Ralf Batravil A

Leuba, it looks like entoloma. I just saw another one similar at yours.
http://www.bcrc.firdi.org.tw/fungi/funga...

Good research. All to know about this mushroom.

The fly agaric is a remarkable mushroom in many respects; these are its bearing, history, chemical components and the poisoning that it provokes when consumed. The ‘pantherina’ poisoning syndrome is characterized by central nervous system dysfunction. The main species responsible are Amanita muscaria and A. pantherina (Amanitaceae); however, some other species of the genus have been suspected for similar actions. Ibotenic acid and muscimol are the active components, and probably, some other substances detected in the latter species participate in the psychotropic effects. The use of the mushroom started in ancient times and is connected with mysticism. Current knowledge on the chemistry, toxicology, and biology relating to this mushroom is reviewed, together with distinctive features concerning this unique species.
Bibliography:
Didier MICHELOT and Leda Maria MELENDEZ-HOWELL (2003). Amanita muscaria: chemistry, biology, toxicology, and ethnomycology. Mycological Research, 107, pp 131-146. doi:10.1017/S0953756203007305.

Cet entolome se caractérise par son chapeau blanchâtre puis gris brunâtre pâle, grisâtre-rosâtre à tan crème, ses lames sinuées, son pied blanchâtre à concolore au chapeau, sa saveur de bois ou amère, sa sporée brun rosâtre, ses spores allongées-anguleuses, son pileipellis trichodermique palissadique, ses boucles absentes et sa pousse dans les chênaies et hêtraies.
E. albinellum a des basidiomes plus petits, des spores différentes, de rares cheilocystides et un pileipellis trichodermique. Les anciennes espèces du genre Alboleptonia ont un pileipellis en cutis et des boucles rares à dispersées. E. rhodopolium diffère par son chapeau plus foncé, souvent irrégulier, ses lames adnées à émarginées et son pileipellis en cutis..

http://www.mycoquebec.org/bas.php?post=E...

Este hongo no es comestible.

With its bright red, sometimes dinner plate-sized caps, Amanita muscaria is one of the most striking of all mushrooms. The white warts that adorn the cap, white gills, well developed ring and distinctive volva of concentric rings separate the Fly Agaric from all other red mushrooms. There are several color varieties of A. muscaria in the U.S. ranging from red to orange, yellow and white, but only two occur commonly in the Bay Area, Amanita muscaria var. muscaria with a red cap and white warts, and A. muscaria var. flavivolvata, with a red cap and yellowish warts. Photo at top is variety flavivolvata.
http://www.mykoweb.com/CAF/species/Amani...

Without a doubt, this is one of the most striking agarics seen anywhere. When fresh and moist, the intense blue color really stands out; even the latex is blue. Found throughout eastern North America, it is distributed south to southern Colombia where it is associated with Quercus humboldtii. Associates in Costa Rica include Q. seemannii, Q. copeyensis, Q. oocarpa, Q. oleoides, Q. corrugata and Q. costaricensis. There is a form (or perhaps a distinct taxon), found near Palo Verde in the northern Talamancas, that has narrow crowded lamellae, an azonate pileus and smaller stature (image at lower left). This Lactarius is another example of the North Temperate heritage of mycorrhizal agarics in neotropical oak forests.
http://www.nybg.org/bsci/res/hall/indigo...

They are also known as polypores(many pores) cause the spore producing cells line pores. This form is a particularity, allowed them to be different from other mushrooms. Woody shelves may be several years old, they add a new layer of spore tissue every growing season. The new one covers the old ones.
And also, shelf fungi are used as herbal medicines.
http://herbarium.usu.edu/fungi/funfacts/...

They are also called "bracket fungus". Shelf fungi are found commonly on trees or fallen logs in damp woodlands. They can cause serious damege lumber and stands of timber.
http://www.britannica.com/science/shelf-...