| Astrothelium flavoduplex | |
|---|---|
Scientific classification
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Dothideomycetes |
| Order: | Trypetheliales |
| Family: | Trypetheliaceae |
| Genus: | Astrothelium |
| Species: | A. flavoduplex
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| Binomial name | |
| Astrothelium flavoduplex
Aptroot & M.Cáceres (2016)
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Astrothelium flavoduplex 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 lichenologists André Aptroot and Marcela Cáceres. The type specimen was collected by the authors in the Parque Natural Municipal de Porto Velho ( Porto Velho, Rondônia), where it was found growing on a twig in a low-altitude primary rainforest. The lichen has a smooth and somewhat shiny, olive-green thallus with a black prothallus line (about 0.3 mm wide) and covers areas of up to 8 cm (3.1 in) in diameter. The ascomata are more or less spherical ( globose) and typically occur in groups of around 7 to 50, usually immersed in the bark tissue as pseudostromata. The thallus contains lichexanthone, a lichen product that causes the thallus surface to fluoresce yellow when lit with a long-wavelength UV light. The use of thin-layer chromatography on collected samples revealed the presence of an anthraquinone compound, possibly parietin. Astrothelium mesoduplex is similar in appearance, but that species lacks lichexanthone, and has shorter ascospores. [2]
References
- ^ "Astrothelium flavoduplex Aptroot & M. Cáceres". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 6 November 2022.
- ^ Aptroot, André; Cáceres, Marcela Eugenia da Silva (2016). "New Trypetheliaceae from the Amazon basin in Rondônia (Brazil), the centre of diversity of the genus Astrothelium". The Lichenologist. 48 (6): 693–712. doi: 10.1017/s0024282915000584. S2CID 89013757.
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