Dirina arabica
From Wikipedia, the free encyclopedia
| Dirina arabica | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Arthoniomycetes |
| Order: | Arthoniales |
| Family: | Roccellaceae |
| Genus: | Dirina |
| Species: | D. arabica |
| Binomial name | |
| Dirina arabica Tehler & Ertz (2013) | |
Dirina arabica is a species of saxicolous (rock-dwelling), crustose lichen in the family Roccellaceae.[1] Found in Socotra, it was formally described as a new species in 2013 by lichenologists Anders Tehler and Damien Ernst. The type specimen was collected by the first author near the village in Homill, at an altitude of 350 m (1,150 ft). The species epithet refers to Arabia, the geographical location encompassing the type locality. The lichen is endemic to Socotra, where it grows on Eocene limestone rocks. It has a creamy-white, slightly pruinose thallus that is 0.1–0.5 mm thick and a chalk-like medulla. There are no soralia on the thallus. The ascomata have a circular outline and measure up to 2.0 mm in diameter, and have a pruinose, white-grey disc with a thalline margin. Dirina arabica is a sister species to Dirina immersa, a sympatric species that can be distinguished from the former by its immersed ascomata.[2]
