| Baltisphaeridium robustum subsp. fissum Appendix A + | 00:00:22, 22 December 2016 + |
| Baltisphaeridium saturnium Appendix A + | 00:00:22, 22 December 2016 + |
| Baltisphaeridium seminudum Appendix A + | 00:00:23, 22 December 2016 + |
| Baltisphaeridium septatum Appendix A + | 00:00:23, 22 December 2016 + |
| Baltisphaeridium setigerfurcatum Appendix A + | 00:00:23, 22 December 2016 + |
| Baltisphaeridium severinii Appendix A + | 00:00:24, 22 December 2016 + |
| Baltisphaeridium sexradiatum Appendix A + | 20:30:39, 4 December 2016 + |
| Baltisphaeridium spiciferum Appendix A + | 00:00:24, 22 December 2016 + |
| Baltisphaeridium spiculatum Appendix A + | 20:30:40, 4 December 2016 + |
| Baltisphaeridium spinescens Appendix A + | 20:30:40, 4 December 2016 + |
| Baltisphaeridium spinosum White 1842 Appendix A + | 20:30:41, 4 December 2016 + |
| Baltisphaeridium spinosum var. deflandrei Appendix A + | 00:00:26, 22 December 2016 + |
| Baltisphaeridium spinosum var. spinosum Appendix A + | 18:14:23, 2 December 2016 + |
| Baltisphaeridium spiralisetum Appendix A + | 20:30:42, 4 December 2016 + |
| Baltisphaeridium stellaeforme Appendix A + | 20:30:42, 4 December 2016 + |
| Baltisphaeridium stimuliferum Appendix A + | 00:00:27, 22 December 2016 + |
| Baltisphaeridium striatoconum Appendix A + | 00:00:27, 22 December 2016 + |
| Baltisphaeridium striolatum Appendix A + | 00:00:28, 22 December 2016 + |
| Baltisphaeridium sylhetii Appendix A + | 20:30:43, 4 December 2016 + |
| Baltisphaeridium tiara Appendix A + | 00:00:28, 22 December 2016 + |
| Baltisphaeridium toyetae Appendix A + | 00:00:29, 22 December 2016 + |
| Baltisphaeridium triangulatum Appendix A + | 00:00:29, 22 December 2016 + |
| Baltisphaeridium tribuliferum Appendix A + | 20:30:45, 4 December 2016 + |
| Baltisphaeridium tridactylites Appendix A + | 00:00:30, 22 December 2016 + |
| Baltisphaeridium trifurcatum Appendix A + | 00:00:30, 22 December 2016 + |