Chapsa rubropulveracea

Chapsa rubropulveracea is a species of corticolous (bark-dwelling) crustose lichen in the family Graphidaceae. This distinctive lichen is easily recognized by its flour-like white surface and bright red powdery coating on its small reproductive discs. It was originally collected in 1972 by the American lichenologist Mason Hale on the Caribbean island of Dominica, but was not formally described and named until 2011. The species is currently known only from its original discovery site in humid mountain forests at about 400 metres elevation, where it grows on the bark of hardwood trees....read more on Wikipedia.