Calvitimela uniseptata

Calvitimela uniseptata is a little-known species of crustose lichen in the family Tephromelataceae. Found in Antarctica, it was described as new to science in 2011. The lichen forms small, wart-like to coral-shaped growths that are grey to greenish-grey in colour, with stalked fruiting bodies up to about a millimetre across. It grows on basalt rock outcrops near a nutrient-enriched site, having been found near old bird nest remains at around 500 metres elevation....read more on Wikipedia.