1. Hepaticae collected in South West Africa by Prof. Dr. O.H. Volk;Arnell;Mitteilungen der Botanischen Staatssammlung München,1957
2. A new species of Riella from Australia;Banwell;Transactions of the British Bryological Society,1951
3. A new terrestrial genus and species within the aquatic liverwort family Riellaceae (Sphaerocarpales) from Australia;Cargill;Polish Botanical Journal,2013
4. A new species of Riella (R. capensis) from South Africa;Cavers;Revue Bryologique,1903
5. Riella alatospora;Cholo,2010