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Poisonous Mushrooms

Here is a list of poisonous mushrooms, of which the lethally poisonous mushrooms are listed first. Anyone gathering mushrooms to cook and eat needs to be able to identify at least the deadly poisonous mushrooms. Do not under any circumstances taste or eat of any of these mushrooms.

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Coprinopsis atramentaria   (Common Ink Cap)
Family
Psathyrellaceae
Location
North America, Europe
Dimensions
Cap 3-7 cm tall * variable diameter, stem 7-14 cm tall * 1-1.5 cm thick
Edibility
Poisonous

Description
Coprinopsis atramentaria, commonly known as the common ink cap, inky cap or alcohol inky cap, is poisonous when combined with alcohol. It is a medium-sized conical agaric, that is greyish brownish, later blackening and dissolves itself in a black ink-like liquid at maturity. It grows generally in tufts, in fields, gardens and waste ground, near broad-leaf tree stumps or buried wood.

Cap egg-shaped, expanding to become slightly umbonate with age. The colour is gray to gray-brown. Flesh is white, hollow and medium in young specimens but soon discolors and deliqueces slowly from the margin. Gills free, extremely crowded and edged with white. Spores are black. Stem is white and smooth with fine, reddish brown fibrils at base.

Similar species Coprinus insignis has warty spores. Coprinus micaeus is smaller and more fragile. It granulates when young.

Coprinopsis atramentaria on the First Nature Web site.
Coprinopsis atramentaria on the MushroomExpert.Com Web site.
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Cortinarius semisanguineus   (Poison Dye Cort)
Family
Cortinariaceae
Location
North America, Europe
Dimensions
Cap 2-6 cm diameter, stem 2-10 cm tall * 0.4-1 cm thick
Edibility
Poisonous

Description
Cortinarius semisanguineus, also know as Poison Dye Cort, is a medium-sized mushroom with a pale brown to an ochre cap, and bright blood-red gills and yellowish stem. It grows typically with conifers and birch.

Cap olive- to dark reddish brown, convex to umbonate. Gills blood red, later more reddish rust and adnate, sinuate and fairly crowded. Spores are rusty brown. Stem usually same colour as the cap or paler, smooth, or finely fibrillose like the cap with threadlike remnants of veil. Stem flesh darker red-brown than cap flesh. The mushroom has no ring.

Cortinarius semisanguineus on the First Nature Web site.
Cortinarius semisanguineus on the MushroomExpert.Com Web site.
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Gyromitra infula   (Hooded false morel)
Family
Discinaceae
Location
North America, Europe
Dimensions
2-8 cm diameter, 2-13 cm tall, including stem
Edibility
Poisonous

Description
Gyromitra infula, also known as Hooded false morel, occurs in late summer and fall, not in the spring when other species of Gyromitra can be found. Its broadly lobed cap is usually pinched into two lobes, creating a saddle-shaped appearance. Its colour is variable.

Fruiting body occasionally nearly cup-shaped when young, but soon becoming lobed with two prominently raised lobes; bald; loosely wrinkled but usually not brainlike; varies in colour (tan to yellowish-brown to reddish-brown to dark brown); undersurface whitish to brownish, finely dusted, sometimes ingrown with stem where contact occurs. Stem equal to enlarged at the base, stuffed or hollow, round to compressed, sometimes with a longitudinal fold, surface glabrous to subpubescent, coloured like the cap or lighter.

Similar species include the deadly poisonous Gyromitra esculenta.

Gyromitra infula on the MushroomExpert.Com Web site.
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Hebeloma crustuliniforme   (Poison Pie)
Family
Bolbitiaceae
Location
North America, Europe
Dimensions
Cap 2-10 cm diameter, stem 4-7 cm tall * 1-2 cm thick
Edibility
Poisonous

Description
Hebeloma crustuliniforme, also known as Poison Pie, is a medium to large agaric with buff or tan, greasy cap, clay gills and a stoutish, pale stem. Young gills have watery droplets on the edges. It grows single to grouped, sometimes in fairy rings on soil under conifers or hardwoods. The mushroom is moderately poisonous.

Cap buff to pale tan, convex then umbonate with an inrolled cap margin until old. Gills pale grey-brown and exude droplets in moist conditions, adnate or adnexed, crowded. Spores are rust colored. Stem whitish, fairly stout, more or less equal, granular towards apex and the thick flesh is white. The mushroom has no ring.

