Aleuromyces gabonicus
| Aleuromyces gabonicus | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Aleuromyces | ||||||||||||
| Boidin & Gilles | ||||||||||||
| Scientific name of the species | ||||||||||||
| Aleuromyces gabonicus | ||||||||||||
| ( Boidin , Lanq. & Gilles ) Boidin & Gilles |
Aleuromyces gabonicus ( Syn .: Aleurodiscus gabonicus ) is a saprotrophic species of fungus from the family of layer fungus relatives (Stereaceae). It is the type species of the monotypic fungus genus Aleuromyces . The genus is a satellite genus of the Aleurodiscus complex. From Aleurodiscus s. s. it is distinguished by the white, not pink colored spore powder and the warty and not prickly ornamented spores. The type species grows on dead hardwood and has so far only been proven in Africa.
Description of the genus
The resupinate, whitish fruiting bodies have an edge that adheres to the substrate and is not bent. The hymenium contains abundant inamyloid acanthohyphidia and sulfoaldehyde-negative gloeocystidia . The basidiospores are amyloid and finely ornamented with warty ornaments, the spore powder is white. The genus differs from Aleurodiscus s. s. by the non-pink colored spore powder and the non-prickly spores.
features
The annual, corticoid fruiting bodies begin as small spots that can eventually flow together more or less. They are whitish to pale yellow in color. The hyphae system is monomitic . The generative hyphae have buckles on their septa and are up to 20 µm thick in the subiculum . The hyphae of the subhymenium are only 2–4 µm thick. The gloeocystids have a yellowish, granular content and slightly thickened cell walls at the base. They are cylindrical to club-shaped and measure 60–90 × 8–15 µm. As a rule, they taper towards the tip and are reminiscent of moniliform (pearl-like) cystids due to a few slight constrictions. In addition, there are numerous, irregularly shaped acanthohyphidia in the hymenium, some of which are reminiscent of finely branched Dendrohyphidia , but the ends of which have spiky to finger-like protuberances. Its smooth tip is weakly amyloid. There are also weakly branched Dendrohyphidia. Possibly these are young, undeveloped acanthohyphidia. The club-shaped basidia are 55–75 µm long and 14–18 µm wide and carry four large sterigms . The 14–18 µm long and 11–14 µm wide basidiospores are egg-shaped and decorated with warty ornaments. The fungi grow on dead hardwood and have so far only been found in Africa ( Gabon and La Réunion on the Reunion ).
Systematics
The holotype of the species was collected in 1979 by G. Gilles in Gabon and described scientifically for the first time in 1986 by J. Boidin, P. Lanquetin and G. Gilles as Aleurodiscus gabonicus . In 2002 Boidin and Gilles put the taxon as the only species in their newly created genus Aleuromyces . Perhaps Aleuromyces gabonicus with the very similar, found in Cuba Art Aleurodiscus tenuis Burt related. However, it lacks the gloeocystids, which are very noticeable in A. gabonicus . Both species have not yet been investigated in terms of molecular biology, so the actual family relationships are still unclear.
swell
- Aleuromyces. Boidin, J .; Gilles, G. 2001. In: MycoBank.org. International Mycological Association, accessed September 16, 2014 .
Individual evidence
- ↑ J. Boidin, G. Gilles: Basidiomycètes Aphyllophorales de l'ile de Réunion XXIII - Aleurodiscoideae . In: Bulletin de la Société Mycologique de France . tape 117 , no. 3 , 2001, p. 176 (Latin, mycobank.org - generic diagnosis ).
- ↑ a b M. Núñez, L. Ryvarden: The genus Aleurodiscus (Basidiomycotina) . In: Synopsis Fungorum . tape 12 , 1997, p. 85 ( mycobank.org ).
Web links
- J. Boidin, G. Gilles: Basidiomycètes Aphyllophorales de l'ile de Réunion XXIII - Aleurodiscoideae . In: Bulletin de la Société Mycologique de France . tape 117 , no. 3 , 2001, p. 176 ( mycobank.org - representation of the micro-characteristics [basidia, acanthohyphidia, goeocystidia and spores]).