Diorygma fuscum

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Diorygma fuscum
Scientific classification Red Pencil Icon.png
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Ostropales
Family: Graphidaceae
Genus: Diorygma
Species:
D. fuscum
Binomial name
Diorygma fuscum
Jian Li bis & Z.F.Jia (2016)

Diorygma fuscum is a species of corticolous (bark-dwelling) crustose lichen in the family Graphidaceae. Found in China, it was formally described as a new species in 2016 by Jian Li and Ze-Feng Jia. The type specimen was collected from Wanmulin, Fangdao Town (Jian'ou, Fujian Province) at an altitude of 310 m (1,020 ft); here it was found growing on bark. The specific epithet fuscum ("brown") refers to the lichen's mature ascospores, which are brownish in colour. Secondary chemicals that occur in the lichen include stictic acid (major), and minor to trace amounts of constictic acid, hypostictic acid, and hypoconstictic acid. The presence of stictic acid helps distinguish this species from the similar Diorygma pruinosum . [1]

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<i>Diorygma</i> Genus of lichens

Diorygma is a genus of lichenized fungi in the family Graphidaceae. The genus was circumscribed by Franz Gerhard Eschweiler in 1824. Species of the genus are widely distributed in tropical and subtropical regions of the world.

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Menegazzia foraminulosa is a species of corticolous (bark-dwelling), foliose lichen that is endemic to New Zealand. The lichen was first formally described as a new species in 1876 by August von Krempelhuber. Friedrich Bitter transferred it to the genus Menegazzia in 1901. The species contains several lichen products, including depsides, depsidones, as well as fatty acids and pigments.

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Menegazzia bjerkeana is a rare species of foliose lichen in the family Parmeliaceae. It occurs in rainforests along the New South Wales-Queensland border, where it grows on the bark of southern beech trees.

Diorygma salazinicum is a rare species of lichen in the family Graphidaceae. Found in Thailand, it was formally described as a new species in 2014 by Jutarat Sutjaritturakan and Klaus Kalb. The type specimen was collected in Tambon Wangmai, where it was found growing on the bark of an unidentified deciduous tree. The lichen is only known from the type locality. The specific epithet refers to the presence of salazinic acid, a secondary chemical. Other compounds occurring in the lichen are stictic acid, minor amounts of cryptostictic acid and peristictic acid, as well as trace amounts of norstictic acid.

Eugeniella palleola is a species of corticolous (bark-dwelling) in the family Pilocarpaceae. Found in Nicauragua, it was formally described as a new species in 2015 by lichenologists Othmar Breuss and Robert Lücking. The type specimen was collected by Breuss in a montane rainforest on the Mombacho volcano at an altitude of 1,100 m (3,600 ft); here it was found growing on the smooth bark of small stems. The specific epithet palleola, meaning "rather pale", refers to the shade of the apothecial discs, which are lighter than other species of Eugeniella. Secondary chemicals that occur in the lichen include atranorin, stictic acid, and minor amounts of norstictic acid.

Lecanora hafelliana is a species of corticolous (bark-dwelling), crustose lichen in the family Lecanoraceae. It is found in South Korea and in China, where it is fairly common on the bark of deciduous trees such as maple, birch, dogwood, and oak. The lichen was formally described as a new species in 2011 by Lei Lü, Yogesh Joshi, and Jae-Seoun Hur. The type specimen was collected by Hur on Mount Baekwoon at an elevation of 1,037 m (3,402 ft). In China, it was recorded growing on the bark of Korean pine. The lichen has a dull whitish to ash-grey crust-like thallus with a definite margin, but lacking a prothallus. Lecanora hafelliana contains several secondary compounds, including atranorin, zeorin, usnic acid, a complex of compounds related to stictic acid, and hafellic acid. Its specific epithet alludes to the presence of this latter compound.

Pertusaria epacrospora is a rare species of corticolous (bark-dwelling), areolate lichen in the family Pertusariaceae. Found in Australia, it was formally described as a new species in 1991 by lichenologist Alan W. Archer. The type specimen was collected in Park Beach at sea level; here, it was found growing on trees in a coastal sand dune. The lichen has a thin, pale yellowish-green thallus lacking soredia and isidia. It has numerous wart-shaped apothecia, the same colour as the thallus, which measure 0.4–0.8 mm in diameter and which have a single, inconspicuous ostiole. The ascospores, which number 2 per ascus, are smooth and fusiform (spindle-shaped), typically measuring 125–150 μm long by 35–45 μm wide. Pertusaria epacrospora is only known to occur at the type locality. Secondary compounds found in the lichen are thiophaninic acid and stictic acid as major components, and minor to trace amounts of constictic acid and hypostictic acid.

