Top 20 Most Common Mushrooms in Avignon

Tree lungwort is a green lichen that can be found in humid areas of North America, Europe, and Asia. It grows regularly on trees, rocks, and in urban areas rich with moss. It can be used as a dye. Animals may consume tree lungwort or use it as nesting material.

Hammered shield lichen is noted for its pollution tolerance. It is a widespread grey flat lichen that is mostly found upon tree bark and occasionally rocks. Hammered shield lichen is named for the depressions within the lobe which give it a hammered appearance.

Common orange lichen was selected in 2006 by the United States Department of Energy as a model for genomic sequencing. Its widespread dispersal and bright yellow-orange color give the lichen its common name. It is primarily found growing on rocks, walls, and tree bark.

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.

Lecidella elaeochroma is a crust lichen, which means that its stock (Thallus) lies closely on the surface. The camp is whitish, gray, gray-green, olive or yellowish. Often it is also damaged by snail-eating and then greenish. The structure of the camp is smooth to grainy. Often it is weakly glossy or even limited by a black submission. The camp can sometimes be sorediös dissolved. It reaches diameter of 1 to 3 cm. The apothecia reach between 0.4 and 1.0 mm in diameter. Their discs are black to dark reddish brown and very rarely frosted. The Apotheciens are flat to strongly arched and can be deformed. Its edge is black and smooth. Overall, the appearance of this lichens is very rich in form.

The common greenshield lichen is a familiar species in temperate forests around the world. It can be found growing on rock outcroppings and trees in a wide variety of habitats. Individuals can grow to be quite large and may be gregarious, forming large mats or sheets on suitable surfaces. Like other lichens, the common greenshield lichen will shrivel and harden when moisture is scarce.

Evernia prunastri grows shrubby on trees. The yellow-green lichen grows up to 10 cm. It consists of up to five millimeters wide shrubby branched bands with a light underside. At the edges of these open dusty (Sorale). Apothecias (with shiny brown disc) are rarely formed.