| Hypnum sodale Sull.
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Sullivant, W. S. (1854). [Part 1]. In W. S. Sullivant, Notices of some new species of mosses, from the Pacific Islands, in the collection of the United States Exploring Expedition, under Captain Wilkes. (pp. 1–12). Metcalf and Company. https://www.tropicos.org/reference/100052797 | 
                
                
                
                
            
                
                    | Hypnum molluscoides Sull.
                        heterotypic synonym |  | 
                
                    
                        | Gepubliceerd in:Sullivant, W. S. (1854). [Part 1]. In W. S. Sullivant, Notices of some new species of mosses, from the Pacific Islands, in the collection of the United States Exploring Expedition, under Captain Wilkes. (pp. 1–12). Metcalf and Company. https://www.tropicos.org/reference/100052797 | 
                
                
                
                
            
                
                    | Hypnum circinulatum Schimp.
                        synoniem |  | 
                
                
                
                
            
                
                    | Hypnum calpaecarpum Ångstr.
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Ångström, J. (1873). Förteckning och beskrifning öfver mossor, samlade af N. J. Andersson under Fregatten Eugenies verldsomsegling åren 1851--1853. IV--VIII. Öfversigt Af Kongl. Vetenskaps-Akademiens Förhandlingar, 30(5), 113–151. https://www.tropicos.org/reference/9009551 | 
                
                
                
                
            
                
                    | Ectropothecium papillosulum Thér.
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Thériot, I. (1921). Considérations sur la flore bryologique de la Nouvelle-Calédonie et diagnoses d’espèces nouvelles. Revue Bryologique, 48, 54–59. https://www.tropicos.org/reference/9030470 | 
                
                
                
                
            
                
                    | Ectropothecium cupressinatulum Broth. & Paris
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Oefvers. Förh. Finska Vetensk.-Soc., 53A (11): 34, 34, 1911 | 
                
                
                
                
            
                
                    | Ectropothecium circinnatulum Thér.
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Thériot, I. (1910). In Diagnoses d’Espèces et de Variétés Nouvelles de Mousses, 8e Article. Imp. G. D. Quoist. https://www.tropicos.org/reference/9010660 | 
                
                
                
                
            
                
                    | Cupressina sodalis (Sull.) Müll.Hal.
                        synoniem |  |