Lenzites betulina

Birch Blättling ( Lenzites betulina )

The inedible birch Blättling ( Lenzites betulina, syn. Trametes betulina ) is a species of fungus in the family Stielporlingsverwandten ( Polyporaceae ). It is also called Birkentramete or birch Blätterporling. He looks similar to the Butterfly Tramete, but has fins instead of a porous layer. The fruiting bodies appear all year to lying Hardwood or deciduous tree stumps. The fungus is a common Holzzersetzer and Weißfäuleerreger.

• 6.1 Notes and references

Features

Macroscopic characteristics

The relatively flat, fan- shaped hats are 2-8 cm wide and 1-2 cm thick and are 2-5 cm far from the substrate. The tough leathery fruiting bodies sit sessile to the substrate and are semi-circular to kidney shaped and partly resupinat something. Often they overlap like roof tiles. The shaggy - up striegelig - tomentose hairy top is concentrically zoned, so that the fungus looks almost like a Butterfly Tramete. The ranges in color from pale cream beige over gray to dark brown, glossy zones are missing. By algae the top can be turned green.

On the bottom is the lamellig trained hymenophore. The corky - elastic, relatively remotely located and partially convoluted labyrinthine lamellae are arranged radially wide and up to 1 cm. They are more or less intermingled and often branched dichotomously. Their coloring ranges from pale yellow, through ocher -yellow to gray-brown. The spore powder is white. The whitish flesh is thick and resilient to corky, the smell and taste is unremarkable.

Microscopic characteristics

The cylindrical allantoic up, so sausage-shaped spores are inamyloid and smooth, and measure 4.5-6 × 2-3 microns.

Artabgrenzung

Through his striegelig - felted Hutoberseite Birch Blättling resembles a cursory consideration of the very Striegeligen Tramete ( Trametes hirsuta ), colorful zoned forms can also look very similar to the very common butterfly Tramete ( T. versicolor), but both types have at their round bottom tube mouths. Thin specimens of Humpback Tramete ( T. gibbosa ) may also be similar, especially since her hymenophore has very elongated and partially labyrinthine tubes. These are, however, much narrower and the hat surface is only feinsamtig. A certain similarity perhaps has the Zaunblättling ( Gloeophyllum sepiarium ). He has brown meat and a beautiful orange-yellow edge and also grows preferentially on coniferous wood.

Ecology

The Birch Blättling grows in sparse, premolars and deciduous and mixed deciduous forests, especially in sedge beech and hornbeam - oak forests, preferably in airy places in clearings in groves, sun-exposed forest and forest road edges and forest fringes, as well as on dry grasslands and in Park and gardens.

The fruiting bodies growing on dead trees, usually at stumps, rarely also on underlying strains in which the fungus is initial - up involved from the late to the Final Phase of the wood decomposition. Not infrequently he is associated with the similar butterfly Tramete. Contrary to what the name suggests, is, at least in Germany and Switzerland, the European beech by far the main host of Birch Blättlings, followed by oak and birch. However, the fungus is also, though rarely, on other deciduous trees in front.

The one-year, overwintering fruiting bodies can be found throughout the year. The sporulation begins when the annual maximum temperatures are exceeded and the mean daily temperature falls below 18 ° C. The Sporulationperiode takes about 7-8 months. The Hauptsporulationszeit is in the winter. Both the fruiting bodies, and the spores are quite resistant to the cold. The fungus is spread from the lowlands to the highlands, the highest locality is located in Switzerland at 1480 m.

Dissemination

The Birch Blättling is distributed almost worldwide and in North America (Canada, Mexico, United States), Central America (Costa Rica), South America (Peru ), Asia (Asia Minor, Iran, Siberia, Kamchatka, China, Mongolia, Japan, North Korea and South Korea ), North Africa (Morocco ), Africa ( South Africa ), Australia, New Zealand and Europe demonstrated, but in the Southern Hemisphere and in the tropics, the species is rare. In the Holarctic the fungus is submeridional to boreal widespread. The species seems to be spread throughout Europe only from Iceland and Albania, there is no evidence. On the Irish island, the species is very rare and there are few records by.

In Germany the Birch Blättling of Schleswig -Holstein and the seashores is widely used to into the Alps, alternating thinning and compression areas strong. At least as often seems to be the fungus in the Alpine countries, Switzerland, Liechtenstein and Austria.

Importance

The leathery to corky - tough fruiting bodies are not suitable for consumption. The Weißfäuleerreger is a common and important Holzzersetzer.

Swell

• Paul Kirk: Lenzites betulina. In: Species Fungorum. Accessed on 14 January 2014.
• Lenzites betulina. In: MycoBank.org. International Mycological Association, accessed on 14 January 2014 ( English).
• Karin Monday: Birch Blättling Lenzites betulina In the virtual mushroom book. In: Tintling.com. Accessed on 14 January 2014.