Английская Википедия:Astrothelium lucidostromum
Шаблон:Short description Шаблон:Use British English Шаблон:Use dmy dates Шаблон:Speciesbox
Astrothelium lucidostromum is a species of corticolous (bark-dwelling) 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 by Harrie Sipman about Шаблон:Convert south of Aishalton (Upper Takutu-Upper Essequibo) at an altitude of Шаблон:Convert; there, it was found in a savanna forest growing on smooth tree bark. The lichen has a smooth and somewhat shiny, pale yellowish-grey thallus with a cortex but lacking a prothallus, which covers areas of up to Шаблон:Convert in diameter. The presence of the lichen does not induce the formation of galls in the host plant. The pseudostromata contains lichexanthone, a lichen product that causes that structure to fluoresce when lit with a long-wavelength UV light.[2] The main characteristics of the lichen distinguishing it from others in Astrothelium are the UV+ pseudostroma; the fused ascomata; and the immersed pseudostroma that have a white cover (contrasting with the thallus colour).[3] Astrothelium eustomuralis is a smiliar species, but in that species, lichexanthone only occurs in the ostiole, not the entire pseudostroma.[2]
References
