chapter  10
Ethnopharmacology of Lichens
Pages 9

The Lichen division is comprised of at least 8 orders, 45 families, and 6,000 species. Information on the edible and medicinal uses of lichens is scattered. Many lichens are known to have potent antibiotic properties, and many are edible. However, some lichens do contain toxic substances, so one should not graze randomly on them.