| Acinetospora Bornet, 1891 |
| Acinetospora crinita (Carmich.) Sauv., 1899 |
| Acinetospora pusilla (Harv.) Sauv., 1898 |
| Acinetosporaceae Feldmann, 1937 |
| Feldmannia Hamel, 1939 |
| Feldmannia cylindrica (Saunders) Hollenberg & I.A. Abbott, 1966 |
| Feldmannia duchassaingiana (Grunow) Aisha & Shameel, 2011 |
| Feldmannia elachistaeformis (Heydr.) P.H. Hô, 1969 |
| Feldmannia globifera (Kütz.) G. Hamel, 1939 |
| Feldmannia hemispherica (Saunders) Hollenberg, 1971 |
| Feldmannia indica (Sond.) Womersley & Bailey, 1970 |
| Feldmannia irregularis (Kütz.) Hamel, 1939 |
| Feldmannia mitchelliae (Harv.) H.S. Kim, 2010 |
| Feldmannia padinae (Buffham) Hamel, 1939 |
| Feldmannia paradoxa (Mont.) G. Hamel, 1939 |
| Feldmannia paradoxa var. cylindrica (Saunders) H.S. Kim & I.K. Lee, 1994 |
| Feldmannia rallsiae (Vickers) G. Hamel, 1939 |
| Feldmannia simplex (P. Crouan & H. Crouan) G. Hamel, 1939 |
| Giffordia Batters, 1893 |
| Giffordia duchassaingiana (Grunow) W.R. Taylor, 1960 |