Peltigera leucophlebia

Peltigera leucophlebia is a lichenized fungus in the family Peltigeraceae. It is commonly called Ruffled Freckled Pelt. This and other species in the genus contain a green algae in the genus Coccomyxa and also cyanobacteria in the genus Nostoc as symbionts.

The thallus of this lichen is gray or brown, but when it is wet, the bright green algae are clearly visible. The lower surface of the thallus is white.

This species is found in North America, Asia, and Europe. In North America, it is found in most of Alaska and Canada, the Great Lakes region, New England, the Rocky Mountains, and the Pacific coast.