Schaereria brunnea

Schaereria brunnea is a species of lichen in the family Schaereriaceae, first found in inland rainforests of British Columbia. This rare lichen forms very thin crusts made up of small pale brown patches, each topped with distinctive chocolate-brown barrel-shaped fruiting bodies that distinguish it from other tree-dwelling species in its genus. It was originally known from only three collections made between 1992 and 2007, all found growing on branches of western hemlock trees in ancient, misty forests over five centuries old. It has since been documented in Alaska. ...read more on Wikipedia.