| Pseudopyrenula serusiauxii | |
|---|---|
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Dothideomycetes |
| Order: | Trypetheliales |
| Family: | Trypetheliaceae |
| Genus: | Pseudopyrenula |
| Species: | P. serusiauxii |
| Binomial name | |
| Pseudopyrenula serusiauxii Aptroot (1998) | |
Pseudopyrenula serusiauxii is a species of lichen-forming fungus in the family Trypetheliaceae. It is found in Papua New Guinea. The lichen appears as a greenish discolouration on the trunks of Macaranga trees.
The lichen was formally described as a new species in 1998 by Dutch lichenologist André Aptroot. [1] The specific epithet honours Belgian lichenologist Emmanuël Sérusiaux, a colleague of the author who accompanied him on some collecting expeditions in the country. [2] The type was collected in the Balek Wildlife Sanctuary in Madang Province, where it was found growing on Macaranga tree trunk in the relics of a secondary forest. [1]
The lichen has a thallus that is immersed in the bark of its host, lacks a cortex, and appears as a greenish discoloration that is up to 5 cm (2 in) wide. The photobiont partner – a green alga of the genus Trentepohlia – is sparse in the thallus. The ascomata are more or less spherical, and small (measuring 0.2–0.4 mm in diameter) with black walls. They have flat ostioles, rather than conical ostioles that are typical of the genus Pseudopyrenula . The ascospores, which number 8 per ascus, are spindle-shaped (fusiform), have 3 septa, and feature angular, diamond-shaped lumina (interior spaces). The spores measure 30–39 by 6–8 μm. All lichen spot tests are negative, and no lichen substances were detected using thin-layer chromatography. [1]
Crustospathula is a genus of five species of crustose lichens in the family Malmideaceae. They are characterized by their stalked and sometimes branched cartilaginous soredia and Bacidia-like apothecia.
Traponora is a genus of lichen-forming fungi in the family Lecanoraceae. The genus was circumscribed in 2009 by Dutch lichenologist André Aptroot, with the Papua New Guinean Traponora asterella assigned as the type, and at that time, only species. Four newly described species were added to the genus in a 2009 publication, a species formerly in Pyrrhospora was transferred to the genus in 2017, and a new species from Australia added in 2018. Traponora lichens are predominantly from Australasia, with all species but one known to occur in Papua New Guinea.
Pseudopyrenula is a genus of lichen-forming fungi in the family Trypetheliaceae.
Menegazzia dissoluta is a species of corticolous (bark-dwelling), foliose lichen found in Papua New Guinea. It was formally described as a new species in 2001 by lichenologists Peter Wilfred James, André Aptroot, Emmanuël Sérusiaux, and Paul Diederich. The type specimen was collected by Harrie Sipman in Mount Gahavisuka Provincial Park (Goroka) at an altitude of 2,300 m (7,500 ft); there it was found growing as an epiphyte on a fallen Castanopsis tree in a mossy, mountainous forest. The species epithet dissoluta refers to the "irregularly finely wrinkled upper surface that dissolves into soredia".
Malmideaceae is a family of crustose and corticolous lichens in the order Lecanorales. It contains eight genera and about 70 species.
Emmanuël Sérusiaux is a Belgian lichenologist. His career, spanning more than four decades, has combined both lichenology research and political aspects of nature conservation. He spent several periods working as a researcher at the National Fund for Scientific Research and the University of Liège, the latter in which he accepted a faculty position as professor and head of the Plant Taxonomy and Conservation Biology unit. Sérusiaux also served for three non-consecutive appointments as Deputy Chief of Staff in the Government of Wallonia. He retired from both his academic and political positions in 2019.
Punctelia riograndensis is a species of foliose lichen in the family Parmeliaceae. Found in Africa and South America, it was formally described as a new species by Norwegian lichenologist Bernt Lynge in 1914, as Parmelia riograndensis. The type specimen was collected in 1892 from Porto Alegre Municipality in Rio Grande do Sul State (Brazil) by Swedish lichenologist Gustav Malme. In 1982, Hildur Krog circumscribed the genus Punctelia to contain Parmelia species with rounded pseudocyphellae, and P. riograndensis was one of the 22 species that she transferred to the new genus.
Enterographa serusiauxii is a species of leaf-dwelling lichen in the family Roccellaceae. It is found in Guadeloupe.
Pertusaria aptrootii is a species of crustose lichen in the family Pertusariaceae. It was described as a new species in 1998 by Alan W. Archer and John Alan Elix. The lichen occurs in Papua New Guinea, and is known from only two specimens collected at the type locality. The type was collected in Varirata National Park at an altitude of 800 m (2,600 ft), where it was found growing on conglomerate rock. It is named after Dutch lichenologist André Aptroot, who collected the type.
Astrothelium rubrostiolatum is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. Found in Brazil, it was formally described as a new species in 2017 by Marcela Eugenia da Silva Cáceres and André Aptroot. The type specimen was collected by the authors along a trail near a field station in the Adolfo Ducke Forest Reserve (Manaus); here it was found growing on tree bark in old-growth rainforest. The lichen has a dull yellowish thallus lacking a prothallus, with spherical to pear-shaped ascomata that are either immersed in or are below the thallus surface, typically arranged in groups of 7 to 25. The ascospores number eight per ascus, are muriform, and measure 90–125 by 25–30 μm. The species epithet refers to the red colour in the ostioles. Thin-layer chromatography revealed the presence of an anthraquinone that was presumed to be parietin.
