Winter Stielporling

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Winter Stielporling
2012-01-29 Polyporus brumalis crop.jpg

Winter Stielporling ( Lentinus brumalis )

Systematics
Class : Agaricomycetes
Subclass : insecure position (incertae sedis)
Order : Stalk porlings (Polyporales)
Family : Stalk porling relatives (Polyporaceae)
Genre : Saw blades ( Lentinus )
Type : Winter Stielporling
Scientific name
Lentinus brumalis
(Pers.) Zmitr. (2010)

The winter stem porling or short winter porling ( Lentinus brumalis , syn. Polyporus brumalis ) is a type of fungus from the family of stem porling relatives . The fungus grows on dead hardwood and, as the name suggests, fructifies mainly in the winter months.

features

Winter stalk spores in the light microscope
The underside of the hat of the winter stem porling with the easily recognizable pores

Macroscopic features

The round hat has a diameter of 1.5 to 10 cm. It is broadly convex and sunken towards the middle. The surface is dry and less often hairy structured. The color varies from yellow-brown to dark brown. The edge is often curled, especially in young specimens. About 3 mm deep pores are sunk into the white to creamy-white underside of the hat, there is space for about 1–3 pores per mm². They have medium-sized, (0.5–) 1–1.5 mm large and rounded to almost diamond-shaped pores that run down a little on the stem and are therefore somewhat elongated. The spore powder is white. The hat goes in the middle or near the center seamlessly into a 2.5–5 cm long and 2–8 mm thick stem . It is ocher-brown, usually lighter in color than the hat and can have reddish hues at the base. The dry surface is either smooth or finely tomentose or slightly scaly. The full, white meat has a very tough, elastic consistency and no particular smell or taste.

Microscopic features

The cylindrically curved or elliptically cylindrical spores measure 5–7 × 1.5–2.5 micrometers.

Species delimitation

The fructification in the winter half year is an important characteristic of the winter stem porling. A potential doppelganger is the May or summer stalk porling ( Lentinus strictipes ), which can only be found from around April. In addition, the species has significantly finer pores, rarely more than 0.5 mm in size. The underside of the hat of young specimens even appears smooth. The wide-hole or Borstrandige Stielporling ( P. arcularius ) looks even more similar , especially the hats of both species show no differences. As the name suggests, the square, diamond-shaped pores up to 2.5 mm wide are significantly larger and can be easily recognized even in young fruiting bodies. Other generic representatives grow later in the year. The lion's yellow stem porling ( P. leptocephalus ), for example, grows on beech wood and has a yellow-brown hat and a black stem base.

Ecology and phenology

Distribution of the fructification of the winter stalk porling in the year

The Winter Stielporling is a saprobiontic inhabitant of dead deciduous, very rarely coniferous wood, which produces a white rot in the substrate . The species colonizes a wide range of hardwoods, mainly lying trunks and branches. The Winterporling occurs in all deciduous, deciduous mixed coniferous forests that are not too dry, as well as in hedges, parks, bushes and similar plantings.

The fruiting bodies appear in two phases: the first focus is between the beginning of September and mid-November, the second aspect lasts from February to April. In mild winters, the fungus also fructifies continuously. During the rest of the year, only overgrown, blown-out fruiting bodies can be found.

distribution

The winter stalk porling occurs in the northern subtropics (Nepal, Pakistan), in Asia, North America and Europe. The species is ubiquitous in Europe and can be found north to Iceland and Finnmark.

meaning

The tough, corky fruiting bodies of the winter stalk porling are unsuitable for consumption. In addition, the fungus that inhabits dead wood has no economic relevance.

swell

  • Josef Breitenbach, Fred Kränzlin (Ed.): Mushrooms of Switzerland. Contribution to knowledge of the fungal flora in Switzerland. Volume 2: Heterobasidiomycetes (gelatinous mushrooms), Aphyllophorales (non-leaf mushrooms), Gastromycetes (belly mushrooms). Mykologia, Luzern 1986, ISBN 3-85604-020-X .
  • Ewald Gerhardt: FSVO manual mushrooms . 3. Edition. BLV, Munich 2002, ISBN 978-3-405-14737-2 (639 pages; one-volume new edition of the BLV intensive guide mushrooms 1 and 2).
  • German Josef Krieglsteiner (Ed.): The large mushrooms of Baden-Württemberg . Volume 1: General Part. Stand mushrooms: jelly, bark, prick and pore mushrooms. Ulmer, Stuttgart 2000, ISBN 3-8001-3528-0 .
  • Hermann Jahn : Central European Porlinge (Polyporaceae s.lato) and their occurrence in Westphalia . In: Westphalian mushroom letters . tape IV . Heiligenkirchen / Detmold 1963 ( available online ).

Web links

Commons : Polyporus brumalis  - album with pictures, videos and audio files