Poisonous Mushrooms

Poisonous Mushrooms

Below is a list of poisonous mushrooms. By no means they are comprehensive. This is also not an identification guide. Kindly get assistance from your field guide for any further queries.

Agaricus xanthrodermis

This species is often mistaken for the meadow mushroom (Agaricus campestris) however, the yellow stain in the stipe base is not present in the meadow mushroom. This species causes mild to severe gastric upset. It commonly grows in lawns the same as the meadow mushroom.

Amanita muscaria

A colorful red capped species with white or buff patches on the pileus contains muscimol which causes stomach upset, drowsiness, vomiting and loss of coordination and can also be hallucinogenic almost like intoxication. Some strains also contain muscarin. Hospitalization can result but is not fatal unless someone already has health problems. It fruits around pine and other tree species and is widely distributed.

Amanita virosa

This pure white species with its deep membranous volva (cup surrounding the base) is deadly poisonous. It contains the cyclopeptide amanitin which kills liver cells and without a liver transplant is often fatal. It is found associated with oak in Eastern North America. However, Amanita ocreata, a sister species, and just as deadly is found under oak in California and the west coast.

Chalciporus piperatus

A very bitter tasting bolete with cinnamon colored pores could cause severe gastric upset. However, the bitter taste usually rules out eating it. It is found associated with conifers or northern hardwood stands.

Chlorophyllum molybdites

The toxin creates severe gastrointestinal upset over several hours. The green spore print and growth in a fairy ring clearly separates this species from the look alike edible species of Macrolepiota which have a white spore print. It forms fairy rings in lawns, meadows, and grassy areas and is one of the most frequently mistaken for an edible mushroom.

Galerina autumnalis

his small brown mushroom which grows on wood is deadly poisonous. The presence of the cyclopeptide amanitin kills liver cells and like Amanita virosa can be fatal. The need for a liver transplant is often essential to save a person’s life. It is found in woodlands throughout North America.

Hebeloma crustulinaforme

Severe gastric upset, even requiring hospitalization, can result from ingestion of this species. Recovery is usually complete in a day or two. It can be found is yards under hardwood and conifer trees or in the forest everywhere

Inocybe lacera

A large number, if not all, of species of Inocybe contain the toxin muscarin. Usual symptoms include excessive salvia, tears, and sweating combined with vomiting and/or diarrhea. Recovery is usually achieved after two or three days. The species of Inocybe are associated with hardwood and conifer trees and widely distributed.

Psilocybe cubensis

This species contains psilocybin and psilosin hallucinogenic toxins. The possession of which is against the law. The blue stains on the stipe and pileus are highly correlated with the presence of the toxins. Recovery is usually complete except in young children or excessive use. The fruiting body as well as the spawn both contain the toxins but the spawn slowly loose toxins on storage. Usually found on cow or horse dung in warm southern climates

Back to Top