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.
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.
Psiloparmelia is a genus of lichen belonging to the family Parmeliaceae. It contains 13 Southern Hemisphere species, most of which are found growing on rocks at high elevations in South America. There are several characteristic features of the genus that are used to distinguish it from the morphologically similar genera, such as Arctoparmelia, Flavoparmelia, and Xanthoparmelia. These include a dark, velvety lower thallus surface that usually lacks rhizines, a negative test for lichenan, and a high concentration of usnic acid and atranorin in the cortex.
Esslingeriana is a fungal genus in the family Parmeliaceae. The genus is monotypic, containing the single foliose lichen species Esslingeriana idahoensis, commonly known as the tinted rag lichen. It is found in northwestern North America.
Xanthoparmelia mougeotii is a species of foliose lichen belonging to the family Parmeliaceae.
Xanthoparmelia lavicola is a species of lichen in the family Parmeliaceae that can be found in Mexico north to Arizona and California in the United States. It has also been found in Ecuador. Xanthoparmelia lavicola grows in dry habitats on acidic rocks. It has been called the trochanter lichen.
Xanthoparmelia tinctina is a species of lichen from the family Parmeliaceae that can be found in Arizona, California, Northern Africa and Europe. The upper surface is yellow–green, while the bottom surface is brown and flat, measuring 0.2–0.6 millimetres (0.0079–0.0236 in) in diameter. The apothecia are 2–10 millimetres (0.08–0.39 in) wide, the thallus is laminal and is 3–10 centimetres (1–4 in) in diameter. The disc is either cinnamon-brown or dark brown and is ellipsoided. The pycnidia are immersed, and the conidia are bifusiform, with 8-spored asci that are hyaline and ellipsoid.
Xanthoparmelia conspersa, commonly known as the peppered rock-shield, is a foliose lichen and the type species of genus Xanthoparmelia. It is widely distributed in temperate zones, and has been recorded from Japan, Europe, Africa, North America, and South America.
Xanthoparmelia mexicana, commonly known as the salted rock-shield, is a foliose lichen in the family Parmeliaceae. It grows in 4–10 cm diameter rosettes of gray-green to yellow-green lobes in arid climates all over the world.
Xanthoparmelia scabrosa, jocularly known as sexy footpath lichen or sexy pavement lichen, is a foliose lichen in the family Parmeliaceae. It tolerates a very wide range of substrata, predominantly rock but also tree bark, roofing tiles, glass, and in wetter areas bitumen paths and roads.
Arctoparmelia separata, commonly known as the rippled ring lichen, is a species of foliose, ring lichen in the family Parmeliaceae with a roughly circumpolar distribution.
Xanthoparmelia lineola, commonly known as the tight rock-shield, is a foliose lichen species in the genus Xanthoparmelia. It is a common species with a temperate distribution. Found in North America and South Africa, it grows on rocks.
Bulbothrix meizospora is a species of foliose lichen in the family Parmeliaceae. It is found in Africa, Asia, and South America, where it grows on tree bark.
Xanthoparmelia serusiauxii is a species of foliose lichen in the family Parmeliaceae. Found in Namibia, it was formally described as a new species in 1986 by American lichenologist Mason Hale. The type specimen was collected by Hale from the Laguneberg Mountains, southeast of Cape Cross. There, it is common on dolerite boulders and small, flat pebbles. The specific epithet honours Emmanuël Sérusiaux, who, according to Hale, "was the first lichenologist to collect this unusual lichen in Namibia".
Xanthoparmelia kalbii is a species of foliose lichen in the family Parmeliaceae. Found in Brazil, it was described as a species new to science in 1984 by American lichenologist Mason E. Hale. The type was collected in Catimbau National Park in Pernambuco. The specific epithet honours Klaus Kalb, "the first professional lichenologist to collect extensively in Brazil since G. A. Malme in the 1890s".
Xanthoparmelia perezdepazii is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae. It is found in the Canary Islands.
Xanthoparmelia plittii is a lichen which belongs to the Xanthoparmelia genus.
Xanthoparmelia angustiphylla is a foliose lichen that belongs to the genus Xanthoparmelia.
Xanthoparmelia montanensis is a lichen which belongs to the Xanthoparmelia genus, it is also known as the Montana Rock-shield Lichen.
Xanthoparmelia wyomingica is a foliose lichen that belongs to the genus Xanthoparmelia.
