Birch pollen mushroom

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Birch pollen mushroom
Birkenporling pillow pustel mushroom on old fruiting body of the spruce porling

Birkenporling pillow pustel mushroom on old fruiting body of the spruce porling

Systematics
Class : Sordariomycetes
Subclass : Hypocreomycetidae
Order : Crust ball mushrooms (Hypocreales)
Family : Crustball relatives (Hypocreaceae)
Genre : Trichoderma
Type : Birch pollen mushroom
Scientific name
Trichoderma pulvinatum
( Fuckel ) Jaklitsch & Voglmayr

The Birkenporling pillow pustel mushroom ( Trichoderma pulvinatum , Syn .: Hypocrea pulvinata ) is a hose fungus from the order of the crust ball-like mushrooms (Hypocreales) that grows on old fruit bodies of various porlings .

features

Macroscopic features

The fungus forms cushions that overflow into one another, the so-called stroma on the underside of old porlings. They are usually initially white and later light yellow, but can also vary from yellow-orange to yellow-brown. The stroma has warty hair and reacts to KOH with a faint coloration of orange or red. The numerous perithecia are sunk in the stroma, which makes it appear dotted.

Microscopic features

The cylindrical tubes , slightly thickened at the tip, measure (44-) 60-90 (-115) × 3.6-5.2 micrometers. The simply septate spores are hyaline, smooth and upset cylindrical. They measure 3.5–5 × 3–3.5 micrometers.

Characteristics on culture media

On potato dextrose agar, the fungus forms a 10 cm large odorless colony with concentric circles and cotton-wool mycelium at the edges in 10 days. Stroma and perithecia are also formed at the edge. Pigments are produced that are reddish brown in the center and brown on the edge. An odorless mycelium without pigmentation and very few conidiophores grows on SNA agar . On cornmeal dextrose agar, a brown pigment is formed in the center of the colony. The optimum growth in all three nutrient media is 25 ° C. The phialids are quite variable in size, they measure (7–) 24–44 (–50) × (2.7–) 3.6–4.6 (–5.3) micrometers. They are awl-shaped and solitary.

Ecology and diffusion

Birkenporlinge as a typical substrate

The Birkenporling mushroom grows on the underside of old, often already fallen fruiting bodies of various porlings, in addition to the birch porling that gives it its name , these are primarily the spruce porling and species of the genus Tyromyces . This relative species specificity makes it an exception within the genus, which includes the anamorphic genus Trichoderma . It grows from summer to autumn and is widespread, but is often overlooked.

Systematics

The Birkenporling pillow pustel mushroom was first described by Leopold Fuckel in 1870. It is closely related to Hypocrea citrina . Suspicions that it could be the same species have not been confirmed.

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literature

  • Svengunnar Ryman & Ingmar Holmåsen: mushrooms . Bernhard Thalacker Verlag, Braunschweig 1992. ISBN 3-8781-5043-1 , p. 665.

Individual evidence

  1. ↑ a b c d Svengunnar Ryman & Ingmar Holmåsen: Mushrooms. Bernhard Thalacker Verlag, Braunschweig 1992, ISBN 3-8781-5043-1
  2. ↑ a b c d Barrie E. Overton, Elwin L. Stewart, David M. Geiser and Walter M. Jaklitsch. 2006. Systematics of Hypocrea citrina and related taxa. Studies in Mycology 56: 1-38. doi : 10.3114 / sim.2006.56.01 .
  3. ↑ Priscila Chaverri and Gary J. Samuels, Hypocrea / Trichoderma (Ascomycota, Hypocreales, Hypocreaceae): species with green ascospores. Studies in Mycology 48: 1–116. Online (PDF; 655 kB)

Web links

Commons : Birkenporling-pillow pustelpilz  - Collection of pictures, videos and audio files