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Russula emetica: The sickener lactarorufin A, methoxyfuranalcohol, and R. emetica unnamed compound [39] North America, Europe, North Africa and Asia Russula aurea. Russula cyanoxantha. Russula subnigricans: unknown Sarcosphaera coronaria: Pink crown North America, Europe, North Africa and Asia Scleroderma citrinum: Common earthball unknown
Russula subnigricans is a poisonous mushroom, and has been responsible for mushroom poisoning in Taiwan and Japan. The effect is a serious one, rhabdomyolysis. The toxins responsible are the very unusual cycloprop-2-ene carboxylic acid (a toxic molecule consisting of only 10 atoms) and Russuphelin A (a heavily chlorinated polyphenolic).
Despite the difficulty in positively identifying collected specimens, the possibility to spot the toxic species by their acrid taste makes some of the mild species, such as R. cyanoxantha and R. vesca, popular edible mushrooms. Russula is mostly free of deadly poisonous species, and mild-tasting ones are all edible. [14] [failed verification]
Among toxic substances, Lactarius turpis contains the mutagenic alkaloid necatorin, [121] and the small compound cycloprop-2-ene carboxylic acid has been identified as the toxic agent in Russula subnigricans. [133] Some secondary metabolites showed antibiotic properties in laboratory tests. [128]
Although many people have a fear of mushroom poisoning by "toadstools", only a small number of the many macroscopic fruiting bodies commonly known as mushrooms and toadstools have proven fatal to humans. This list is not exhaustive and does not contain many fungi that, although not deadly, are still harmful.
Hypomyces lactifluorum, or the lobster mushroom, is a parasitic ascomycete fungus that grows on certain species of mushrooms, turning them a reddish orange color that resembles the outer shell of a cooked lobster. Contrary to its common name, the species itself is neither a mushroom nor a crustacean.
Russula emetica, commonly known as the sickener, emetic russula, or vomiting russula, is a basidiomycete mushroom, and the type species of the genus Russula. It has a red, convex to flat cap up to 8.5 cm (3.3 in) in diameter, with a cuticle that can be peeled off almost to the centre. The gills are white to pale cream, and closely spaced.
Russula aeruginea, also known as the grass-green russula, the tacky green russula, or the green russula, is an edible Russula mushroom. Widely distributed in northern temperate regions, it is usually found under birch, mostly in pine forests. The very poisonous death cap can have a similar appearance, especially from above.