Haarstielporlinge

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Haarstielporlinge
Jahnoporus hirtus is the type species of the genus

Jahnoporus hirtus is the type species of the genus

Systematics
Subdivision : Agaricomycotina
Class : Agaricomycetes
Subclass : insecure position (incertae sedis)
Order : Russulales (Russulales)
Family : Sheepporling relatives (Albatrellaceae)
Genre : Haarstielporlinge
Scientific name
Jahnoporus
( Quél. ) Nut

The Haarstielporlinge ( Jahnoporus ) are a very young genus within the family of the Schafstielporlings (Albatrellaceae). The fruiting bodies grow on the ground or on badly rotted tree stumps. They are tough, leathery and divided into a hat and a stem. The ocher yellow to brown hat has a whitish layer of pores. The hyaline, inamyloid spores are spindle-shaped. Jahnoporus hirtus (Quél.) Nut , the brown hairstalk porling , is the type of the genus.

features

Macroscopic features

The annual fruiting bodies, which are structured in hat and stem, are often fused with others. The hat is 1–14 cm wide, arched, then spread out flat. The surface is tomentose to smooth, dry and colored pale ocher-brown to grayish or brown. The hymenophore is tubular . The pores are round to angular and whitish. The dry, ringless stalk is 2–10 cm long and 0.7–4 cm wide and stands central to lateral (laterally). Neither a universal nor a partial velum is formed. The tough, whitish flesh has a pleasant, nutty odor. The spore powder is whitish.

Microscopic features

The unicellular, 2–17 µm long and 4–6 µm wide, inamyloid spores are spindle-shaped, smooth, thin-walled and without germ pores. The Hyphensystem is monomitisch , the hyphae may be inflated partially. Also buckles occur. The four-pore, 30–45 µm long basidia are unicellular and have curved sterigms . There are no cystids or other sterile hymenial elements .

Ecology and diffusion

The fungi live saprotrophically on the trunks and stumps of conifers. There are only two types worldwide. In Europe and North America, Jahnoporus hirtus , the brown hairstalk porling, and in northern China Jahnoporus pekingensis ( JDZhao & LW Xu ) YC Dai occurs.

Systematics

Minimum Evolution family tree of Jahnoporus . The family tree was created using the MEGA 5.10 program. All 18S ribosomal rDNA sequences are from GenBank . The bootstrap test was carried out with 1000 repetitions, usually only values ​​over 50 are given. All further information is given in the image description.

The genus Jahnoporus with the type species Jahnoporus hirtus ( Polyporus hirtus ) Quél. was defined in 1980 as a genus that was still monotypical at the time . It belongs to the Albatrellaceae family because of its morphological similarity to Albatrellus.

Molecular biological investigations of the 18S ribosomal RNA genes by S. Audet and PB Matheny & DS Hibbett have shown that the genus is most closely related to Postia , Amylocystis and Oligoporus species , i.e. all species that belong to the order Polyporales . However , there is no close relationship to Albatrellus or other genera from the order Russulales .

Individual evidence

  1. ↑ a b c Jahnoporus. Nuss, Hoppea 39: 176 (1980). In: MycoBank.org. International Mycological Association, accessed February 19, 2013 .
  2. ↑ a b c Jens H. Petersen & Thomas Læssøe: about the genus Jahnoporus. In: MycoKey. Retrieved February 22, 2013 .
  3. ↑ Yu-Cheng Dai & Hai-Sheng Yuan: Type studies on polypores described by JD Zhao . In: Ann. Bot. Fennici . Vol. 47, 2010, ISSN  1797-2442 , pp. 113–117 (English, online [PDF; 583 kB ]).
  4. ↑ Jahnoporus. Nuss, Hoppea 39: 176 (1980). In: CABI databases: speciesfungorum.org. Retrieved February 22, 2013 .
  5. ↑ Jahnoporus - GenBank data. In: ncbi.nlm.nih.gov. Retrieved March 6, 2013 .

Web links

Commons : Haarstielporlinge ( Jahnoporus )  - Collection of pictures, videos and audio files