Parmotrema tinctorum, also known as the palm ruffle lichen, belongs to the Parmotrema genus. It is listed as secure by the Nature Conservatory.
This lichen grows to around 3âÂÂ30 cm in diameter, with broad dull smooth slightly shiny gray lobes that are 10âÂÂ20 mm wide. The underside is black with naked brown areas, and a central collection of simple rhizines.
This lichen has global distribution, with a majority of samples being located in North America and Europe.
Compounds derived from Parmotrema tinctorum have been found to have anti-cancer properties.
Parmotrema tinctorum has been identified and used as a candidate for monitoring air pollution.