Peltigera leucophlebia is a lichenized fungus in the family Peltigeraceae.

[1] The thallus of this lichen is gray or brown, but when it is wet, the bright green algae are clearly visible.

[2] 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.

[5] Peltigera leucophlebia is known to contain tenuiorin, methylgyrophorate and gyrophoric acid.

The thallus turns an ochre colour when performing during a K spot test.