Top 20 Most Common Mushrooms in Avila

The barometer earthstar (Astraeus hygrometricus) is a fascinating species that closely resembles earthstars of the genus Geastrum, even though it is only distantly related. The petal-like appendages of the fruitbody open, or "bloom", in response to changes in ambient moisture levels. When its fronds are contracted, the mushroom resembles a puffball. The species range is believed to be restricted to Mediterranean Europe.

The blewit mushroom grows in fallen leaves in autumn and winter, sometimes appearing in ‘fairy ring’ circles. It can be used to make a green dye when chopped and boiled in an iron pot. The scientific name, Lepista nuda, derives from Latin words meaning “bare goblet,” a reference to the shape and texture of the mushroom.

The shaggy mane mushroom is commonly found in North American and European grasslands. Some peoples foraged for its young egg-shaped caps, but it has more recently been found to be a bioaccumulator of heavy metals, meaning it pulls toxic metals up from the soil where it grows. As a result, shaggy manes should not be eaten. The mushrooms usually appear in clusters or “fairy rings.”

The golden ear can be encountered in an unusual time of the year – winter. It is considered a parasitic fungus, as it tends to grow on the fruiting body of other fungi, particularly the Hairy Curtain Crust (Stereum hirsutum). When wet, the golden ear has a gelatinous structure, but in dry weather, it becomes tougher and crust-like.

This bracket fungus clings to the sides of infected trees, presenting a moist and somewhat puffy appearance when young. The fuzzy surface of the shaggy bracket (Inonotus hispidus) distinguishes it from similar fungi. This white-rot-causing fungus may not be good to eat, but it can be dried and used as kindling for fires.

Found in clearings and grassy areas in late summer, the wild parasol mushroom has a snakeskin-patterned stem. The brown spots on its cap make it look a bit shaggy, but that name is reserved for its poisonous counterpart, the Shaggy Parasol (Chlorophyllum rhacodes). You can distinguish the two by the stems: the latter has a smooth stem and red flesh inside.

Pseudevernia furfuracea is associated with photobionts from the green algae genus Trebouxia. It reproduces asexually by isidia. The ontogeny of isidia development and its role in CO2 gas exchange in P. furfuracea has been investigated. The preferred growing surfaces for P. furfuracea are the so-called "nutrient poor" bark trees, including birch, pine and spruce. The species has two morphologically identical varieties that are distinguished by the secondary metabolites they produce: var. ceratea Zopf. produces olivetoric acid and other physodic acids, while var. furfuracea produces physodic but not olivetoric acid. Some authors (e.g., Hale 1968) have separated the chemotypes at the species level, designating the olivetoric acid-containing specimens as Pseudevernia olivetorina, but more recent literature separates them at the varietal level.

The distinctive jelly ear grows mainly through winter and spring, mostly on the dead trunks and branches of elder trees. It occurs around the world and is often cooked into dishes in Asian countries. This ear-shaped jelly mushroom is often available in stores both fresh and dried.