Rhizoplaca is a genus of lichenized fungi in the  family Lecanoraceae. Members of the genus are commonly called rimmed navel lichens because of their umbilicate growth form and lecanorine (rimmed with thallus-like tissue)apothecia, also rock-posy lichen and rockbright.

Species
, Species Fungorum (in the Catalogue of Life) accepts 17 species of Rhizoplaca:
 Rhizoplaca arbuscula 
 Rhizoplaca callichroa 
 Rhizoplaca glaucophana 
 Rhizoplaca haydenii 
 Rhizoplaca idahoensis 
 Rhizoplaca melanophthalma 
 Rhizoplaca nigromarginata 
 Rhizoplaca novomexicana 
 Rhizoplaca occulta 
 Rhizoplaca opaca 
 Rhizoplaca ouimetensis 
 Rhizoplaca pachyphylla 
 Rhizoplaca parilis 
 Rhizoplaca polymorpha 
 Rhizoplaca porteri 
 Rhizoplaca shushanii 
 Rhizoplaca weberi

References

Lecanoraceae
Lecanorales genera
Lichen genera
Taxa named by Friedrich Wilhelm Zopf
Taxa described in 1905