Athelia arachnoidea

Athelia arachnoidea
	Athelia arachnoidea on Thuja orientalis
Systematics
Class :	Agaricomycetes
Subclass :	Agaricomycetidae
Order :	Tissue-like skin (Atheliales)
Family :	Tissue skin relatives (Atheliaceae)
Genre :	Tissue skins ( Athelia )
Type :	Athelia arachnoidea
Scientific name
	Athelia arachnoidea
	Jülich

Athelia arachnoidea is a type of mushroom from the family of tissue skin relatives (Atheliaceae). It forms resupinate, white and mold-like fruiting bodies on conifers and flowering seeds . The known distribution of the species covers large parts of the Palearctic .

features

Macroscopic features

Athelia arachnoidea , like all types of tissue membranes ( Athelia ), forms white, thin fruiting bodies with a smooth hymenium and inconspicuous to spider-like edges. They can be easily removed from the substrate.

Microscopic features

Athelia arachnoidea has a monomitic hyphae structure that is typical of tissue membranes , that is, it only has generative hyphae , which are used for the growth of the fruiting body. The hyphae are hyaline and thin-walled. The subicular hyphae have occasional buckles , the subhymenial hyphae are simply septate and 3.5–5 µm wide. The species does not have cystidia . Their basidia are club-shaped, 15–20 × 4–6 µm in size and cylindrical in shape. At the base they are simply septate, they have two sterigmata . The spores of the fungus are ellipsoidal in shape, 8-10 × 4.5-5.5 µm in size, smooth and thin-walled and hyaline.

distribution

The known distribution of Athelia arachnoidea includes large parts of the Palearctic with the USA, the former Soviet Union , Tunisia and Europe .

ecology

Athelia arachnoidea is a saprobiont that attacks conifers and flowering plants. Well-known host species include stinging juniper ( Juniperus oxycedrus ), stone oak ( Quercus ilex ) and field elm ( Ulmus campestris ). Sometimes the fungus also lives parasitically on various lichens . For example, Physcia tenella , Lecidella elaeochroma and Phlyctis argena are infected . The secondary crop form Rhizoctonia carotae causes rot in carrots . Evidence that individuals found on dead wood and lichen as well as the secondary crop form growing on carrots belong to the same species, however, is still pending.

literature

Annalisa Bernicchia, Sergio Peréz Gorjón: Fungi Europaei. Volume 12: Corticiaceae sl Edizioni Candusso, Alassio 2010, ISBN 978-88-901057-9-1 .
John Eriksson, Leif Ryvarden: The Corticiaceae of North Europe. Volume 3: Coronicium - Hyphoderma. Fungiflora, Oslo 1975, OCLC 715424655 .

Individual evidence

↑ ^a ^b J. Motiejûnaitë, N. Jucevièienë: Epidemiology of the fungus Athelia arachnoidea in epiphytic communities of broadleaved forests under strong anthropogenic impact . In: Ekologija . No. 4 , 2005, p. 28–34 ( [1] [PDF; 208 kB ]).
↑ ^a ^b A. J. Silverside: Athelia arachnoidea in Images of British Lichenicolous Fungi. 2014.
^ GC Adams, BR Kropp: Athelia arachnoidea , the sexual state of Rhizoctonia carotae , a pathogen of carrot in cold storage . In: Mycologia . 88, No. 3, 1996, pp. 459-472. doi : 10.2307 / 3760886 .

Web links

Commons : Athelia arachnoidea - Collection of images, videos and audio files

[Motiejunaite&Jucevieiene2005-1] J. Motiejûnaitë, N. Jucevièienë: Epidemiology of the fungus Athelia arachnoidea in epiphytic communities of broadleaved forests under strong anthropogenic impact . In: Ekologija . No. 4 , 2005, p. 28–34 ( [1] [PDF; 208 kB ]).

[Silverside-2] A. J. Silverside: Athelia arachnoidea in Images of British Lichenicolous Fungi. 2014.

[Adams&Kropp1996-3] GC Adams, BR Kropp: Athelia arachnoidea , the sexual state of Rhizoctonia carotae , a pathogen of carrot in cold storage . In: Mycologia . 88, No. 3, 1996, pp. 459-472. doi : 10.2307 / 3760886 .