Samantha Fernández-Brime

Lichenostigma rupicolae is a species of lichenicolous (lichen-dwelling) fungus in the family Phaeococcomycetaceae. It was described in 2010 from specimens of Pertusaria rupicola, its host species. This parasitic fungus appears as soot-black patches on its host lichen, consisting of microscopic cord-like structures that radiate outward from a centre and eventually form small black cushions containing spores. Found in Mediterranean Europe and Turkey, it appears to be strictly host-specific to the crustose lichen P. rupicola and causes no obvious damage beyond creating the characteristic

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Myriospora signyensis is a crustose lichen in the family Acarosporaceae, known only from Signy Island (South Orkney Islands, Antarctica). It is characterised by a thallus that becomes distinctly lobed and often orange-red or rust-coloured at the margins, and by large, sessile apothecia with a prominent, raised rim. Molecular phylogenetics analyses place it as a well-supported sister to Myriospora scabrida, although it never attains the green-tinged colouration of that species and instead lacks the thick pigmented epinecral layer common in M. scabrida.

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