Sagenidiopsis isidiata is a species of corticolous (bark-dwelling) byssoid lichen in the family Arthoniaceae. Found in tropical montane rainforests throughout Central America, South America, and the Antilles, it was described as new to science in 2011. The lichen is characterised by its cream-coloured to greyish thallus and numerous pseudoisidia, which are small, cylindrical outgrowths on its surface.
Herpothallon is a genus of crustose lichens in the family Arthoniaceae. It has about 50 species.
Herpothallon capilliferum 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 Dayang Lake Nature Reserve at an elevation of 1,405 m (4,610 ft); here the lichen was found growing on Nyssa sinensis. The main characteristics of the species are the presence of norstictic acid as a major lichen product, and the projecting hyphae of the pseudisidia. The species epithet capilliferum refers to this latter characteristic.
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.
Herpothallon subglobosum 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 in Baimaluo at an elevation of 2,100 m (6,900 ft). The lichen contains gyrophoric acid, lecanoric acid, and umbilicaric acid, which are lichen products that can be detected using thin-layer chromatography. The species epithet subglobosum refers to the somewhat spherical pseudisidia.
Heiomasia is a genus of corticolous (bark-dwelling), crustose lichens in the family Graphidaceae. It has five species.
Herpothallon tricolor is a rare species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in South Brazil, it was described as a new species in 2017. It is distinguished from others species in genus Herpothallon by its unique colouration: a combination of a grey thallus with a bright red hypothallus and orange-tipped pseudoisidia.
Herpothallon pustulatum is a species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. It was formally described as new to science in 2009 by the lichenologist Göran Thor. It is found in montane forests in Costa Rica, Brazil, and Venezuela. It contains confluentic acid as its major lichen product along with trace amounts of several other substances.
Herpothallon nigroisidiatum is a little-known species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in Peru, it was formally described as new to science in 2009 by the lichenologist Göran Thor. It contains neodiffractic acid as its major lichen product, along with trace amounts of confluentic acid and chiodectonic acid. It is only known to occur at its type locality, which is a tropical rainforest in the Cordillera Escalera, San Martín. The species epithet nigroisidiatum refers to its pseudisidia, which have a black hypothallus that sometimes projects up into their inner parts and colours them black.
Herpothallon minimum is a species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Originally described from specimens collected in Costa Rica, the lichen was formally described as new to science in 2009 by the lichenologists André Aptroot and Robert Lücking. It is also found in Africa and South America, in lower-elevation mountainous rainforests. Herpothallon minimum is the only species of Herpothallon that produces the substance 2'-O-methylperlatolic acid as its major secondary metabolite.
Herpothallon hypoprotocetraricum is a little-known species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in Tanzania, it was formally described as new to science in 2009 by the lichenologist Göran Thor. The type specimen was collected by Edit Farkas in 1989 from a rocky forest on the south-east slope of Mount Kanga, a hill of the Nguru Mountains in the Mvomero district, Morogoro, Tanzania, at an altitude between 1,200 and 1,300 m. It is only known to occur at the type locality. The lichen contains hypoprotocetraric acid as its major lichen substance, along with minor amounts of chiodectonic acid and trace amounts of several other lichen products.
Herpothallon globosum is a little-known species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in São Tomé and Príncipe, it was formally described as new to science in 2009 by the lichenologist Göran Thor. It contains psoromic acid and chiodectonic acid as major lichen products. The lichen is known only from two old collections made by Moller in 1885, at altitudes of 1,200 and 1,500 m. The species epithet refers to its numerous globose (spherical) and unbranched isidia.
Herpothallon furfuraceum is a species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in Costa Rica, it was formally described as new to science in 2009 by the lichenologist Göran Thor. It is only known to occur in two locations in Costa Rica, at elevations ranging from 900 to 1,350 m. It contains confluentic acid and chiodectonic acid as major lichen products. The authors suggest that because this lichen resembles a more weakly pigmented version of the more common and widespread Herpothallon rubrocinctum, it may be commonly overlooked by collectors.
Herpothallon elegans is a rare species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in Peru, it was formally described as new to science in 2009 by the lichenologist Göran Thor. It contains confluentic acid and lichexanthone as major lichen products. It is only known to occur in tropical rainforest at a couple of locations, with elevations of 850 m (2,790 ft) and about 1,200 m (3,900 ft).
Herpothallon corallinum is a little-known species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in the Democratic Republic of the Congo, it was formally described as new to science in 2009 by the lichenologist Göran Thor. It contains confluentic acid as a major lichen product and various others as minor products and trace metabolites. The species is only known from two old collections, including the type collection, made in 1898, both in a lowland rainforest on the western shore of Lake Tanganyika.
Herpothallon confusum is a little-known species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in Venezuela, it was formally described as new to science in 2009 by the lichenologist Göran Thor. It contains confluentic acid and 2'-O-methylevernic acid as major lichen products, evernic acid as a minor metabolite, and trace amounts of chiodectonic acid. The lichen is only known from a couple of documented collections made in lowland rainforests.
Herpothallon confluenticum is a species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Originally described from specimens collected in Thailand, it was formally described as new to science in 2009 by the lichenologists André Aptroot and Robert Lücking. The lichen has also been recorded in other localities in Asia, Australia, and South America. It contains confluentic acid as a major lichen product.
Herpothallon cinereum is a little-known species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in Venezuela, it was formally described as new to science in 2009 by the lichenologist Göran Thor. It contains confluentic acid as its major lichen product. The lichen is only known to occur at its type locality in a tropical rainforest in Sierra Portuguesa (Lara) at an elevation of about 1,000 m (3,300 ft).
Herpothallon brialmonticum is a little-known species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in Suriname, it was formally described as new to science in 2009 by the lichenologists André Aptroot and John Elix. The species epithet refers to the three novel lichen products found in the lichen: brialmontic acid, methylbrialmontic acid, and dimethylbrialmontic acid. In addition to these compounds, all related to brialmontin 2, the lichen also has confluentic acid as a major secondary metabolite. This neotropical lichen is only known to occur at the type locality.
Herpothallon adnatum is a little-known species of corticolous (bark-dwelling), crustose lichen in the family Arthoniaceae. Found in Peru, it was formally described as new to science in 2009 by the lichenologist Göran Thor. The type specimen was collected from Paucartambo,, at an elevation of 850 m (2,790 ft). The species is only known to occur at the type locality. It contains confluentic acid as its major lichen product, along with trace amounts of a few others.
