| Biremis D.G. Mann & E.J. Cox, 1990 |
| Biremis ambigua (Cleve) D.G. Mann, 1990 |
| Biremis circumtexta (Meister ex Hust.) Lange-Bert. & Witkowski, 2000 |
| Biremis lucens (Hust.) K. Sabbe, A. Witkowski, & W. Vyverman, 1995 |
| Biremis ridicula (Giffen) D.G. Mann, 1990 |
| Lacustriella Lange-Bert., Kulikovskiy & Metzeltin, 2012 |
| Lacustriella lacustris (W. Greg.) Lange-Bert. & Kulikovskiy, 2012 |
| Muelleria (Freng.) Freng., 1945 |
| Muelleria gibbula (Cleve) Spaulding & F.R. Stoermer, 1997 |
| Neidiaceae Mereschk., 1903 |
| Neidiomorpha Lange-Bert. & Cantonati, 2010 |
| Neidiomorpha binodis (Ehrenb.) Cantonati, Lange-Bert. & N. Angeli, 2010 |
| Neidiopsis Lange-Bert. & Metzeltin, 1999 |
| Neidiopsis weilandii Bahls, 2014 |
| Neidium Pfitzer, 1871 |
| Neidium affine (Ehrenb.) Pfitzer, 1871 |
| Neidium affine var. amphirhynchus (Ehrenb.) Cleve, 1894 |
| Neidium affine var. humeris Reimer, 1959 |
| Neidium alpinum Hust., 1943 |
| Neidium ampliatum (Ehrenb.) Krammer, 1985 |