Parmotrema circinatum

Summary

Parmotrema circinatum is a species of foliose lichen in the family Parmeliaceae. It grows on twigs in open coastal woodland near Mackay in eastern Queensland, Australia. The lichen forms a greyish, leafy crust up to 8 cm across with distinctive coiled, densely branched lobes along its margins that lack the hair-like fringes found in related species. It is known only from its original collection site, roughly 100 metres from the shoreline.