Оранжево-коричневая поганка (Amanita fulva)

Species of fungus

Amanita fulva, commonly called the tawny grisette or the orange brown ringless amanita, is a basidiomycete mushroom of the genus Amanita. It is found frequently in deciduous and coniferous forests of Europe, and possibly North America.

Amanita fulva was first described by Jacob Christian Schäffer in 1774. The gills are free, close, and broad. The flesh is white to cream. The stem or stipe is white and smooth or powdery, sometimes tinged with orange brown and with very fine hairs. It is slender, ringless, hollow and quite fragile, tapering towards the top; up to 15 cm tall and 1–1.5 cm in thickness. The universal veil which initially encapsulates the fruiting body is torn and develops into a white, sack like volva with characteristic rusty brown blemishes. The cap is usually free of volval remnants. Infrequently, roughly polygonal pieces of the veil may remain on the surface. The spores are white, 9 × 12 μm or (9.0 ) 10.0 12.5 ( 19.3) x (8.2 ) 9.3 12.0 ( 15.5) μm in size, globose; nonamyloid.

Amanita fulva, distributed throughout Europe, occurs in a variety of forests. It is generally found with oak (Quercus), birch (Betula), spruce (Picea), pine (Pinus), chestnut (Castanea) and alder (Alnus), with which it forms mycorrhizae. It is often found with birch in Scandinavia, while collections from southern Europe are usually from forests of oak, chestnut and pine. It grows in acidic soils and fruits from summer to late autumn (May to November in the UK). It is a common to scarce fungus, and is very common in Britain. Amanita fulva is considered to be widely distributed in North America in deciduous and coniferous forests, although collections could possibly be of a different, yet undescribed species. In addition, the name Amanita fulva has in the past been misapplied to other North American taxa, such as A. amerifulva and others. Some authors indicate the fungus is potentially toxic when raw, and is suitable for consumption only when cooked.