Gloeocystid bark sponges

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Gloeocystid bark sponges
Vesiculomyces citrinus is the type species of the genus

Vesiculomyces citrinus is the type species of the genus

Systematics
Subdivision : Agaricomycotina
Class : Agaricomycetes
Subclass : insecure position (incertae sedis)
Order : Russulales (Russulales)
Family : Cystid bark relatives (Peniophoraceae)
Genre : Gloeocystid bark sponges
Scientific name
Vesiculomyces
E. Hagstr. 1977

The gloeocystid bark sponges ( Vesiculomyces ) are a genus of fungi within the family of the cystid bark fungus relatives (Peniophoraceae). The mushrooms have white to yellow, dry-skinned, moist, mostly waxy, resupinate fruiting bodies. Microscopically they are by their mostly sulfonegativen Gloeozystiden and the nearly spherical, smooth, amyloid in spores. There are usually no buckles . Vesiculomyces citrinus , the lemon-yellow gloeocystid bark fungus , is the type species of the genus.

features

The membranous to waxy, resupinate fruiting bodies are firmly attached to the substrate and are up to 1 mm thick. The hymenium is smooth or bumpy and white, cream or ocher in color. The mushrooms have a soft and, at least when moist, more or less waxy flesh (context).

The spore powder is whitish. The ellipsoidal to almost spherical spores are smooth, thin-walled and amyloid. They measure 4–7 µm × 4–7 µm. The hyphae system is monomitic and consists of simple, buckleless hyphae . The hymenium is a euhymenium and consists of narrow- clumped and 4-spore basidia , which are more or less stalked and between 30-50 µm long. In addition, one finds subhymeniale , spindle-shaped, spherical to pear-shaped and 40-150 microns long Gloeozystiden . They are smooth, thin-walled, more or less puffed up and without any grainy or oily content. Your sulfobenzaldehyde reaction is usually negative. In addition, you can still find simple, to the tip tapered or like pearls constricted (moniliforme) Hyphidien .

Ecology and diffusion

The fungi grow saprobiotically on dead wood and can cause white rot. In general, they prefer softwood, but can grow on hardwood just as well. The type species is widespread in Europe and North America.

Systematics

Hagström proposed the genus Vesiculomyces in 1977 in order to separate Gloeocystidiellum species with sulfobenzaldehyde-negative gloeocystids, buckleless hyphae, long, narrow basidia and almost spherical basidiospores from the genus Gloeocystidiellum, which was then still very species-rich . As a type species he gave Vesiculomyces citrinus (Pers.) Hagström (syn .: Thelephora citrina ). However, as early as 1958, J. Boidin was able to show that at least some species of the genus, including the type species Vesiculomyces citrinus, produce some sulfobenzaldehyde-positive gloeocystides, at least in culture. In 1976 Larsen and Burdsall pointed out that the sulfobenzaldehyde reaction of gloeocystides is very unreliable and error-prone, so that in their opinion this characteristic is only of limited taxonomic value. All of this led to Boidin and Lanquetin expanding the original concept of the genus in 1983 and adding sulfopositive species such as Corticium chelidonium , C. lactescens , C. leucoxanthum , C. luridum , C. sulcatum and Gloeocystidiellum humilis to the genus Vesiculomyces .

S.-H. Wu believed 1996 that the genus Vesiculomyces due to their core behavior and sometimes sulfobenzaldehyde positive Gloeozystiden synonymous with Gloiothele is. However, molecular studies by E. and KH Larsson (2003) and SL Miller and his co-authors (2006) show that Vesiculomyces , although closely related, is a sister taxon of Gloiothele and must be viewed as an independent genus. A total of 13 species have been placed in the genus since 1977, but today, according to the Indexfungorum and Mycobank databases, they are placed in the genera Megalocystidium , Gloiothele , Gloeocystidiellum , Corticium or Amylofungus . Since they could not confirm the observation by J. Boidin (1958) and Maekawa (1982) that Vesiculomyces citrinus forms sulfopositive gloeocystidae, E. and KH Larsson suggested that the genus be retained with the type species.

swell

  • Vesiculomyces. E. Hagstr., Bot. Notiser 130: 53 (1977). In: MycoBank.org. International Mycological Association, accessed February 19, 2013 .
  • Vesiculomyces. E. Hagstr., Bot. Notiser 130: 53 (1977). In: www.indexfungorum.org. Retrieved February 20, 2013 .

Individual evidence

  1. ↑ a b A. Bernicchia, SP Gorjón: Fungi Europaei . Corticiaceae s. l. tape 12 , 2010, p. 715 ( mycobank.org ).
  2. ↑ a b Jens H. Petersen, Thomas Læssøe: about the genus Vesiculomyces. In: MycoKey. Retrieved February 22, 2013 .
  3. ^ A b N. Maekawa: Taxonomic study of Japanese Corticiaceae (Aphyllophoraceae) II . In: Report of the Tottori Mycological Institute . tape 32 , 1994, pp. 31 ( mycobank.org ).
  4. ↑ , J. Boidin, P. Lanquetin: Basidiomycetes Aphyllophorales épitheloïdes étales . In: Mycotaxon . Vol .: 16 (2), 1983, pp. 493 ( online ).
  5. ↑ Ellen Larsson, Karl-Henrik Larsson: Phylogenetic relationships of russuloid basidiomycetes with emphasis on aphyllophoralean taxa . In: Mycological Society of America (Ed.): Mycologia . tape 95 , no. 6 . Lawrence 2003, p. 1037-1065 ( mycologia.org ).
  6. ↑ Steven L. Miller, Ellen Larsson, Karl-Henrik Larsson, Annemieke Verbeken and Jorinde Nuytinck: Perspectives in the new Russulales . In: Mycologia . tape 98 , no. 6 , 2006, p. 960-970 ( mycologia.org [PDF]).

Web links

Commons : Gloeocystid Bark Sponges  - Collection of images, videos and audio files