| Xanthoparmelia auricampa | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Xanthoparmelia |
| Species: | X. auricampa |
| Binomial name | |
| Xanthoparmelia auricampa Elix (2006) | |
 | |
| Location of the holotype in Western Australia | |
Xanthoparmelia auricampa is a little-known species of terricolous (ground-dwelling), foliose lichen in the family Parmeliaceae. [1] It is endemic to Western Australia.
Xanthoparmelia auricampa was described by John Elix, who distinguished it from closely related species due to its unique chemical profile and specific morphological characteristics. The type specimen (holotype) was collected by Elix on 24 April 2004, and is housed at the Western Australian Herbarium (PERTH). The collection site is located in Western Australia, 2.5 km east of Bullabulling and 27.5 km west of Coolgardie, at an elevation of 440 metres. The specimen was found growing on soil in a Eucalyptus woodland habitat with Acacia and other shrubs, characterised by laterite outcrops. The species epithet auricampa is derived from Latin, combining aurum (gold) and campus (field), alluding its discovery in the goldfield regions of Western Australia. [2]
Xanthoparmelia auricampa forms small foliose to somewhat fruticose rosettes, loosely adnate to the substrate , and typically 2–3 cm wide. The lobes of the lichen are more or less linear, 0.8–1.5 mm wide, and show dichotomous to trichotomous branching. The upper surface is yellow-green, becoming rugulose and brown at the tips as it matures. Unlike many lichens, it lacks isidia and soredia but features small, somewhat cylindrical lobules that are terminal on the lobes. The lower surface of the lichen is pale to dark brown, canaliculate (channeled), and smooth with moderately dense, simple or occasionally branched, black rhizines. [2]
Chemically, the lichen cortex does not react to potassium hydroxide solution (K−), while the medulla is K+ (yellow then red). It contains usnic acid and a combination of lichen products including norstictic, hypostictic, and hyposalazinic acids. [2]
Xanthoparmelia auricampa is most similar to X. terrestris , sharing comparable morphology and norstictic acid content in the medulla. However, X. auricampa is distinguished by its smaller rosettes (2–3 cm vs 5–10 cm), narrower lobes (0.8–1.5 mm vs 1–3 mm), and distinct medullary chemistry. While X. terrestris contains salazinic acid (major), norstictic acid, consalzinic acid, and protocetraric acid, X. auricampa uniquely features norstictic acid as its major compound, along with minor amounts of hypostictic, hyposalazinic, and connorstictic acids. X. auricampa's distinctive traits include its small foliose thallus, yellow-green convex upper surface, di- to trichotomously branched lobes, brown canaliculate lower surface, and presence of subterete lobules without isidia. [2]
Xanthoparmelia auricampa is known exclusively from its type locality in Western Australia. [2]
Xanthoparmelia is a genus of foliose lichens in the family Parmeliaceae. This genus of lichen is commonly found in the United States, South America, southern Africa, Europe, Australia, and New Zealand.
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.
Relicina colombiana is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae. Found in high-elevation páramo of the Eastern Cordillera in Colombia, it was described as new to science in 2011.
Xanthoparmelia maricopensis, the Maricopa rock-shield, is a 2–6 cm (0.8–2.4 in) wide, yellow-green foliose lichen in the Parmeliaceae family. It grows on igneous rock in southwestern North American deserts.
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.
Xanthoparmelia isidiovagans is a species of foliose lichen in the family Parmeliaceae
Xanthoparmelia perezdepazii is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae. It is found in the Canary Islands.
Xanthoparmelia nomosa is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae. It is found in Tasmania, Australia.
Xanthoparmelia somervilleae is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae. It is found in Tasmania, Australia.
Hypotrachyna constictovexans is a little-known species of foliose lichen in the family Parmeliaceae. Known only from a single specimen collected in 1976, it is found in the highlands of Peru. Its thallus can grow over 5 cm wide, featuring long, straight, and separate lobes that are highly convex and tube-like, with a pale grey, slightly shiny upper surface adorned with cylindrical isidia.
Xanthoparmelia alligatensis is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae, described by John Elix in 2006. The species is native to South Australia, specifically found in the Mount Remarkable National Park.
Xanthoparmelia cranfieldii is a species of foliose lichen in the family Parmeliaceae, first described by John Elix in 2003. It is known only from its type locality in Western Australia.
Xanthoparmelia elevata is a species of foliose lichen in the family Parmeliaceae, described by John Alan Elix in 2003. It is found exclusively in Western Australia, growing on granite outcrops in the region's southwest.
Xanthoparmelia kimberleyensis is a species of foliose lichen in the family Parmeliaceae, described by John Alan Elix in 2003. It is endemic to the Kimberley region of Western Australia.
Xanthoparmelia monadnockensis is a species of foliose lichen in the family Parmeliaceae, described by John Elix in 2003. It is native to Western Australia, particularly found in the Monadnocks Nature Reserve near Jarrahdale.
Xanthoparmelia nanoides is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae, described by John Elix in 2003. This species is endemic to Western Australia and known only from its type locality near Albany.
Xanthoparmelia toolbrunupensis is a species of foliose lichen in the family Parmeliaceae, first described scientifically by the lichenologist John Elix in 2003. This species is endemic to Western Australia, with a distribution limited to the Stirling Range.
Xanthoparmelia nortegeta is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae, described by John Elix in 2003. This lichen is endemic to Western Australia, particularly the Boyagin Nature Reserve.
Xanthoparmelia sleei is a species of foliose lichen in the family Parmeliaceae, first described by John Alan Elix in 2003. It is endemic to Australia, with known occurrences in Western Australia and South Australia.