| Xanthoparmelia perezdepazii | |
|---|---|
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Xanthoparmelia |
| Species: | X. perezdepazii |
| Binomial name | |
| Xanthoparmelia perezdepazii Pérez-Vargas, Hern.-Padr. & Elix (2007) | |
Xanthoparmelia perezdepazii is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae. It is found in the Canary Islands.
The lichen was formally described as a new species in 2007 by Israel Pérez-Vargas, Consuelo Hernández-Padron, and John Alan Elix. The type specimen was collected by the first two authors from Llano de la Santidad in Teide National Park (Tenerife) at an altitude of 2,000 m (6,600 ft), where it was found growing on basaltic rocks. The species epithet honours Professor Pedro Luis Pérez de Paz , "in recognition of his many contributions to Canarian lichenology". [1]
The lichen has a yellow-green thallus measuring 3–10 cm (1.2–3.9 in) wide; the lobes comprising the thallus are 1–2.5 mm (0.04–0.10 in) wide. Soredia are absent, but there is a dense covering of isidia on the thallus surface; these structures are initially spherical, later becoming cylindrical, and measuring up to 1 mm high. The medulla is white, while the lower thallus surface is mid- to dark-brown, but not blackened (as is typical with many other Xanthoparmelia species). Rhizines are simples (i.e., unbranched), more or less the same colour as the undersurface, and measure up to 1 mm long. Neither apothecia nor pycnidia were present in the type collection. The lichen products present in X. perezdepazii are usnic acid, constipatic acid, and protoconstipatic acid. [1]
Xanthoparmelia perezdepazii is only known to occur in the Canary Islands. Its habitat is the shrub-like community known as "retamar", found at high elevations, and featuring Cytisus supranubius , Pterocephalus lasiospermus , and Pinus canariensis . The lichen tends to be better developed in northeast-facing locations, where typical associating lichens include Lecanora rupicola , Rhizoplaca melanophthalma , Physcia albinea , Xanthoparmelia tinctina , and crustose species from the genera Aspicilia and Caloplaca . [1]
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.
Imshaugia is a genus of seven species of foliose lichens in the family Parmeliaceae. They are commonly known as starburst lichens.
Xanthoparmelia mougeotii is a species of foliose lichen belonging to the family Parmeliaceae.
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 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.
Hypotrachyna vainioi is a species of foliose lichen in the family Parmeliaceae. It is found in Brazil.
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.
Punctelia transtasmanica is a species of foliose lichen in the family Parmeliaceae. It is found in Australasia.
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".
Punctelia cedrosensis is a species of foliose lichen in the family Parmeliaceae. It is endemic to Mexico, where it grows on the bark of conifers.
Constipatic acid is a fatty acid found in several lichen species. It was isolated, identified, and named by Douglas Chester and John Alan Elix in a 1979 publication. The compound was extracted from the Australian leafy lichen called Xanthoparmelia constipata, which was collected on schist boulders west of Springton, South Australia. The related compounds protoconstipatic acid and dehydroconstipatic acid were also reported concurrently. Syo Kurokawa and Rex Filson had previously detected the compounds using thin-layer chromatography when they formally described the lichen as a new species in 1975, but had not characterised them chemically.
Cetrelia sayanensis is a species of foliose lichen in the family Parmeliaceae. Found in Europe, it was formally described as a new species in 2009 by lichenologists Tatyana Otnyukova, Nikolay Stepanov, and John Alan Elix. The type was collected along the Kulumys ridge on the West Sayan Mountains of southern Siberia. Here it was found growing on the bark of an old stem of Sorbus sibirica, at an altitude of 800 m (2,600 ft). It has also been collected in several neighbouring areas, all at altitudes between 400–930 m (1,310–3,050 ft), with the bark of Abies, Betula, Salix, and Sorbus as the typical substrates. In 2019, the lichen was recorded from Austria, its first reported occurrence in middle Europe.
Pseudoparmelia kalbiana is a species of foliose lichen in the family Parmeliaceae. It is found in South America.
Parmelia protosignifera is a species of foliose lichen in the large family Parmeliaceae. Found in Australasia, it was described as a new species in 1988 by lichenologists John Elix and Jen Johnston. The type specimen was collected on sheltered granite ledges in Eucalyptus woodland on the eastern slopes on Tinderry Peak in New South Wales. It has also been collected in Victoria, as well as South Island and Stewart Island of New Zealand.
Psiloparmelia salazinica is a species of foliose lichen in the family Parmeliaceae. It is found in South America.
Xanthoparmelia isidiovagans is a species of foliose lichen in the family Parmeliaceae
Xanthoparmelia micromaculata is a species of saxicolous (rock-dwelling), lichen in the family Parmeliaceae. Found in South Africa, it was formally described as a new species in 2002 by Australian lichenologist John Elix. The type specimen was collected from the summit of Waboomsberg mountain at an altitude of 1,220 m (4,000 ft). It is only known from the type locality. The lichen has a pale yellow-green, somewhat crustose thallus, reaching a diameter of up to 1 cm (0.4 in) wide. It contains several lichen products: stictic acid as a major metabolite, minor amounts of usnic acid, constictic acid, and hypostictic acid, and minor or trace amounts of norstictic acid, hyposalazinic acid, and cryptostictic acid. The species epithet refers to the prominent maculae on the thallus surface.
Xanthoparmelia waboomsbergensis is a species of foliose lichen in the family Parmeliaceae. It was formally described as a new species in 2002 by Australian lichenologist John Elix. The type specimen was collected from the summit of Waboomsberg mountain at an altitude of 1,220 m (4,000 ft). The species epithet refers to the type locality, the only place the lichen is known to occur.
Canoparmelia rarotongensis is a species of foliose lichen in the family Parmeliaceae. Found in Rarotonga, it was formally described as a new species in 2000 by Simone Louwhoff and John Elix. The type specimen was collected by the second author from the Muri Lagoon, where it was found growing on hibiscus along the foreshore. It is named for its type locality. The main physical characteristic that distinguishes it from others in its genus is its conspicuous isidia, which are consistently inflated and branched.
Flavoparmelia virensica is a species of corticolous (bark-dwelling), foliose lichen found in Western Australia, newly described in 2010. This species, belonging to the large family Parmeliaceae, is similar in appearance to Flavoparmelia rutidota and F. caperatula, but can be distinguished by its spindle-shaped conidia and significant quantities of virensic acid. The lichen grows on dead and burnt wood as well as the bark of trees from the genera Allocasuarina, Acacia, and Hakea.