| Myelochroa salazinica | |
|---|---|
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Myelochroa |
| Species: | M. salazinica |
| Binomial name | |
| Myelochroa salazinica Sheng L.Wang, J.B.Chen & Elix (2001) | |
Myelochroa salazinica is a species of foliose lichen in the family Parmeliaceae. Found in China, it was described as a new species in 2001 by Sheng-Lan Wang, Jian-Bin Chen, and John Alan Elix.
The type specimen was collected from Mount Gongshan (Yunnan) at an altitude of 1,500 m (4,900 ft); here it was found growing on a rock. Its specific epithet refers to the presence of salazinic acid, a secondary chemical rare in Myelochroa , and at the time of its publication, the only member of the genus to contain this chemical as the main metabolite of the medulla. [1]
Myelochroa salazinica has a foliose (leafy), pale mineral-grey thallus measuring 5–6 cm (2.0–2.4 in) wide. It lacks isidia but has regions of soredia around the margins of the thallus that sometimes coalesce into large soralia. The medulla is white to yellow. The thallus undersurface is black, with many simple (unbranched) black rhizines that functions as holdfasts. In addition to salazinic acid, zeorin, and leucotylic acid as the major secondary compounds, the lichen also contains minor amounts of atranorin and consalazinic acid, and trace amounts of galbinic acid and pigmentosin B. [1]
Myelochroa salazinica is found in a few locations in Yunnan, China. It has been recorded growing both on rock and on bark, and at elevations ranging from 1,200 to 3,200 m (3,900 to 10,500 ft). [1]
Myelochroa is a genus of foliose lichens in the family Parmeliaceae. They are commonly known as axil-bristle lichens. It was created in 1987 to contain species formerly placed in genus Parmelina that had a yellow-orange medulla due to the presence of secalonic acids. Characteristics of the genus include tightly attached thalli with narrow lobes, cilia on the axils, and a rhizinate black lower surface. Chemical characteristics are the production of zeorin and related triterpenoids in the medulla. Myelochroa contains about 30 species, most of which grow on bark. The genus has centres of distribution in Asia and North America.
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.
Parmotrema albinatum is a species of foliose lichen in the family Parmeliaceae that is found in Hawaii. It was originally described in 2001 as Rimelia albinata. Later phylogenetic analysis demonstrated that the genus Rimelia was synonymous with Parmotrema, so this species was transferred to that genus. The lichen is characterized by the sorediate and short-lacinulate thallus with salazinic acid in the medulla and traces of lobaric acid. The upper surface of the thallus is whitish, which probably a result of the thickness of the thick upper cortex.
Remototrachyna is a genus of foliose lichens in the large family Parmeliaceae. It was separated from the genus Hypotrachyna based on the structure of the excipulum and genetic differences.
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.
Punctelia nebulata is a species of foliose lichen in the family Parmeliaceae. Found in Australia, it was formally described as a new species in 1988 by lichenologists John A. Elix and Jen Johnston. The type was collected in New South Wales, on a roadside north of Gilgandra. The lichen grows on Callitris trees in semi-arid, inland regions of southern Australia.
Punctelia punctilla is a species of foliose lichen in the family Parmeliaceae. It is found in Africa, South America, and North America, where it grows on bark and on rocks. The main characteristics that distinguish Punctelia punctilla from other species of Punctelia are the presence of isidia on the thallus surface, a pale brown thallus undersurface, and the presence of lecanoric acid in the medulla.
Parmelia ernstiae is a species of foliose lichen in the family Parmeliaceae. It occurs in Europe.
Pseudoparmelia kalbiana is a species of foliose lichen in the family Parmeliaceae. It is found in South America.
Punctelia diffractaica is a species of foliose lichen in the family Parmeliaceae. It is found in Peru.
Parmelia hygrophiloides is a species of foliose lichen in the family Parmeliaceae. Found in India, it was described as a new species in 2003 by lichenologists Pradeep Divakar, Dalip Kumar Upreti, and John Elix. The type specimen was collected in the Parbati River Valley in Himachal Pradesh, at an elevation of 2,400 m (7,900 ft); here it was found growing on the trunk of a pine tree.
Allocetraria corrugata is a species of foliose lichen in the family Parmeliaceae. It is found in high-elevation locations in Yunnan, China, where it grows on rocks with mosses.
Hypogymnia flavida is a species of foliose lichen in the family Parmeliaceae. It is found in mountainous locations of east Asia, where it grows on the bark and wood of woody plants. It has a relatively large yellowish thallus.
Menegazzia subtestacea is a species of foliose lichen in the family Parmeliaceae. It is found in Tasmania (Australia), where it grows at high elevations on the twigs and young branches of alpine shrubs.
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.
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