Wirthiotrema xanthopustulatum is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. Found in Brazil, it was formally described as a new species in 2021 by lichenologists André Aptroot and Maria Fernanda de Souza. The type specimen was collected in Tagaçaba Porto da Linha on tree bark. It has a pale olivaceous, shiny metallic-green thallus that covers an area up to 10 cm (4 in) in diameter. It contains the secondary compounds protocetraric acid and lichexanthone. This latter compound causes the lichen thallus to fluoresce a yellow colour when shone with a long-wavelength UV light. Wirthiotrema santessonii is similar in appearance, but it contains stictic acid rather than protocetraric acid and lichexanthone.

Ocellularia neoleucina is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. Found in southeastern Thailand, it was formally described as a new species in 2002 by lichenologists Natsurang Homchantara and Brian J. Coppins. The type specimen was collected from Namtok Phlio National Park ; here, in a moist, lowland evergreen forest, it was found growing on Anisoptera costata. The lichen has a shiny, smooth, greenish thallus with a dense cortex and a white medulla with many crystals. Its ascospores are ellipsoid, thin walled, colourless, and typically measure 14.0–17.0 by 5.0–6.7 μm. It contains stictic acid, a secondary compound.

Acanthothecis roseola is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. Found in Brazil, it was formally described as a new species in 2022 by Shirley Cunha Feuerstein. The type specimen was collected from the Parque Estadual do Papagaio Charão. The lichen has a whitish to greenish, cracked thallus with a black prothallus. Crystals of calcium oxalate are abundant below the algal layer and the hamathecium. The lichen contains norstictic acid, stictic acid, and subnorstictic acid, which are lichen products that can be detected using thin-layer chromatography. The specific epithet roseola refers to the pinkish-coloured margins of the ascomata.

Carbacanthographis latispora is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. Found in Venezuela, it was formally described as a new species in 2022 by Shirley Cunha Feuerstein and Robert Lücking. The type specimen was collected near the savannah of La Esmeralda ; here, in the Amazon rainforest, the lichen was found growing on a dead branch. It is only known to occur at the type locality. It has a whitish-grey thallus that lacks both a cortex and a prothallus. Its ascospores typically measure 140–155 by 30–35 μm and have from 13 to 17 transverse septa. The specific epithet refers to its unusually broad ascospores. Stictic acid, cryptostictic acid, and constictic acid are lichen products that occur in this species.

Carbacanthographis megalospora is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. Found in Brazil, it was formally described as a new species in 2022 by Shirley Cunha Feuerstein and Robert Lücking. The type specimen was collected by the first author from the Augusto Ruschi Biological Reserve at an altitude of 800 m (2,600 ft). The lichen has a whitish grey thallus with a thin cortex and an underlying black prothallus. Its asci contain a single ascospore. These spores are hyaline, and typically measure 235–255 by 30–40 μm. The specific epithet alludes to the large spores, the largest known in genus Carbacanthographis. C. megalospora contains stictic acid, cryptostictic acid, and constictic acid, which are lichen products that can be detected using thin-layer chromatography.

Herpothallon polyisidiatum is a species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in China, it was formally described as a new species in 2022 by Pengfei Chen and Lulu Zhang. The type was collected from Mangshan National Forest Park at an elevation of 1,716 m (5,630 ft). The lichen contains stictic acid, a lichen product that can be detected using thin-layer chromatography. The species epithet refers to polyisidiatum refers to the pseudisidia, which are plentiful in this species.

Pseudochapsa aptrootiana is a species of corticolous (bark-dwelling) in the family Graphidaceae. Found in Brazil, it was formally described as a new species in 2018 by Marcela Eugenia da Silva Cáceres, Thamires Almeida Pereira, and Robert Lücking. The type specimen was collected from Mata do Cipó at an elevation of 80–100 m (260–330 ft); here, in an Atlantic Rainforest remnant, it was found in the forest understory. It has a light grey thallus lacking a prothallus and a cortex. Its ascospores, which number eight per ascus, are oblong to spindle-shaped (fusiform) with between 11 and 15 septa and measure 30–35 by 7–8 μm. Lichen products that occur in Pseudochapsa aptrootiana include stictic and constictic acid as major or submajor metabolites, and minor to trace amounts of cryptostictic, hypostictic, and acetylhypoconstictic acids. The species epithet honours Dutch lichenologist André Aptroot, "for his invaluable contributions to tropical lichenology".

<i>Coenogonium pineti</i> Species of lichen

Coenogonium pineti is a species of crustose lichen in the family Coenogoniaceae. It was first formally described by Erik Acharius in 1810, as Lecidea pineti. Robert Lücking and H. Thorsten Lumbsch transferred it to Coenogonium in 2004 after molecular phylogenetic analysis suggested its placement in that genus. The lichen has a widespread distribution in cooler, temperate regions of the Northern Hemisphere, but has also been recorded from southeastern mainland Australia and Tasmania.

Diorygma incantatum is a species of corticolous (bark-dwelling) crustose lichen in the family Graphidaceae. It is found in northern and southern Brazil.

References

  1. Li, Jian; Jia, Ze-Feng (2016). "Diorygma fuscum sp. nov. from China". Mycotaxon. 131 (3): 717–721. doi:10.5248/131.717.