| Porellaceae | |
Porella platyphylla subsp. baueri
| (Schiffn.) Vanden Berghen | Fl. Gén. Belgique, Bryoph. 1(3): 360 | 1957 |
| Porellaceae | |
Porella platyphylla var. baueri
| (Schiffn.) Jørg. | Bergens Mus. Skr. 16: 316 | 1934 |
| Porellaceae | |
Porella platyphylla var. major
| Lindb. | Utredn. Skand. Porella 340 | 1869 |
| Porellaceae | * |
Porella platyphylla var. major
| (Hook.) Cooke | Handb. Brit. Hepat. 60 | 1893 |
| Porellaceae | * |
Porella platyphylla var. major-convexula
| Pearson | List Canad. Hepat. 7 | 1890 |
| Porellaceae | |
Porella platyphylla fo. platyphylla
| | | |
| Porellaceae | |
Porella platyphylla subsp. platyphylla
| | | |
| Porellaceae | |
Porella platyphylla var. platyphylla
| | | |
| Porellaceae | |
Porella platyphylla var. platyphylloidea
| (Schwein.) Frye & L. Clark | Univ. Wash. Publ. Biol. 6(4): 723 | 1946 |
| Porellaceae | |
Porella platyphylla var. subcrenulata
| (C. Massal.) Piippo | J. Hattori Bot. Lab. 68: 134 | 1990 |
| Porellaceae | |
Porella platyphylla var. subsquarrosa
| Arnell | Skand. Fl. 2(a): 206 | 1928 |
| Porellaceae | ** |
Porella platyphylla var. subsquarrosa
| Damsh. | Ill. Fl. Nord. Liverw. Hornw. 591 | 2002 |
| Porellaceae | ** |
Porella platyphylla var. subsquarrosula
| S.W. Arnell | Ill. Moss Fl. Fennoscandia. I. Hepat. 246 | 1956 |
| Porellaceae | * |
Porella platyphylla fo. thuja
| (Dicks.) Pfeiff. | Fl. Niederhessen 2: 234 | 1855 |
| Porellaceae | * |
Porella platyphylla var. vulgaris
| Lindb. | Musci Scand. 3 | 1879 |