The INA is a card file and online reporting system maintained at the Silva Center for Phycological Documentation of the University Herbarium, University of California, Berkeley. It contains nearly 200,000 names of algae (in the broad sense). The BPU is a card file containing bibliographic references pertaining to algal taxonomy.
| Name | Author | Source | Citation | Year |
|---|---|---|---|---|
| Nitella acanthospora | M.T. Casanova & K.G. Karol | Australian Systematic Botany | 36: 324, fig. 1 | 2023 |
| Nitella boreali-australis | M.T. Casanova & K.G. Karol | Australian Systematic Botany | 36: 329, fig. 4 | 2023 |
| Nitella crocodylus | M.T. Casanova & K.G. Karol | Australian Systematic Botany | 36: 333, fig. 6 | 2023 |
| Nitella limosa | M.T. Casanova & K.G. Karol | Australian Systematic Botany | 36: 337, fig. 8 | 2023 |
| Nitella martinii | M.T. Casanova & K.G. Karol | Australian Systematic Botany | 36: 337, fig. 9 | 2023 |
| Nitella nitida | M.T. Casanova & K.G. Karol | Australian Systematic Botany | 36: 343, fig. 12 | 2023 |
| Nitella oollooensis | M.T. Casanova & K.G. Karol | Australian Systematic Botany | 36: 343, fig. 13 | 2023 |
| Nitella silicea | M.T. Casanova & K.G. Karol | Australian Systematic Botany | 36: 345, fig. 14 | 2023 |
| Nitella townsendii | M.T. Casanova in M.T. Casanova & K.G. Karol | Australian Systematic Botany | 36: 348, fig. 15 | 2023 |