Taxon - Odkazy a literatura
Piippo, S. (1996): Notes on Chinese Geocalycaceae (Hepaticae). 1., Ann. Bot. Fennici 33: 45–49. [jako Heteroscyphus planus]
Söderström L. et al. (2016): World checklist of hornworts and liverworts, PhytoKeys 59: 1–828 [jako Heteroscyphus planus (Mitt.) Schiffn.]Datum citace: 1. duben 2020