|Amanita virosa (Fr.) Bertill.|
The cap is white, ochre at the centre, with a central umbo; its margin is smooth. The cap surface is smooth.The stem is white, with fluffy surface, bulbous, with a white sheathing volva, and a fragile ring. The flesh is unchanging; its taste is mild; the odour is faint, of radish or yeast, then fetid for old specimens; its texture is fibrous. The gills are white, free, crowded . The spore print is white. This species is mycorrhizal. It grows on the ground, in coniferous (sometimes deciduous) woods, on a rather acid soil, with beech, fir, spruce, pine, blueberry tree. The fruiting period takes place from June to November.
Chemical tests : flesh becoming yellow when in contact with potash (KOH).
Distinctive features : entirely white; sheathing sac-shaped volva at stem base; bell-shaped cap then with a broad umbo; stem with shaggy surface and with a fragile ring sometimes still attached to cap margin; flesh turns golden yellow when in contact with caustic soda; with conifers
Amanita virosa is quite rare and localised in the forest of Rambouillet, and is infrequent, more generally speaking .
page updated on 14/01/18