Taxon - Odkazy a literatura
Söderström L. et al. (2016): World checklist of hornworts and liverworts, PhytoKeys 59: 1–828 [jako Riccia rhenana var. violacea M.F.Boiko]Datum citace: 1. duben 2020
Söderström L. et al. (2016): World checklist of hornworts and liverworts, PhytoKeys 59: 1–828 [jako Riccia rhenana var. violacea M.F.Boiko]