what group do lichens belong to
20% (one in five) of fungal species live in lichens. Lichen fungi belong to several different groups of fungi. Most common (over 40%) are Ascomycetes, which produce spores in a sac-shaped container, the ascus.Only a few types of alga occur within lichens; these algae also have their own names.ichen fungi belong to several different groups of fungi. Most common (over 40%) are Ascomycetes, which produce spores in a sac-shaped container, the ascus. Only a few types of alga occur within lichens; these algae also have their own names.