Syncesia madagascariensis is a rare species of crustose lichen in the family Roccellaceae. Found in Madagascar, it was formally described as a new species in 2010 by Damien Ertz, Dorothee Killmann, Tahina Razafindrahaja, Emmanuël Sérusiaux, and Eberhard Fischer. The type specimen was collected south of Ambositra in Ankazomivady (Ambalamanakana) at an altitude of 1,705 m (5,594 ft). It is only known to occur at the type locality, where it grows on tree trunks in a montane forest of mostly Myrtaceae and Syzygium.
Astrothelium diaphanocorticatum is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. Found in Papua New Guinea, it was formally described as a new species in 2019 by lichenologists André Aptroot and Harrie Sipman. The type specimen was collected by Sipman on Mount Wilhelm at an altitude of 2,900 m (9,500 ft). The lichen has an olive-green to yellowish-green thallus that is strongly convex and swollen (bullate) and partially comprises small, roughly spherical globules. The thallus has a thick, clear cortex in which the algal cells can be visualised as green dots. It has roughly spherical ascomata, measuring 0.7–1.3 mm in diameter, which appear singly on the thallus surface, or, in some instances, fused together laterally. The ascospores are hyaline, ellipsoid in shape with three transverse septa, and measure 25–28 by 10–12 μm. The specific epithet diaphanocorticatum alludes to the transparent cortex.
Astrothelium macroeustomum is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. Found in French Guiana, it was formally described as a new species in 2019 by lichenologists André Aptroot and Harrie Sipman. The type specimen was collected by Sipman from the Piste Crique Limonade at an altitude of 300 m (980 ft). The lichen has a mostly smooth, pale ochraceous-brown thallus that is somewhat shiny and covers areas up to 9 cm (4 in) in diameter. It is surrounded by a dark brown prothallus. It has pear-shaped (pyriform) ascomata, measuring 0.6–1.0 mm in diameter, which mostly aggregate in groups of two to five, and are more or less immersed in the tissue of the bark, below the thallus surface. They have convex, black ostioles (pores) that are surrounded by a yellowish-white ring of pruina. The ascospores are hyaline, spindle-shaped (fusiform) with five septa and measure 50–55 by 12–17 μm. The lichen contains lichexanthone, a lichen product that causes the ostioles of the ascomata to fluoresce yellow when lit with a long-wavelength UV light. The specific epithet macroeustomum refers to both its large spores and its similarity to Astrothelium eustomum.
Astrothelium palaeoexostemmatis is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. Found in northern Thailand, it was formally described as a new species in 2019 by lichenologists André Aptroot and Harrie Sipman. The type specimen was collected near the Bhubing Palace at an altitude of 1,550 m (5,090 ft); here, it was found in an oak/chestnut forest. The lichen has a smooth and shiny, ochraceous-brown thallus that covers areas up to 5 cm (2 in) in diameter. It has roughly spherical ascomata, measuring 0.4–0.6 mm in diameter; they are covered by the thallus with only a black ostiole (pore) visible. The ascospores are hyaline and muriform and measure 85–100 by 20–24 μm. The specific epithet palaeoexostemmatis refers to both its Palaeotropical distribution and its resemblance to Astrothelium exostemmatis, a neotropical species.
Astrothelium studerae is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. Found in Brazil, it was formally described as a new species in 2019 by lichenologists André Aptroot and Marcela Eugenia da Silva Cáceres. The type specimen was collected by the authors from the Pedra Talhada Biological Reserve at an altitude between 500 and 700 m. The specific epithet studerae honours Anita Studer, "the protector of the isolated patch of Atlantic rainforest in Alagoas where the new species was collected".
Pseudopyrenula miniflavida is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. Found in Brazil, it was formally described as a new species in 2019 by lichenologists André Aptroot and A.D.Nunes. The type specimen was collected from Mata do IFS at an altitude of 50 m (160 ft). The lichen has a whitish-grey thallus without a cortex. It has hemispherical ascomata that are mostly black but sometimes partly covered with a whitish pruina. The hamathecium contains yellow oil droplets that dissolve but do not change colour in a solution of KOH. The ascospores are hyaline with three septa and measure 15–17 by 5.5–6.5 μm. The specific epithet miniflavida alludes to both its small spores as well as the characteristic yellow oil droplets in the hamathecium.
Astrothelium sipmanii is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. It is found in Guyana.
Astrothelium aeneoides is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. It is found in Brazil, Guyana, and Puerto Rico, where it grows on the smooth bark of rainforest trees.
Astrothelium elixii is a rare species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. It is found in the Beni Biological Station Biosphere Reserve in Bolivia.
Pyrenula luteopruinosa is a species of corticolous (bark-dwelling), crustose lichen in the family Pyrenulaceae. It has a neotropical distribution, occurring in Panama, Costa Rica, Puerto Rico, and Hawaii.