Russula claroflava

The Yellow Grey stem Russula ( Russula claroflava )

The Yellow gray handle or moor Russula ( Russula claroflava ) is a mushroom of the family of Täublingsverwandten. The Style epithet derives from the Latin " clarus " and " flava " from. The former means as much as "bright" or " clear" and " flava " means " yellow".

• 5.1 Outer systematics

• 7.1 Notes and references

Features

Macroscopic characteristics

This medium-sized member of the genus russulas has a lemon yellow to bright chrome yellow and 4-10 cm broad hat. The surface is greasy - sticky in humid weather, so often leaves or other plant remains are stuck to it. If dry, the hat skin is dull and lackluster. The Hutmitte of mature fruiting bodies is usually slightly depressed, the edge is serrated to sometimes furrowed with age. The hat skin can be removed up to half. The 4-10 cm high stem is white, straight and 1-2 cm thick. In young mushrooms of the stem is full and firm, at the age he is spongy and gray. The fins are pale ocher and bulged on a stick grown or almost free. All parts of the mushroom are aged or print out gray to blackish. The flesh is white and blackening in the cut. The smell is barely noticeable to fruity. The spore powder is pale ocher.

Microscopic characteristics

The spores are elliptical, 9-12 long and 7.5-10 microns wide, usually 1.5-2 microns longer than wide. The coarse up to 1 micron high, dense, spiny warts are connected to each other by numerous fine lines and form a fairly well-developed network. The basidia are 50-53 microns long and 11 microns wide. The bulbous or clavate cystidia are top obtuse or acute, 55-72 microns long and 7-9 microns wide, with or without a 1 micron long Appendikul. In Sulfovanillin the Zystiden color blue to a pink stalks.

The hat skin contains numerous long 3-4 microns wide Primordialhyphen. Primordialhyphen are more or less encrusted with crystal or droplet-like precipitates hyphae, which can be stained well with carbol fuchsin.

Artabgrenzung

The also edible Zitronentäubling can see the Yellow Grey stem Täubling very similar, so similar that the Yellow Grey stem Täubling was long only as a variety of Zitronentäublings. He is pale, the fins are whitish and taste mostly schärflich.

Ecology

The Yellow Grey stem Täubling appear from June to October, in high and intermediate marshes, heathland, black alder swamp forests and peat bogs. The fungus prefers moist or alternating wet, acidic and nutrient-poor sites. He gladly comes before near ponds and lakes. Often you can find him in Torfmoospolstern. Occasionally, he also happens to drier places. The typical Mykorrhizapartner are different birch species. The fungus goes but occasionally also a symbiosis with alder, ash, aspen and spruce.

Dissemination

The Yellow Grey stem Täubling is a Holarctic, temperat to boreal Art It comes in Northern Asia ( the Caucasus and Siberia), North America (Canada, USA, Mexico ) and Europe before. In southern Europe, he usually lacks in Eastern Europe, he is ( Belarus ) rare in the UK, North West and Central Europe, he comes scattered before, in Northern Europe ( Scandinavia, Estonia, Northern Russia) it is widespread and ranges in Sweden until well after Lapland.

In Germany the Yellow Grey stem Täubling comes irregularly scattered from the coast to the Alps. In northern Germany, he is regarded as characteristic species of birch fracture. In Germany the way through drainage of peatlands and pollution is high risk.

System

Outer systematics

The Yellow Grey stem Täubling is placed in the section Decolorantes.

Importance

The Yellow Grey stem Täubling is edible and is considered a good, mild - tasting edible mushroom.