Filsoniana scarlatina

Filsoniana scarlatina is a species of crustose lichen in the family Teloschistaceae. It grows on rock surfaces in south-eastern Australia and New Zealand, where its thin, pale thallus is often almost hidden beneath a dense covering of vivid scarlet apothecia (fruiting bodies). The species was first described from schist rock near Dunedin in 1941 by the Austrian lichenologist Alexander Zahlbruckner, who placed it in the large genus Caloplaca; it was transferred to Filsoniana in 2013 following studies that split Caloplaca into smaller, more natural groupings.