Leucodecton canescens is a species of lichen in the family Graphidaceae. Found in Sri Lanka, it was formally described as a new species in 2014 by lichenologists Gothamie Weerakoon, Robert Lücking and Helge Thorsten Lumbsch. The type specimen was collected from the Maussakanda Tea Estate at an altitude of 1,074 m (3,524 ft). The lichen, which has been recorded from several locations in the Central Province, grows in semi-exposed, disturbed areas at high elevations. The specific epithet canescens refers to the grey-coloured cover of the thallus.
Rhabdodiscus isidiatus is a species of corticolous lichen in the family Graphidaceae. Found in Sri Lanka, it was formally described as a new species in 2014 by lichenologists Gothamie Weerakoon, Robert Lücking, and Helge Thorsten Lumbsch. The type specimen was collected from the Elkaduwa Plantation in Matale at an altitude of 915 m (3,002 ft). The lichen is only known to occur at the type locality, which is a patch of mid-elevation, disturbed montane forest. The specific epithet isidiatus refers to the presence of isidia on the thallus. Rhabdodiscus isidiatus has a cream-colored to white, smooth to uneven thallus up to 5 cm (2 in) in diameter. The ascomata are rounded and prominent, measuring 0.7–1.0 mm in diameter with a 0.3–0.5 mm wide pore and a light brown rim. Its ascospores are hyaline, ellipsoid in shape, contain three thick septa, and measure 12–15 by 5–6 μm. Secondary chemicals present in the lichen include psoromic acid, subpsoromic acid, and 2'-O-demethylpsoromic acid.
Astrothelium sipmanii is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. It is found in Guyana.
Astrothelium inspersogalbineum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. Found in Singapore, it was formally described as a new species in 2016 by lichenologists André Aptroot and Gothamie Weerakoon. The type specimen was collected by the second author in a rainforest, where it was found growing on smooth bark. The lichen has a smooth and somewhat shiny, pale greenish-grey thallus with a cortex and a thin black prothallus line. It covers areas of up to 3 cm (1.2 in) in diameter, and does not induce gall formation in its host plant. A yellow to orange anthraquinone was the only lichen product detected in the collected specimens using thin-layer chromatography. A. inspersogalbineum also contains the compound lichexanthone, which causes the thallus to fluoresce yellow when lit with a long-wavelength UV light. The main characteristics of the lichen distinguishing it from others in Astrothelium are its inspersedhamathecium; its ascospores, with dimensions of 20–25 by 9–11 μm; and the grouping of its ascomata, which can fuse together to become irregularly confluent.
Astrothelium nigrum is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. It is characterized by its conical black pseudostromata, which contrast sharply with the thallus. This lichen species has been found only in Brazil and is unique in its appearance, superficially resembling a Pyrenula species.
Astrothelium supraclandestinum is a species of lichen in the family Trypetheliaceae. This lichen species is closely related to Astrothelium subclandestinum, but differs in its hamathecium, which is not inspersed. The species is widespread and has been observed in several countries across different continents.
Astrothelium testudineum is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. It is found in Brazil.
Fissurina amyloidea is a little-known species of script lichen in the family Graphidaceae. It is found in the primary rainforests of Rondônia, Brazil. It is characterized by its weakly carbonizedlirellae and thick-walled, strongly amyloid ascospores. Despite its superficial similarity to Fissurina subfurfuracea, F. amyloidea exhibits unique anatomical features that set it apart from other species within the genus.
Astrothelium conjugatum is a species of corticolous (bark-dwelling) crustose lichen in the family Trypetheliaceae, first described in 2016. It is known to occur in Sri Lanka.
Heterodermia fragmentata is a species of corticolous (bark-dwelling) foliose lichen in the family Physciaceae. It occurs in Sri Lanka.
Lecanactis minutissima is a species of corticolous (bark-dwelling), crustose lichen in the family Roccellaceae. Found in Sri Lanka, the lichen is characterised by its pale ochraceous thallus and sessile apothecia with dark brown discs, covered with thick white granular pruina.
Megalotremis cylindrica is a species of corticolous (bark-dwelling), lichen in the family Monoblastiaceae. It was described as a new species in 2016 based on a specimen collected from the Sinharaja Forest Reserve in Sri Lanka. The species is characterized by its unique pycnidia and absence of ascomata.
Trypethelium luteolucidum is a species of lichen in the family Trypetheliaceae, first formally described in 2016. Found in Brazil and Mexico, it is similar to Trypethelium regnellii, but differs by the presence of anthraquinone crystals in the pseudostromata.
Schistophoron muriforme is a species of corticolous (bark-dwelling), crustose lichen in the family Graphidaceae, first described in 2016. Found in Sri Lanka, it is characterised by its pale yellowish-white thallus and muriformascospores.
Psoroglaena spinosa is a species of lichen in the family Verrucariaceae, first described in 2016. It is characterized by its small fruticose (bushy) thallus, which is corticate, smooth, dull, and bright green, covering small areas and consisting of tiny squamules that branch into somewhat moniliform threads.
Porina monilisidiata is a species of corticolous (bark-dwelling), crustose lichen in the family Trichotheliaceae, first described in 2016. This species is characterised by its shiny, olive-green thallus with numerous isidia and low conical ascomata.
Porina microtriseptata is a species of corticolous, crustose lichen in the family Trichotheliaceae, first described in 2016. This species is distinguished by its shiny, olive-green thallus and hemispherical ascomata with pointed ascospores that are consistently hyaline, fusiform, and have three internal partitions (septa).
Astrothelium rubrocrystallinum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae, first described in 2016. It is found in Brazil.
Astrothelium globosum is a species of lichen in the family Trypetheliaceae. This species is characterised by its immersed ascomata and a thallus consisting of nearly spherical warts, along with distinctive 3-septate ascospores.
Astrothelium curvatum is a species of corticolous lichen in the family Trypetheliaceae. Found in Brazil, it was described as a new species in 2016. It is characterised by its immersed pyriform ascomata with lateral ostioles and bent, muriform ascospores.