Hebeloma crustuliniforme on the First Nature Web site.
Hebeloma crustuliniforme on the MushroomExpert.Com Web site.
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Hebeloma mesophaeum   (Veiled Poisonpie)
Family
Bolbitiaceae
Location
North America, Europe
Dimensions
Cap 2.5-4.5 cm diameter, stem 4-7 cm tall * 0.3-0.4 cm thick
Edibility
Poisonous

Description
Hebeloma mesophaeum, also known as Veiled Poisonpie, is a smallish agaric that has a convex to broadly umbonate grey-brown cap with a pale margin and pale brown stem. It grows solitary or in small groups on soil, mostly with conifers in late summer to autumn. The mushroom is moderately poisonous.

Cap dry, or slightly greasy, gray-brown, darker chocolate-brown toward center with pallid whitish margin decorated with fibrous velar remnants when young. Gills notched, medium spaced and pale brown coloured. Spores are rust colored. Flesh brownish, firm and stuffed. Stem pallid buff, becoming tinged brown with age, more or less equal, sometimes with a faint or more prominent ring zone.

Hebeloma mesophaeum on the First Nature Web site.
Hebeloma mesophaeum on the MushroomExpert.Com Web site.
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Hypholoma fasciculare   (Sulphur Tuft)
Family
Strophhariaceae
Location
North America, Europe
Dimensions
Cap 2-7 cm diameter, 4-10 cm tall * 0.5-1 cm diameter
Edibility
Poisonous

Description
Hypholoma fasciculare, also known as Sulphur Tuft Mushroom, is a medium-sized agaric whose main two characteristics is the greenish-yellow gills and a tendency to cluster on dead wood.

Cap convex, sulphur-yellow with darker orange center. It is expanded with age, smooth but with velar remnants attached to the margin. Flesh is sulphur-yellow, firm and moderate. Gills green sheen on greenish yellow to alove-brown, crowded, adnate. Stem is more or less similarly colored as the cap, but it is darker brown towards the base. Ring is zone-like, faint, and with maturity same color as spores.

Hypholoma fasciculare on the First Nature Web site.
Hypholoma fasciculare on the MushroomExpert.Com Web site.
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Inocybe lacera   (Torn-cap Inocybe)
Family
Cortinariaceae
Location
North America, Europe
Dimensions
Cap 1-4 cm diameter, stem 2-4 cm tall * 0.2-0.5 cm thick
Edibility
Poisonous

Description
Inocybe lacera, also know as Torn-cap Inocybe, is in appearance a typical "little brown mushroom", but specific features are very variable. It grows often on sandy soil with coniferous trees and on old moss-covered fire sites.

Cap snuff-brown, typically convex with a small umbo, fibrillose and scaley. The margin curves inwards and often splits. The flesh is whitish and unchanging. Gills are cream coloured in younger specimens, becoming grey-brown with whitish edges. They are notched at the margin or reach towards but are not attached to the stem. Spores are tobacco brown. Stem brown at the slightly bulbous base, but lighter towards the apex, and fibrillose. The mushroom has no ring.

Similar species Inocybe lanuginosa has a woollier stem and spores with nodules.

Inocybe lacera on the MushroomExpert.Com Web site.
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Lactarius helvus   (Poison Lactarius)
Family
Russulaceae
Location
North America, Europe
Dimensions
Cap 4-10 cm diameter; stem 3-6 cm tall * 1-2.3 cm diameter
Edibility
Poisonous

Description
Lactarius helvus, also known as Poison Lactarius, is a medium-sized or large agaric that has a spicy smell, similar to curry. It has a cinnamon-brown cap, buff gills and excluding colourless, transparent milk. It grows solitary or in scattered groups on the soil.

Cap velvety, initially slightly convex, becoming funnel-shaped as it matures and has a faint zonate (bull's-eye) pattern, beige or light grey at the margins and darkening toward the centre. Gills decurrent, first cream coloured, then darkening to ochre-yellow. The flesh is white or beige, often pink-tinged. Stem is similarly coloured like the cap or more reddish-brown, more or less equal. The mushroom has no ring.

Similar species Lactarius aquifluus is very similar in appearance and grows in North America.

Lactarius helvus on the MushroomExpert.Com Web site.
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WARNING

If you plan to collect fungi to be eaten, misidentified mushrooms can make you sick or kill you. Never eat a mushroom that you are not 100% sure is edible. Use many resources, and be skeptical of your own conclusions. Please consider that many mushrooms take years of experience to identify reliably.

The site takes no responsibility for damage caused by ingesting poisonous mushrooms. If you continue, you agree to view this website under these terms.