parmeliaceous,a.Bot.|pɑːmiːlɪˈeɪʃəs| [f.mod.L. Parmēlia (f.Gr. πάρµη, L. parma small round shield) + -aceous.] Belonging or allied to the lichens of the genus Parmelia, repr. by the Common Yellow Wall-lichen. So parˈmelioida.[-oid], resembling the genus Parmelia (Cent.Dict. 1890).