Suillus viscidus

Grey larch boletus ( Suillus viscidus )

The Grey larch boletus ( Suillus viscidus ) is a mushroom of the family of Schmierröhrlingsverwandten. He is particularly common on calcareous soils and strongly bound to larch, which it owes its German name.

Features

Macroscopic characteristics

The hat of the Grey larch Röhrlings is four to twelve inches wide. At first he is hemispherical convex, later expanded. He is gray - greenish to brown - yellowish and covered with a rough, typical for the lubricating boletes and greasy skin. In young mushrooms it is connected to the handle through a white-gray veil, which still remains as Velumreste the brim later. The gray - white, later dark gray tubes are eight to twelve millimeters long, grown on a stick and mostly decurrent. The fungus has wide and square pores, which are extended in age at the brim down. They are gray- white, later dirty gray color, slightly dark on pressure. The spore powder is tobacco. The cylindrical, fleshy and slightly slimy stalk is up to seven inches long and has about the same color as the hat. The ring at the base is thin and white, but quickly becomes gray - brown. The Grey larch Röhrling first a solid, but later a soft flesh that is yellowish, otherwise greyish colored in the stem. On average, it hardly stained by and at most shows a slight bluish tone. The smell is reminiscent of fruit, the taste is mild and fruity.

Microscopic characteristics

The spindle-shaped spores are 8 to 14 to 3 to 5 microns in size.

Artabgrenzung

The Grey Larch Boletus resembles primarily for other lubricating boletes. Most likely he is ( bresadolae Suillus ) with the yellow-fleshed Larch Boletus be confused, but has a maroon cap and yellow flesh.

Ecology

Like other mushrooms of this genus Suillus viscidus forms mycorrhizae with a specific conifer, in this case with larch. It also requires calcareous soils, preferably Alpine to subalpine areas in which he fruktifiziert July to October. The occurrence is usually not very dense.

Dissemination

The distribution of the Grey Lärchenröhrlings includes Europe, Russia and North America, preferably montane locations such as the Alps and their foothills.

System

Some mycologists, particularly in North America, the gray larch boletus is placed in a separate genus Fuscoboletinus due to its different colored spore powder.

The following forms or varieties have been described:

• Suillus viscidus f obscurus ( Kuhner ) Armada (2009)
• Suillus viscidus var bresadolae ( Quél. ) Bon (1988 )
• Suillus viscidus var viscidus (L.) Roussel (1796 )

Importance

The Grey Larch Boletus is a mediocre edible mushroom, which is suitable as a mixed mushroom.