Astrothelium lucidothallinum | |
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Scientific classification
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Domain: | Eukaryota |
Kingdom: | Fungi |
Division: | Ascomycota |
Class: | Dothideomycetes |
Order: | Trypetheliales |
Family: | Trypetheliaceae |
Genus: | Astrothelium |
Species: | A. lucidothallinum
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Binomial name | |
Astrothelium lucidothallinum
Aptroot (2016)
|
Astrothelium lucidothallinum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. [1] Found in Guyana, it was formally described as a new species in 2016 by Dutch lichenologist André Aptroot. The type specimen was collected about 30 km (19 mi) south of Aishalton ( Upper Takutu-Upper Essequibo) at an altitude of 300 m (980 ft); there, it was found in a savanna growing on smooth tree bark. The lichen has a smooth and somewhat shiny, pale yellowish grey thallus with a cortex and a thin (0.1 mm wide) black prothallus line. It covers areas of up to 9 cm (3.5 in) in diameter. The thallus contains lichexanthone, a lichen product that causes it to fluoresce yellow when lit with a long-wavelength UV light. [2] The combination of characteristics of the lichen that distinguish it from others in Astrothelium are: the presence of lichexanthone only in the thallus; the indistinctly pseudostromatic ascomata, with erumpent pseudostromata—whitish in colour but lacking a sharp outline; and the dimensions of the ascospores (70–90 by 18–20 μm) as well as their number per ascus (eight). [3]
Astrothelium lucidothallinum | |
---|---|
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Fungi |
Division: | Ascomycota |
Class: | Dothideomycetes |
Order: | Trypetheliales |
Family: | Trypetheliaceae |
Genus: | Astrothelium |
Species: | A. lucidothallinum
|
Binomial name | |
Astrothelium lucidothallinum
Aptroot (2016)
|
Astrothelium lucidothallinum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. [1] Found in Guyana, it was formally described as a new species in 2016 by Dutch lichenologist André Aptroot. The type specimen was collected about 30 km (19 mi) south of Aishalton ( Upper Takutu-Upper Essequibo) at an altitude of 300 m (980 ft); there, it was found in a savanna growing on smooth tree bark. The lichen has a smooth and somewhat shiny, pale yellowish grey thallus with a cortex and a thin (0.1 mm wide) black prothallus line. It covers areas of up to 9 cm (3.5 in) in diameter. The thallus contains lichexanthone, a lichen product that causes it to fluoresce yellow when lit with a long-wavelength UV light. [2] The combination of characteristics of the lichen that distinguish it from others in Astrothelium are: the presence of lichexanthone only in the thallus; the indistinctly pseudostromatic ascomata, with erumpent pseudostromata—whitish in colour but lacking a sharp outline; and the dimensions of the ascospores (70–90 by 18–20 μm) as well as their number per ascus (eight). [3]