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.
Xanthoparmelia chlorochroa, known as the tumbleweed shield lichen or ground lichen, is a foliose lichen in the Parmeliaceae family. It is not fixed to a substrate, and blows around in the wind from location to location.
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.
Xanthoparmelia mougeotii is a species of foliose lichen belonging to the family Parmeliaceae.
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.
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.
Xanthoparmelia loxodes is a species of foliose lichen in the family Parmeliaceae. It was first formally described by Finnish botanist William Nylander in 1872, as Parmelia loxodes. In 1978, Ted Esslinger created the genus Neofuscelia, which contained species previously classified in Parmelia subgenus Neofusca; Neofuscelia loxodes was one of many species transferred here. In a 2004 molecular phylogenetic study published by Oscar Blanco, Ana Crespo, John A. Elix, David L. Hawksworth and H. Thorsten Lumbsch, they showed that Neofuscelia did not form a clade distinct from Xanthoparmelia, and they reduced it to synonymy under Xanthoparmelia.
Xanthoparmelia cumberlandia is a lichen which belongs to the Xanthoparmelia genus. It is also known as a member of the rockfrong lichens due to its coloration.
Xanthoparmelia semiviridis, also known as resurrection lichen is a foliose lichen species in the family Parmeliaceae. Its common name comes from the reaction of a dry sample to moisture. In its dry state it appears like curled-up dry leaf litter on the ground, but after rainfall the lichen will quickly recover, unfurl and become darker in colour. It is found in semi-arid areas across southern Australia and the South Island of New Zealand. The species is in decline in New Zealand because of the loss of habitat resulting from the establishment of dairy farms and vineyards in former indigenous habitat, and the deterioration of existing habitat caused by invasive species such as hawkweeds.
Xanthoparmelia perezdepazii is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae. It is found in the Canary Islands.
Xanthoparmelia californica is a lichen which belongs to the Xanthoparmelia genus. The lichen is uncommon and is listed as imperiled by the Nature Conservatory.
Xanthoparmelia subramigera is a lichen which belongs to the Xanthoparmelia genus.
Xanthoparmelia plittii is a lichen which belongs to the Xanthoparmelia genus.
Xanthoparmelia ajoensis is a lichen which belongs to the Xanthoparmelia genus. The lichen is uncommon and is listed as vulnerable by the Nature Conservatory.
Xanthoparmelia arida is a lichen which belongs to the Xanthoparmelia genus. The lichen is an arid shield lichen and is uncommon it is listed as apparently secure by the Nature Conservatory. It is noted for being similar to Xanthoparmelia joranadia.
Xanthoparmelia lecanorica is a lichen which belongs to the Xanthoparmelia genus. It is noted for being similar in appearance and has often been misidentified as Xanthoparmelia arida.
