This is really just out of curiosity and I know there are lichen-lovers out there!
My introduction and exposure to lichens has so far been to just look for something to iNat during winter times when insects are less active. Though I have recently learnt that lichens are a composite organism consisting of a symbiosis between a fungus and an alga or a fungus and a cyanobacteria (and I guess a combo too).
So do lichen binomials (eg. Flavoparmelia caperata) refer to the composite organism? If yes, does that “break” the many “unofficial rules” of what defines a species? And do the fungus, alga and/or cyanobacteria that make up the lichen have their own individual binomials as well? Or are they do dependent on each other that its just better to bundle them all in one?
Thanks for the answers and the potential discussion.