Parmelia is a genus of medium to large foliose lichens. It has a global distribution, extending from the Arctic to the Antarctic continent but concentrated in temperate regions. There are about 40 species in Parmelia. In recent decades, the once large genus Parmelia has been divided into a number of smaller genera according to thallus morphology and phylogenetic relatedness.
The Parmeliaceae is a large and diverse family of Lecanoromycetes. With over 2700 species in 71 genera, it is the largest family of lichen-forming fungi. The most speciose genera in the family are the well-known groups: Xanthoparmelia, Usnea, Parmotrema, and Hypotrachyna.
Pseudevernia is a genus of foliose lichens in the family Parmeliaceae. The type species of the genus, Pseudevernia furfuracea, has substantial commercial value in the perfume industry.
Hypogymnia is a genus of foliose lichens in the family Parmeliaceae. They are commonly known as tube lichens, bone lichens, or pillow lichens. Most species lack rhizines that are otherwise common in members of the Parmeliaceae, and have swollen lobes that are usually hollow. The lichens usually grow on the bark and wood of coniferous trees.
Parmotrema is a genus of lichen belonging to the family Parmeliaceae. It is a large genus, containing an estimated 300 species, with a centre of diversity in subtropical regions of South America and the Pacific Islands.
Xanthoparmelia is a genus of foliose lichen in the family Parmeliaceae. Xanthoparmelia is synonymous with Almbornia, Neofuscelia, Chondropsis, Namakwa, Paraparmelia, and Xanthomaculina. This genus of lichen is commonly found in the United States, as well as Australia, New Zealand and Ecuador.
Everniopsis is a fungal genus in the family Parmeliaceae. It consists of a single species, the bark-dwelling lichen Everniopsis trulla, which occurs in Africa and South America.
Parmotrema betaniae is a species of corticolous lichen in the family Parmeliaceae that is found in Venezuela. It was described as a new species in 1986 by lichenologist Mason Hale. The holotype was collected in Táchira State, in the valley of Páramo de Tamá, at an elevation of 2,300 metres (7,500 ft). It has also been recorded from Bolivia. Its thallus measures up to 14 cm (5.5 in) in diameter. It is characterized by the pigmentation of most of its medulla, coloured pale orange or salmon-red to yellow.
Parmotrema soredioaliphaticum is a species of saxicolous lichen in the family Parmeliaceae. Found in South America, it was described as new to science in 1998. The holotype was collected in Cerro Colorado in northern Córdoba Province, Argentina, where it was found growing on a rock. The thallus of the lichen is foliose, with a pale grey colour, and measures up to 10 cm (4 in) across. It is a morph of the species Parmotrema alidactylatum with sorediate dactyls. Parmotrema soredioaliphaticum was reported from Bolivia in 2012.
Parmotrema abessinicum is a species of corticolous lichen in the family Parmeliaceae. It has been recorded from Africa, Asia, and Oceania.
Parmotrema abnuens is a species of corticolous lichen in the family Parmeliaceae. It was first introduced to science in 1885 as a species of Parmelia by William Nylander in 1885, who described the lichen from samples collected in Uruguay. Mason Hale transferred it to the genus Parmotrema in 1974. The species has also been recorded from Brazil and India.
Parmotrema aldabrense is a species of lichen in the family Parmeliaceae that is found in Africa. It was first described by Carroll William Dodge in 1959 as a species of Parmelia. Mason Hale transferred it to the genus Parmotrema in 1974. The type collection was made in the Aldabra Islands, where it was found growing on tamarind. It has also been recorded from Madagascar. The lichen has an olive-buff coloured thallus measuring up to 14 cm (5.5 in) in diameter.
Parmotrema amboimense is a species of lichen in the family Parmeliaceae that is found in Africa. It was first described by Carroll William Dodge in 1959 as a species of Parmelia. Mason Hale transferred it to the genus Parmotrema in 1974. The type collection was made in Cuanza Sul Province (Angola), where it was found growing at an elevation of 1,000 m (3,300 ft); Dodge also noted the presence of the lichen in Cameroon and Uganda. Parmotrema amboimense has a pale olive-buff coloured thallus measuring up to 10 cm (4 in) in diameter.
Crespoa is a genus of five species of lichen in the family Parmeliaceae. Species in this genus are characterized by having an upper thallus surface that is wrinkled and reticulately ridged to coarsely foveolate.
Parmotrema zollingeri is a species of lichen in the family Parmeliaceae. It was originally described in 1860 as a species of Parmelia by German lichenologist Johann Adam Philipp Hepp, and named after Swiss botanist Heinrich Zollinger. Mason Hale transferred it to the genus Parmotrema in 1974.
Parmotrema andinum is a species of lichen in the family Parmeliaceae. It was first described as new to science in 1879 by Johannes Müller Argoviensis as a species of Parmelia. Mason Hale transferred it to Parmotrema in 1975. It is found in Africa, Asia, and South America. In Mauritania, this species is used as tobacco. A metabolomic analysis of this lichen revealed the presence of 30 secondary compounds.
Parmotrema arnoldii, commonly known as the powdered ruffle lichen, is a widely distributed species of lichen in the family Parmeliaceae. It has been recorded from Africa, Asia, Europe, Oceania, Macaronesia, and North and South America.
Parmotrema gardneri is a species of foliose lichen in the family Parmeliaceae. It was first formally described in 1955 by Carroll William Dodge as Parmelia gardneri, from specimens collected in Brazil. Emmanuël Sérusiaux transferred it to the genus Parmotrema in 1984. In addition to South America, it is also found in Africa, Asia, and North America.
Salazinic acid is a depsidone with a lactone ring. It is found in some lichens, and is especially prevalent in Parmotrema and Bulbothrix, where its presence or absence is often used to help classify species in those genera.
