Taxon - Odkazy a literatura
Söderström L. et al. (2016): World checklist of hornworts and liverworts, PhytoKeys 59: 1–828 [jako Chiloscyphus pallescens var. fragilis (Roth) Müll.Frib.]Datum citace: 3. duben 2020
Söderström L. et al. (2016): World checklist of hornworts and liverworts, PhytoKeys 59: 1–828 [jako Chiloscyphus pallescens var. fragilis (Roth) Müll.Frib.]