Cetradonia is a lichen genus in the family Cladoniaceae. A monotypic genus, Cetradonia contains the single species Cetradonia linearis. The genus was circumscribed in 2002 by Jiang-Chun Wei and Teuvo Ahti. The genus was once placed in the family Cetradoniaceae until that family was subsumed into the Cladoniaceae in 2006.
Stirtonia is a genus of lichen-forming fungi in the family Arthoniaceae. It contains 22 species of corticolous (bark-dwelling) crustose lichens found primarily in tropical regions. The genus was circumscribed by the British lichenologist Annie Lorrain Smith in 1926, with Stirtonia obvallata assigned as the type species. The species epithet honours the Scottish lichenologist James Stirton.
Aderkomyces thailandicus is a species of corticolous (bark-dwelling), crustose lichen in the family Gomphillaceae. Found in the lower montane rainforests of Thailand, it was described as new to science in 2011.
Calopadia cinereopruinosa is a species of corticolous (bark-dwelling) lichen in the family Pilocarpaceae. Found in the Galápagos Islands, it was described as new to science in 2011. It is characterized by its grey-black, white-pruinose apothecia and aeruginous hypothecium. This lichen usually grows on the bark of stems and twigs in the humid zones of the islands.
Sticta venosa is a species of terricolous (ground-dwelling), foliose lichen in the family Peltigeraceae. It is known only from Pichincha Province, Ecuador, and from Colombia. It was described as new to science in 2011.
Cladonia sobolescens, commonly known as the peg lichen, is a species of fruticose lichen. It is found in temperate eastern North America and East Asia.
Cladonia alpina is a species of fruticose lichen that is in the family Cladoniaceae. It has been found in Japan, Norway, and the United Kingdom.
Cladonia rei, commonly known as the wand lichen, is a species of ground-dwelling, fruticose lichen in the family Cladoniaceae. It is a widely distributed species, having been reported from Africa, Asia, Australasia, Europe, and North America. It is identified by its slightly dirty-colored, rough-surfaced, slender podetia that grow up to 9 cm (3.5 in) tall. Diagnostic characters of the lichen include the continuously sorediate, green-and-brown-mottled, podetia that taper upward to a point, while chemically, it contains homosekikaic and sekikaic acids. Its reduced capacity to bioaccumulate toxic heavy metals from its surroundings, as well as its ability to switch photobiont partners, allows the lichen to colonize and survive highly polluted habitats. There are several other Cladonia species that are somewhat similar in appearance, but can be distinguished either by subtle differences in morphology, or by the secondary chemicals they contain.
Cladonia trassii is a species of fruticose lichen in the family Cladoniaceae. It has a circumpolar distribution and is found in arctic/alpine and subarctic habitats.
Cladonia longisquama is a species of fruticose lichen in the family Cladoniaceae. It occurs in the Seychelles, where it grows on moss-covered rocks.
Cladonia vescula is a species of fruticose lichen in the family Cladoniaceae. It is known for its small size and unique chemical composition. It can be found in the montane cloud forests and pre-Andean Amazonian forests of Bolivia and Peru, where it grows on mineral soil mixed with humus. This species closely resembles Cladonia peziziformis and Cladonia corymbosula in morphology, but it is more slender and almost entirely lacking a cortex.
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.
Megalospora galapagoensis is a species of corticolous (bark-dwelling), crustose lichen in the family Megalosporaceae. It is endemic to the Galápagos Islands. The lichen has a yellowish grey to whitish grey, glossy, and thick thallus that can grow up to 20 cm in diameter and has soredia evolving from coarse, corticated granules into confluent formations. Its apothecia are round, grey-black to black, and glossy.
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.
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.
Cladonia monomorpha is a species of terricolous (ground-dwelling), fruticose lichen in the family Cladoniaceae. It is part of the Cladonia pyxidata group, known for brown apothecia on cup-shaped podetia.
Cladonia cayennensis is a species of fruticose lichen in the family Cladoniaceae. It is found in French Guiana, although the authors suggest that its distribution might be more widespread.
Cladonia flavocrispata is a species of fruticose lichen in the family Cladoniaceae. Found in Venezuela and described as a new species in 2013, it is closely related to Cladonia hians, but is distinguished by its unique chemical composition and morphology.
Cladonia nitidella is a species of fruticose lichen in the family Cladoniaceae. It is found in New Zealand, where it grows on bare soil and among mosses in often moist, partially sun-exposed habitats. It was formally described as a new species in 2003 by the lichenologist Samuel Hammer. He collected the type specimen from Rainbow Reach above Waiau River, about 10 km south of Te Anau, at an elevation of 200 m.
