Amylosporomyces
| Amylosporomyces | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Amylosporomyces | ||||||||||||
| SS rattan |
Amylosporomyces is a genus offungusfrom the family of layer fungus relatives (Stereaceae). The mushrooms have thin, membranous fruiting bodies with rhizomorphs and small, amyloid and ornamented basidiospores . Whether in Hymenium also Gloeozystiden happen is controversial. The type species of the genus is Amylosporomyces echinosporus SS Rattan . However, E. and KH Larrson believe that the type species is synonymous with Gloeodontia subasperisporum . If they are right, the genre is obsolete.
features
The thin, resupinate fruiting bodies are typically a few centimeters long and wide and up to 0.2 mm thick. They are membranous, white or pale yellow, and grow on wood or bark. The hymenium surface is small to finely flaky or smooth and follows the topography of the substrate. The very thin subiculum is hardly differentiated.
The monomitic hyphae system consists of narrow, buckled, generative hyphae that are 1.5–2.5 µm wide. Their walls are hyaline, thin, and both inamyloid and acyanophilic . Allegedly, gloeocystids occur only in A. subasperisporus , which is now classified as gloeodontia . The four-pore basidia are somewhat urn-shaped ( urniform ) and measure around 15 µm × 5 µm. The small, kidney-shaped and amyloid basidiospores are 3–5 µm long and 2–3 µm wide and have only a tiny apiculus . The thin, hyaline spore wall is decorated with warty ornaments and cannot be stained with cotton blue (acyanophil).
Systematics
The genus was proposed by S. Rattan in 1977 for a newly found, corticoid species from the Himalayas. He named the main characteristics of the genus: 1. thin, membranous fruiting bodies with rhizomorphs, 2. small, amyloid, ornamented basidiospores and 3. no gloeocystids or other cystids. In addition to the type species Amylosporomyces echinosporus , he also placed Peniophora humifaciens Burt in the genus. Since A. humifaciens has both skeletal hyphae and cystidae, Freeman and Petersen transferred the species to the genus Scytinostromella in 1979 . In 1988 Hjortstam and Ryvarden finally added another species to the genus, Gloeocystidiellum subasperisporum . Eq. However, subasperisporum has gloeocystids, which contradicts the original genus concept. It also lacks the typical rhizomorphs. In 2003 E. and KH Larrson were able to show that the species phylogenetically belongs to the genus Gloeodontia . In the same year (1988) HS Khara added Amylosporomyces camelicolor, a fungus from the Indian Punjab region, to the genus.
In 2003, E. and KH Larrson examined type material from Amylosporomyces echinosporus and, in contrast to S. Rattan, found numerous gloeocystidae, as well as spores similar to those of Eq. subasperisporum were almost identical. In herbarium , the gloeocystids could no longer be stained with sulfovanillin, which is why they may have been overlooked so far. In any case, based on their investigations, E. and KH Larrson believe that Eq. subasperisporum and Amylosporomyces echinosporus are synonymous.
swell
Web sources
- Amylosporomyces. SS rattan (1977). In: MycoBank.org. International Mycological Association, accessed September 16, 2014 .
Individual evidence
- ^ A b J. Ginns, GW Freeman: The Gloeocystidiellaceae (Basidiomycota, Hericiales) of North America . In: Bibliotheca Mycologica . tape 157 , 1994, p. 15 ( mycobank.org ).
- ↑ 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 ).