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Laricifomes officinalis is a wood-decay fungus in the order Polyporales. It causes brown heart rot on conifers, and is found in Europe, Asia, and North America, as well as Morocco. It is commonly known as agarikon, as well as the quinine conk due to its extremely bitter taste. DNA analysis supports L. officinalis as being distinct from the genus Fomitopsis. "The decay is common only in a few old-growth stands. The conks were once collected extensively for production of medicinal quinine.

The Incredible Fungus that Looks Like an Octopus ~ Image Credit Flickr User Jose Delgar

The largest living organism ever found has been discovered in an ancient American forest. The Armillaria ostoyae, popularly known as the honey mushroom, started from a single spore too small to see without a microscope. It has been spreading its black shoestring filaments, called rhizomorphs, through the forest for an estimated 2,400 years, killing trees as it grows. It now covers 2,200 acres (880 hectares) of the Malheur National Forest, in eastern Oregon.

Laccaria amethystina is commonly known as the Amethyst Deceiver.

Arizona. (Hydnellum peckii) Often called “The Bleeding Tooth mushroom” Hydnellum peckii is a hydnoid species, producing spores on the surface of vertical spines or tooth-like projections that hang from the underbelly of the main stalk It is found in North America, South America, Europe and was recently discovered in Iran. And you hardly need me to tell you this one but they are VERY deadly even to touch and 100% non-edible

Ascotremella faginea. A jelly-like Ascopmycete fungus which can be found growing, in North America, on well-rotted American Beech (Fagus grandifolia). Hocking State Forest, Ohio, USA.

Amanita bisporigera - a deadly poisonous species of mushroom in the Amanitaceae family. It is commonly known as the eastern North American destroying angel or the destroying angel.