Troll hand

Troll hand
Troll hand ( Hypocreopsis lichenoides )
Systematics
Class : Sordariomycetes Subclass : Hypocreomycetidae Order : Crust ball mushrooms (Hypocreales) Family : Crustball relatives (Hypocreaceae) Genre : Translucent lichen fungi ( Hypocreopsis ) Type : Troll hand
Scientific name
Hypocreopsis lichenoides
( Death ) Seaver

The troll hand or also willow pseudo- lichen mushroom ( Hypocreopsis lichenoides ) is a type of mushroom from the family of the crust ball mushroom relatives . The saprobiont grows on dead branches.

features

Macroscopic features

The flat Stromata are 16-36 (-110) mm wide, 24 mm thick and have at the edge of radially extending ridges or separate lobes , whereby they recall a gnarled hand. Their color changes from yellow-brown ( conidia shape ) to red-brown ( main fruit shape ) and appears dotted by the perithecia when ripe in spring . The fruiting bodies usually grow individually, rarely in groups.

Microscopic features

The narrow, cylindrical tubes each contain 8 spores. The spores are elliptical to broadly spindle-shaped, thin-walled, hyaline , almost smooth, simply septate and variable in size. They vary from 22–30 × 6–9 μm.

ecology

The troll hand occurs mainly on dead, but still attached branches of various willows , hazelnuts and bird cherry , also on buckthorn , white spruce , aspen , red elder and other woody plants. It lives in damp forests and bushes. It was also found near peat bogs . It occurs very often on the old fruiting bodies of the tobacco-brown bristle disc ( Hymenochaete tabacina ). In Jahn (1990) it is assumed that the species occurs specifically on wood that has already been decomposed by white rot fungi as a so-called successor fungus.

distribution

The troll hand has extensive, if patchy, deterioration in the northern hemisphere of North America and Europe. It is quite common in Scandinavia, so the German name was taken directly from Swedish. In Central Europe, however, it occurs only rarely. There is only one known site in Austria near Graz.

swell

literature

• Herrmann Jahn : Mushrooms on trees. Patzer, Berlin 1990
• Svengunnar Ryman & Ingmar Holmåsen: mushrooms. Bernhard Thalacker Verlag, Braunschweig 1992, ISBN 3-8781-5043-1
• M. Stasinska, 2004. Hypocreopsis lichenoides P. Karst (Fungi, Ascomycetes), new to Poland. ACTA SOC. BOT. POLE. 73: 135-137. On-line

Individual evidence

1. ↑ GBIF portal
2. ↑ M. Stasinska, 2004. Hypocreopsis lichenoides P. Karst (Fungi, Ascomycetes), new to Poland. ACTA SOC. BOT. POLE. 73: 135-137
3. ^ Database of mushrooms in Austria

Web links

Commons : Trollhand ( Hypocreopsis lichenoides )  - Collection of images, videos and audio files