Jan 26, 2013

Gymnopilus junonius

Gymnopilus junonius is a species of mushroom in the family Cortinariaceae. Commonly known as laughing gym, laughing Jim, or the spectacular rustgill, this large orange mushroom is typically found growing on tree stumps, logs, or tree bases. Some subspecies of this mushroom contain the hallucinogenic compound psilocybin.

This species was formerly known as Gymnopilus spectabilis, or Pholiota spectabilis v. junonia (Fr.) J.E Lange. The ‘Gymn’ in the present nomen means ‘naked’, and ‘Juno’ was the wife of Jupiter. In Korea, this mushroom is called Hwanggalsaek Michigwang-i Beoseot, which translates to “bronze clown mushroom”.

The cap ranges from 7 to 20 cm across, is convex, and is bright orange, orange/brown, or reddish brown with a dry scaly surface. The stem is 25 to 265 mm long, 8 to 9 mm thick, and often narrows near the base. The frail ring is dusted with rusty orange spores, the flesh is yellow and the gill attachment to the stem is adnate to sub-decurrent. It has a bitter taste, stains red with KOH and turns green when cooked in a pan. The spore print is rusty orange. “Each individual mushroom can weigh several pounds.”

Similar species

This mushroom is often mistaken for Gymnopilus ventricosus, which contains no psilocybin.

This mushroom has subspecies which contain the hallucinogen psilocybin. Specimens found in Korea or the eastern part of US are more likely to contain psilocybin than similar mushrooms found in the western part of the US or Europe. This mushroom contains bis-noryangonin and hispidine, which are structurally related to alpha-pyrones found in kava.

Source: Wikipedia.org

  1. patval81 says:

    some one knows if this mushroom could kill you ? i have meny and i want to eat them

  2. sampioen says:

    Yes, it is a woodlover(saprophyte) and it is found on fallen trees and tree stumps.

  3. KentuckyFriendChicken says:

    1. Is it a “Wood Lover” strain?
    2. Is it certain that “adult” form of this mushroom contains Psilocybin?

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