| Baltisphaeridium pilosum Appendix A + | 20:30:29, 4 December 2016 + |
| Baltisphaeridium pilosum var. longispinosum Appendix A + | 00:00:14, 22 December 2016 + |
| Baltisphaeridium pilosum var. pilosum Appendix A + | 18:14:11, 2 December 2016 + |
| Baltisphaeridium piriferum Appendix A + | 00:00:15, 22 December 2016 + |
| Baltisphaeridium placacanthum Appendix A + | 00:00:15, 22 December 2016 + |
| Baltisphaeridium plicatum Appendix A + | 00:00:15, 22 December 2016 + |
| Baltisphaeridium polygonale Appendix A + | 00:00:16, 22 December 2016 + |
| Baltisphaeridium polyozum Appendix A + | 00:00:16, 22 December 2016 + |
| Baltisphaeridium polytrichum Appendix A + | 00:00:16, 22 December 2016 + |
| Baltisphaeridium pseudhystrichodinium Appendix A + | 00:00:17, 22 December 2016 + |
| Baltisphaeridium pseudhystrichodinium subsp. magnum Appendix A + | 00:00:17, 22 December 2016 + |
| Baltisphaeridium pseudhystrichodinium subsp. pseudhystrichodinium Appendix A + | 18:14:14, 2 December 2016 + |
| Baltisphaeridium pumile Appendix A + | 20:30:33, 4 December 2016 + |
| Baltisphaeridium quadriradiatum Appendix A + | 20:30:33, 4 December 2016 + |
| Baltisphaeridium ramuliferum Appendix A + | 00:00:18, 22 December 2016 + |
| Baltisphaeridium ramusculosum Appendix A + | 00:00:19, 22 December 2016 + |
| Baltisphaeridium ramusculosum var. macrocladum Appendix A + | 00:00:19, 22 December 2016 + |
| Baltisphaeridium ramusculosum var. ramusculosum Appendix A + | 00:00:19, 22 December 2016 + |
| Baltisphaeridium reginaldii Appendix A + | 00:00:20, 22 December 2016 + |
| Baltisphaeridium rehdense Appendix A + | 00:00:20, 22 December 2016 + |
| Baltisphaeridium reticuloidum Appendix A + | 00:00:20, 22 December 2016 + |
| Baltisphaeridium rhabdophorum Appendix A + | 20:30:36, 4 December 2016 + |
| Baltisphaeridium rigens Appendix A + | 20:30:36, 4 December 2016 + |
| Baltisphaeridium rjabininii Appendix A + | 20:30:36, 4 December 2016 + |
| Baltisphaeridium robustum Sannemann 1955 Appendix A + | 00:00:22, 22 December 2016 + |