Thin hyphetic deafblings

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Thin hyphetic deafblings
Systematics
Class : Agaricomycetes
Subclass : insecure position (incertae sedis)
Order : Russulales (Russulales)
Family : Deaf relatives (Russulaceae)
Genre : Russulas ( Russula )
Type : Thin hyphetic deafblings
Scientific name
Russula stenotricha
Romagn.

The thin hyphae ( Russula stenotricha ) is a species of fungus from the family of the deaf relatives (Russulaceae). The very rare, more or less greenish Täubling grows under different deciduous trees. It is very similar to the closely related grass-green birch blubber, but is usually smaller. Reliable identification is only possible with a microscope.

features

Macroscopic features

The fleshy, often quite fragile hat is 3–5 (7) cm wide, first arched, then spread out and clearly depressed in the middle. The edge is blunt, smooth or furrowed very briefly. The hat is pale green or gray-green in color, so that the fungus is quite similar to the grass-green birch blubber ( R. aeruginea ), but more reddish colors are mixed in in the middle of the hat. Sometimes the deaf is quite pale, but never purely grayish. The hat skin is smooth, sometimes wrinkled or finely dotted and can be peeled off to about the middle of the hat.

The lamellas are initially crowded, then quite distant and are often forked. They are narrowed on the stem or run down easily. They are blunt, 4–5.5 mm wide and first ivory, then cream-ocher colored and without an orange shimmer. The spore powder is off-white.

The irregularly clubbed stem measures 5–6 × 1–1.2 cm. At first it is full, then spongy to pithy and finally hollow. It is more or less white in color and hardly tends to yellow, but at the base it often turns brownish. The white flesh is quite thick and first firm, then brittle. Sometimes it turns slightly yellow. The smell is fleeting and often hardly noticeable, the taste is mild in the meat, but can be slightly pungent in the lamellas. With iron sulfate , the meat turns pinkish-orange.

Microscopic features

The small, short elliptical to rather spherical spores are 6–7 (8) µm long and 5–6.5 µm wide. The ornament is sparse but clearly burried and partly connected like a network. The basidia measure 35–52 × 5–6.5 µm, the cystidae are 60–72 (100) µm long and 5–6.5 µm wide.

The cap skin (epicutis) consists of slender, 3.5–4 (4.7) µm wide hairs and numerous, short, often clubbed, blunt pileocystids that are 20–50 µm long and 8–10 (12) µm wide. The hyphae are articulated and end with an elongated, conical or narrowed end cell. The lower limbs of the hyphae are not enlarged.

Species delimitation

The grass-green birch deafness ( Russula aeruginea ) and the olive-green deafness ( Russula pseudoaeruginea ) are both quite similar and macroscopically difficult to distinguish, but can be differentiated microscopically by their hat skin anatomy. The hyphae cells of the hat skin are shorter and not hair-shaped in the olive-green blubber and, apart from the elongated, conical end cell, consist of isodiametric to almost spherical cells arranged like a chain. The grass-green birch blubber, on the other hand, is usually much larger and its lamellae have a more or less orange shimmer. Microscopically, it differs mainly in the significantly longer (up to 100 µm) pileocystidia; in addition, the terminal cells of the capillary skin are never narrowed.

Ecology and diffusion

European countries with evidence of finding of the thin hyphae.
Legend:
  • Countries with found reports
  • Countries without evidence
  • no data
  • non-European countries

    • The mycorrhizal fungus grows on lime-rich, loamy soils under various deciduous trees. It is particularly common among hornbeam, linden and birch trees. The very rare deaf has been found in Spain, Italy, France, the Netherlands, Belgium, Germany, Hungary, Denmark and Sweden. It is possible that it is more widespread, but is not differentiated from the very similar grass-green birch pavilion.

    Systematics

    The species was validly described in 1967 by Henri Romagnesi in his great deaf monograph "Les Russules d'Europe et d'Afrique du Nord". Romagnesi had described the species as early as 1962, five years earlier, but without specifying or depositing a type specimen, so that the species was not validly described according to the rules of the International Code of Botanical Nomenclature .

    Inquiry system

    The thin hyphae is placed by M. Bon in the Griseinae subsection , a subsection of the Heterophyllea section . The subsection contains medium to large species with gray, green, purple or olive colored hats. The actually mild-tasting mushrooms often have slightly pungent-tasting lamellae, their spore powder is cream to ocher in color.

    meaning

    Like all deaflings from the Heterophyllea section , it is edible.

    literature

    Individual evidence

    1. ↑ a b c d Russula stenotricha. (PDF; 1.4 MB) Monographic Key to European Russulas (1988). (No longer available online.) In: The Russulales website w3.uwyo.edu. P. 51 , archived from the original on July 28, 2010 ; Retrieved June 20, 2011 (English, translation by M. Bon's Russula key).
    2. ^ A b Original diagnosis of Russula stenotricha . In: Russulales News / mtsn.tn.it . Retrieved on August 31, 2011.  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. @1@ 2Template: Dead Link / www.mtsn.tn.it  
    3. ↑ Russula stenotricha. (PDF DOC) Russulas. Micologia.biz Web de micología Europea, p. 68 , accessed June 20, 2011 (Spanish).
    4. ^ Database of mushrooms in Austria. In: austria.mykodata.net. Austrian Mycological Society, accessed October 12, 2012 .
    5. ↑ a b Belgian List 2012 - Russula stenotricha. Retrieved June 9, 2012 (Täubling very rare: Vulnerable).
    6. ↑ Worldwide distribution of Russula stenotricha. (No longer available online.) In: data.gbif.org. Archived from the original on March 4, 2016 ; Retrieved August 21, 2011 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.  @1@ 2Template: Webachiv / IABot / data.gbif.org
    7. ↑ Russula stenotricha in the PilzOek database. In: pilzoek.de. Retrieved August 21, 2011 .
    8. ↑ a b NMV Verspreidingsatlas | Russula stenotricha. In: verspreidingsatlas.nl. Retrieved May 8, 2012 .
    9. ↑ Distribution atlas of mushrooms in Switzerland. (No longer available online.) In: wsl.ch. Federal Research Institute for Forests, Snow and Landscape WSL, archived from the original on October 15, 2012 ; Retrieved October 8, 2012 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.  @1@ 2Template: Webachiv / IABot / www.wsl.ch
    10. ↑ Mirca Zotti et al .: The macrofungal checklist of Liguria . In: Mycotaxon . tape 105 , 2008, ISSN  0093-4666 , p. 167–170 (Italian, mycotaxon.com [PDF; 351 kB ; accessed on August 31, 2011]).
    11. ↑ Pertti Salo, Tuomo Niemelä, Ulla Nummela-Salo: SY769 Suomen helttasienten ja tattien ekologia, levinneisyys ja uhanalaisuus . (Finnish lamellar and tube mushrooms: ecology, distribution and threat status). Ed .: Esteri Ohenoja. 2005, ISBN 952-11-1997-7 (Finnish, ymparisto.fi [PDF]).
    12. ↑ MycoBank Remote Service . In: mycobank.org . 2011 [last update]. Retrieved on May 11, 2012: “Russula stenotricha Les Russules d'Europe et d'Afrique du Nord. 1967 "

    Web links