Arachnomyces flavidulus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Eurotiomycetes
Order: Arachnomycetales
Family: Arachnomycetaceae
Genus: Arachnomyces
Species:
A. flavidulus
Binomial name
Arachnomyces flavidulus
Speg. 1912

Arachnomyces flavidulus is a species of ascomycete fungus discovered in 1912 by botanist Carlo Luigi Spegazzini.[1] It was recovered from rotting Eucalyptus globulus leaves from a park in Buenos Aires, Argentina.[2]

Morphology

The fungus has a sparse, superficial, sulphurous matrix surrounding its surface. Attached to the fruiting body is a subiculum (wool-like mycelium growth),[3] very thin and loose, formed by irregularly branched slender hyphae (1.5-2 μm). The perithecia are scattered, globose or globose-depressed, 250-500 μm in diameter, lacking an opening or ostiole, of yellow color, fragile, densely covered in yellowish brittle hairs of thinly membranous indistinct composition. The asci are subglobose, tiny, clustered, measuring 12 μm in diameter, with rapidly flowing octospores. These spores are globose to ellipsoid in shape, very thinly coated and light, 4 to 3 μm wide.[2][4] The species appears similar to Eurotium.[2]

Taxonomy

A. flavidulus was listed as a doubtful species since 1970 because it produces ascospores that differ from other Arachnomyces members.[5]

References

  1. ↑ Perla, Hugo O. (2014). López, Hugo Luis; Ponte Gómez, Justina (eds.). "Guía alfabética de especies de hongos publicadas por Carlos Luis Spegazzini". ProBiota: Serie Documentos. Universidad Nacional de La Plata (34). ISSN 1666-731X.
  2. 1 2 3 Spegazzini, Carolo (29 April 1912). "Mycetes argentinenses". Anales del Museo Nacional de Historia Natural de Buenos Aires. Vol. XXIII. Buenos Aires: Impr. y Casa Editora "Juan A. Alsina". p. 25. Archived from the original on 2022-09-07. Retrieved 2022-09-07.
  3. ↑ Fungi For The People. "Myco Glossary: a glossary of mycological terms". WordPress. Retrieved 2022-09-08. SUBICULUM – a wool- or crust-like growth of mycelium under fruit bodies.
  4. ↑ P. A. Saccardo (15 July 1926). Trotter, Alessandro; Traverso, Giovanni Battista; Saccardo, Domenico (eds.). Sylloge Fungorum omnium hucusque cognitorum. Vol. XXIV Sectio I Supplementum universale Pars X. Phycomycetae, Laboulbeniomycetae Pyrenomycetae p. p. Abellinum: Sumptibus Coheredum Saccardo. Typis Pergola, Vendit extra Italiam R. Friedländer & Sohn, Berolini.
  5. ↑ SUN, BING-DA; ZHOU, YU-GUANG; CHEN, AMANDA-JUAN; HOUBRAKEN, JOS (2019). "Phylogeny and a new species of the genus Arachnomyces (Arachnomycetaceae)" (PDF). Phytotaxa. 394 (1): 089–097. doi:10.11646/phytotaxa.394.1.6.
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