Architrypethelium hyalinum

Architrypethelium hyalinum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae.[1] Found in Costa Rica and Brazil, it was formally described as a new species in 2008 by lichenologist André Aptroot.[2] The type specimen was collected by Harrie Sipman from the Las Cruces Biological Station in Puntarenas. The lichen has a smooth to uneven, olive-green thallus. Its ascomata occur solitarily, have an apical ostiole, and measure 0.7–1.5 mm in diameter. Ascospores number 4 to 8 per ascus, have an oblong to ellipsoid shape with 3 septa, and measure 100–150 by 30–50 μm. These spores are among the largest of the 3-septate lichens in the Trypetheliaceae. Both the thallus and ascomata contain lichexanthone, a lichen product that causes these structures to glow yellow when lit with a long-wavelength UV light; A. hyalinum is the only species in genus Architrypethelium that contains lichexanthone.[3]

Architrypethelium hyalinum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Dothideomycetes
Order: Trypetheliales
Family: Trypetheliaceae
Genus: Architrypethelium
Species:
A. hyalinum
Binomial name
Architrypethelium hyalinum
Aptroot (2008)

References

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  1. ^ "Astrothelium curvisporum Aptroot & M. Cáceres". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 6 November 2022.
  2. ^ Aptroot, A.; Lücking, R.; Sipman, H.J.M.; Umaña, L.; Chaves, J.L. (2008). "Pyrenocarpous Lichens with Bitunicate Asci: A First Assessment of the Lichen Biodiversity Inventory in Costa Rica". Bibliotheca Lichenologica. 97. Berlin/Stuttgart: J. Cramer in der Gebrüder Borntraeger Verlagsbuchhandlung.
  3. ^ Aptroot, André; Lücking, Robert (2016). "A revisionary synopsis of the Trypetheliaceae (Ascomycota: Trypetheliales)". The Lichenologist. 48 (6): 763–982 [793–794]. doi:10.1017/s0024282916000487. S2CID 89119724.