| Splachnaceae | ** |
Tetraplodon mnioides var. abbreviatus
| Paris | Index Bryol. (ed. 2) 4: 317 | 1905 |
| Splachnaceae | |
Tetraplodon mnioides var. adamsianus
| (Hornsch.) Müll. Hal. | Syn. Musc. Frond. 1: 130 | 1848 |
| Splachnaceae | |
Tetraplodon mnioides var. brevicollis
| Kindb. | Ottawa Naturalist 23: 142 | 1909 |
| Splachnaceae | |
Tetraplodon mnioides subsp. breweri
| Kindb. | Ottawa Naturalist 23: 141 | 1909 |
| Splachnaceae | * |
Tetraplodon mnioides var. breweri
| Bruch & Schimp. ex Lindb. | Revis. Crit. Icon. 24 | 1871 |
| Splachnaceae | |
Tetraplodon mnioides fo. brewerianus
| (Hedw.) Sayre | Moss Fl. N. Amer. 2: 98 | 1935 |
| Splachnaceae | * |
Tetraplodon mnioides var. brewerianus
| (Hedw.) Bruch & Schimp. | Bryol. Eur. 3: 215 (fasc. 23–24 Mon. Splachnum 5) | 1844 |
| Splachnaceae | ** |
Tetraplodon mnioides var. canescens
| (P. Beauv.) Paris | Index Bryol. (ed. 2) 4: 316 | 1905 |
| Splachnaceae | |
Tetraplodon mnioides var. cavifolius
| Schimp. | Syn. Musc. Eur. 304 | 1860 |
| Splachnaceae | |
Tetraplodon mnioides fo. compactior
| Besch. | Ann. Sci. Nat., Bot., sér. 7, 15: 60 | 1892 |
| Splachnaceae | |
Tetraplodon mnioides var. fastigiatus
| (Wahlenb.) Paris | Index Bryol. 1226 | 1898 |
| Splachnaceae | |
Tetraplodon mnioides var. longisetus
| (C. Gao) X.L. Bai | Fl. Bryophyt. Intramongol. 259 | 1997 |
| Splachnaceae | |
Tetraplodon mnioides fo. mnioides
| | | |
| Splachnaceae | |
Tetraplodon mnioides subsp. mnioides
| | | |
| Splachnaceae | |
Tetraplodon mnioides var. mnioides
| | | |
| Splachnaceae | |
Tetraplodon mnioides subsp. pallidus
| (I. Hagen) Kindb. | Skand. Bladmossfl. (Kindberg) 88 | 1903 |
| Splachnaceae | |
Tetraplodon mnioides var. paradoxus
| (R. Br.) C.E.O. Jensen | Skand. Bladmossfl. 181 | 1939 |
| Splachnaceae | * |
Tetraplodon mnioides var. urceolatus
| (Hedw.) Steere | Bot. Canad. E. Arctic 2: 417 | 1947 |
| Splachnaceae | ** |
Tetraplodon mnioides var. urceolatus
| (Hedw.) H.A. Crum | Bryologist 72: 246 | 1969 |