know the vegetation of the national park, with 8 natural systems represented.

Creative Commons Parque Nacional de la Sierra de Guadarrama Creative Commons | GDPR | Cookies | Mapa Web | Intranet

Information cookies

Cookies are short reports that are sent and stored on the hard drive of the user's computer through your browser when it connects to a web. Cookies can be used to collect and store user data while connected to provide you the requested services and sometimes tend not to keep. Cookies can be themselves or others.

There are several types of cookies:

  • Technical cookies that facilitate user navigation and use of the various options or services offered by the web as identify the session, allow access to certain areas, facilitate orders, purchases, filling out forms, registration, security, facilitating functionalities (videos, social networks, etc..).
  • Customization cookies that allow users to access services according to their preferences (language, browser, configuration, etc..).
  • Analytical cookies which allow anonymous analysis of the behavior of web users and allow to measure user activity and develop navigation profiles in order to improve the websites.

So when you access our website, in compliance with Article 22 of Law 34/2002 of the Information Society Services, in the analytical cookies treatment, we have requested your consent to their use. All of this is to improve our services. We use Google Analytics to collect anonymous statistical information such as the number of visitors to our site. Cookies added by Google Analytics are governed by the privacy policies of Google Analytics. If you want you can disable cookies from Google Analytics.

However, please note that you can enable or disable cookies by following the instructions of your browser.