Gyalolechia key
| 1. | Thallus placodioid, marginal lobes clearly differentiated, inner part of thallus remaining ±intact but with the surface fragmenting to produce schizidia; ascospores 9-12 x 3-5-5 µm, ellipsoidal to pyriform | Gyalolechia fulgens |
| 1. | Thallus warty-scaly, composed of dispersed groups and islands of poorly defined areoles, marginal lobes not or only weakly differentiated; ascospores 8-12 x 3-5-6 µm, mostly broadly ellipsoidal | Gyalolechia bracteata |