Astrothelium sanguineoxanthum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Dothideomycetes
Order: Trypetheliales
Family: Trypetheliaceae
Genus: Astrothelium
Species:
A. sanguineoxanthum
Binomial name
Astrothelium sanguineoxanthum
Aptroot (2016)

Astrothelium sanguineoxanthum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae.[1] Found in Brazil, it was formally described as a new species in 2016 by Dutch lichenologist André Aptroot. The type specimen was collected in 1894 by Swedish botanist Gustaf Oskar Andersson Malme in Santa Anna da Chapada (Mato Grosso); there, it was found in a rainforest growing on smooth tree bark. The lichen has a smooth, green to greyish thallus with whitish pseudostromata that range in shape from rounded to irregular to elongated. The thallus contains the lichen products isohypocrellin and lichexanthone; the latter substance causes the thallus and pseudostroma to fluoresce yellow when lit with a long-wavelength UV light, while the pigment isohypocrellin causes a K+ (green) chemical spot test reaction.[2] The combination of characteristics of the lichen that distinguish it from others in Astrothelium are its ascospores, which turn violet in iodine potassium iodide (IKI) stain; and the arrangement and form of its ascomata, which are solitary to irregularly confluent, erumpent to prominent, and are whitish around the ostioles.[3]

References

  1. ↑ "Astrothelium sanguineoxanthum Aptroot". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 30 October 2022.
  2. ↑ Aptroot, André; Ertz, Damien; Etayo Salazar, Javier Angel; Gueidan, Cécile; Mercado Diaz, Joel Alejandro; Schumm, Felix; Weerakoon, Gothamie (2016). "Forty-six new species of Trypetheliaceae from the tropics". The Lichenologist. 48 (6): 609–638. doi:10.1017/s002428291600013x. S2CID 89128070.
  3. ↑ Aptroot, André; Lücking, Robert (2016). "A revisionary synopsis of the Trypetheliaceae (Ascomycota: Trypetheliales)". The Lichenologist. 48 (6): 763–982. doi:10.1017/s0024282916000487. S2CID 89119724.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.