Iceland moss (Iceland Moss L.) is a species of lichen-dwelling and belongs to the Parmeliaceae family. It’s typical of mountain areas and a characteristic of lava fields in Iceland, which is probably where it get its common name. Lichens are plants with a thallus that is a made from an association between a mushroom and seasweed, from which a symbiosis takes place, or rather, the existence of one is linked to the other making it mutually beneficial for each. Iceland moss is used in herbal medicine because of its composition of usnic acid and mucilages. It soothes the oropharyngeal mucosa and improves voice tone. It also supports the immune system.