Английская Википедия:Buellia peregrina
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Buellia peregrina is a species of saxicolous (rock-dwelling), crustose lichen in the family Caliciaceae.[1] It is found in the Namib desert in Namibia.
Taxonomy
The lichen was formally described as a new species in 2007 by lichenologists Frank Bungartz and Volkmar Wirth. The type specimen was collected between Swakopmund and Hentiesbai in the Namib (a coastal desert in Southern Africa). The species name originates from the Latin word peregrinus, ("foreign"). This signifies that all specimens were discovered on allochthonous limestone, meaning stones not originally part of the sediment layer in that specific region. It is the only species in genus Buellia that grows euendolithically, i.e., with its thallus entirely within its rock substratum.[2]
Description
The thallus of this crustose lichen has a pale beige to rose surface that changes the colour of the white limestone it inhabits. A Шаблон:Lichengloss is present but barely distinguishable from the Шаблон:Lichengloss. The apothecia are Шаблон:Lichengloss and initially immersed in cavities; they typically measure 0.2–0.4 mm in diameter. They emerge at maturity with a black, plane, and epruinose to faintly pruinose Шаблон:Lichengloss that becomes convex.[2]
The Шаблон:Lichengloss of the apothecia is thin and black, with a narrow, poorly differentiated Шаблон:Lichengloss containing deep blue and reddish-brown pigmentation. The hymenium is hyaline, and the Шаблон:Lichengloss are simple to moderately branched with a deep blue pigmented cap. The Шаблон:Lichengloss is deep blue (a distinctive Шаблон:Lichengloss of this species), while the Шаблон:Lichengloss is reddish-brown. The asci are 8-spored and Шаблон:Lichengloss, with oblong to ellipsoid, one-septate Шаблон:Lichengloss that do not display any ornamentation. Шаблон:Lichengloss were not observed in this lichen. Collected specimens did not contain any detectable lichen products.[2]
See also
References