Eremothecella helicella

Eremothecella helicella is a species of lichen in the family Arthoniaceae. Found in Brazil, it was described as a new species in 2014. It is the first bark-dwelling member of its genus, as all other known species of Eremothecella grow exclusively on leaves. The lichen forms a glossy green crust on tree bark and is distinguished by its unusual corkscrew-shaped asexual spores, a feature rarely seen among lichen-forming fungi. Known only from primary rainforest sites around Porto Velho in Rondônia state, this species has been found growing on smooth-barked trees at low elevations....read more on Wikipedia.