Convergent evolution of a symbiotic duet: The case of the lichen genus <i>Polychidium</i> (Peltigerales, Ascomycota)

Abstract

The independent development of similar dendroid thallus architecture in different fungal suborders with different photobionts represents a clear and previously overlooked example of convergent evolution in lichens. Our results also suggest a pattern of character state conservation, loss, and reversion in ascomatal ontogeny types, hitherto considered conserved traits useful for higher level ascomycete systematics.