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 |
|---|---|---|---|---|
| Closterium abruptum f. nilssonii | (Borge) A.J. Brook & D.B. Williamson | A monograph on some British desmids: | 197 | 2010 |
| Closterium angustatum f. sculptum | (Raciborski) A.J. Brook & D.B. Williamson | A monograph on some British desmids: | 204 | 2010 |
| Closterium hibernicum | (W. West) A.J. Brook & D.B. Williamson | A monograph on some British desmids: | 309 | 2010 |
| Closterium jenneri var. curvatissimum | (W. West & G.S. West) A.J. Brook & D.B. Williamson | A monograph on some British desmids: | 314 | 2010 |
| Closterium juncidum f. robustius | (Lobik) A.J. Brook & D.B. Williamson | A monograph on some British desmids: | 223 | 2010 |
| Closterium lunula var. giganteum | (Nordstedt) A.J. Brook & D.B. Williamson | A monograph on some British desmids: | 267 | 2010 |
| Closterium nylandicum | (Grönblad) A.J. Brook & D.B. Williamson | A monograph on some British desmids: | 237 | 2010 |
| MESOTAENIOIDEAE | A.J. Brook & D.B. Williamson | A monograph on some British desmids: | 23 | 2010 |
| Roya pseudoclosterium f. minor | A.J. Brook & D.B. Williamson | A monograph on some British desmids: | 103 | 2010 |