in Henssen & Jørgensen, Lichenologist 22, 2: 142 (1990). Basionym: Omphalaria pyrenoides Nyl., (1858). Type locality: USA, Texas, ad saxa calcarea recentiores formationis, Tuckerman (H-NYL 42666 - lectotype).
Basionym: Omphalaria pyrenoides Nyl., (1858).
Type locality: USA, Texas, ad saxa calcarea recentiores formationis, Tuckerman (H-NYL 42666 - lectotype).