Aleurodiscus canadensis
Aleurodiscus canadensis | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Aleurodiscus canadensis |
||||||||||||
Systematics | ||||||||||||
|
||||||||||||
Scientific name | ||||||||||||
Aleurodiscus canadensis | ||||||||||||
Skolko |
Aleurodiscus canadensis (Syn. Acanthophysellum canadense ) is a mushroom species from the family of layer mushroom relatives (Stereaceae). It forms annual resupinate-spreading fruiting bodies thatgrowon the dead wood of spruce trees ( Picea ). The species is distributed holarctic and occurs in temperate and boreal climates .
features
Macroscopic features
Aleurodiscus canadensis has resupinate (sessile grown on the substrate), spreading basidiocarpia . The smooth hymenium is creamy-white in color. The spore powder of the species is whitish-pink.
Microscopic features
As with all flour discs , the hyphae structure of Aleurodiscus canadensis is monomitic , i.e. it consists only of generative hyphae. The hyaline basidia are four-pored, rarely two-pored. The spores sitting on them are long, ellipsoidal to sub-cylindrical, 15–20 × 7–10 µm in size and smooth. The hyphae have both buckles and acantho hyphidien (spiked- roller- shaped hyphae ends in the hymenium) and club-like, partially constricted gloeocystids (oily cystids ). The congeneric species A. cerussatus and A. fennicus look very similar to A. canadensis and can only be reliably differentiated under the microscope, among other things on the basis of the size of the spores and the presence of buckles.
distribution
The species range of Aleurodiscus canadensis includes the Holarctic from Luxembourg via Sakhalin to Canada. It is limited to the boreal and temperate zones .
ecology
Aleurodiscus canadensis is a saprobiont that colonizes branches and twigs of spruce trees ( Picea spp.).
swell
- German Josef Krieglsteiner (Ed.): The large mushrooms of Baden-Württemberg . Volume 1: General Part. Stand mushrooms: jelly, bark, prick and pore mushrooms. Ulmer, Stuttgart 2000, ISBN 3-8001-3528-0 .