Inocybe hystrix
Encyclopedia
Inocybe hystrix is an agaric
Agaric
An agaric is a type of fungal fruiting body characterized by the presence of a pileus that is clearly differentiated from the stipe , with lamellae on the underside of the pileus. "Agaric" can also refer to a basidiomycete species characterized by an agaric-type fruiting body...

 which forms mycorrhiza
Mycorrhiza
A mycorrhiza is a symbiotic association between a fungus and the roots of a vascular plant....

 with surrounding deciduous
Deciduous
Deciduous means "falling off at maturity" or "tending to fall off", and is typically used in reference to trees or shrubs that lose their leaves seasonally, and to the shedding of other plant structures such as petals after flowering or fruit when ripe...

 trees. It is usually found growing alone or in small groups on leaf litter during autumn months. Unlike many Inocybe
Inocybe
Inocybe is a large, complex genus of mushrooms. Members of Inocybe are mycorrhizal, and some evidence shows that the high degree of speciation in the genus is due to adaptation to different trees and perhaps even local environments.-Description:...

species, Inocybe hystrix is densely covered in brown scales, a characteristic that aids in identification. The mushroom also has a spermatic odor that is especially noticeable when the mushroom is damaged or crushed.

Like many other Inocybe mushrooms, Inocybe hystrix contains dangerous amounts of muscarine
Muscarine
Muscarine, L--muscarine, or muscarin is a natural product found in certain mushrooms, particularly in Inocybe and Clitocybe species, such as the deadly C. dealbata. Mushrooms in the genera Entoloma and Mycena have also been found to contain levels of muscarine which can be dangerous if ingested...

 and should not be consumed.

Taxonomy

The species was first described in 1838 by Elias Fries under the name Agaricus hystrix. Finnish mycologist Petter Karsten later (1879) transferred it to Inocybe.

Habitat and distribution

Inocybe hystrix is found in North America and Europe, where it grows in deciduous forest, especially beech
Beech
Beech is a genus of ten species of deciduous trees in the family Fagaceae, native to temperate Europe, Asia and North America.-Habit:...

.

See also

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