| [31894] Aphanocapsa tenuissima | Appellations de Taxon | 31894 |
| [31895] Hexatominae | Appellations de Taxon | 31895 |
| [31896] Hydraena dentipes | Appellations de Taxon | 31896 |
| [31897] Aphanizomenon yezoense | Appellations de Taxon | 31897 |
| [31898] Bostrychia moritziana | Appellations de Taxon | 31898 |
| [31899] Bostrychia | Appellations de Taxon | 31899 |
| [319] Leptocerus | Appellations de Taxon | 319 |
| [3190] Hydatophylax | Appellations de Taxon | 3190 |
| [31900] Carteria radiosa | Appellations de Taxon | 31900 |
| [31901] Cylindrocapsa conferta | Appellations de Taxon | 31901 |
| [31902] Cylindrocapsa | Appellations de Taxon | 31902 |
| [31903] Chrysochromulina parva | Appellations de Taxon | 31903 |
| [31905] Characium ornithocephalum | Appellations de Taxon | 31905 |
| [31906] Chlorogonium elegans | Appellations de Taxon | 31906 |
| [31907] Chlorogonium gracile | Appellations de Taxon | 31907 |
| [31908] Chlamydomonas bicocca | Appellations de Taxon | 31908 |
| [31909] Chroococcus aphanocapsoides | Appellations de Taxon | 31909 |
| [3191] Hydropsyche borealis | Appellations de Taxon | 3191 |
| [31910] Chroococcus varius | Appellations de Taxon | 31910 |
| [31911] Collodictyon | Appellations de Taxon | 31911 |
| [31912] Collodictyon triciliatum | Appellations de Taxon | 31912 |
| [31913] Closterium leibleinii | Appellations de Taxon | 31913 |
| [31914] Closterium ralfsii var. hybridum | Appellations de Taxon | 31914 |
| [31915] Coelosphaerium natans | Appellations de Taxon | 31915 |
| [31916] Cosmarium asphaerosporum | Appellations de Taxon | 31916 |
| [31917] Cosmarium jaoi | Appellations de Taxon | 31917 |
| [31918] Cosmarium ocellatum var. notatum | Appellations de Taxon | 31918 |
| [31919] Cosmarium ocellatum | Appellations de Taxon | 31919 |
| [3192] Meladema coriacea | Appellations de Taxon | 3192 |
| [31920] Cosmarium vogesiacum var. alpinum f. polonicum | Appellations de Taxon | 31920 |
| [31921] Cosmarium paucigranulatum | Appellations de Taxon | 31921 |
| [31922] Cosmarium sphyrelatum | Appellations de Taxon | 31922 |
| [31923] Cosmarium tinctum | Appellations de Taxon | 31923 |
| [31924] Coenocystis tapasteana | Appellations de Taxon | 31924 |
| [31925] Crucigenia lunaris | Appellations de Taxon | 31925 |
| [31926] Crucigenia smithii | Appellations de Taxon | 31926 |
| [31927] Cyanosarcina chroococcoides | Appellations de Taxon | 31927 |
| [31928] Dichothrix | Appellations de Taxon | 31928 |
| [31929] Desmodesmus abundans | Appellations de Taxon | 31929 |
| [3193] Micropterna | Appellations de Taxon | 3193 |
| [31930] Desmodesmus armatus | Appellations de Taxon | 31930 |
| [31931] Desmodesmus brasiliensis | Appellations de Taxon | 31931 |
| [31932] Desmodesmus costato-granulatus | Appellations de Taxon | 31932 |
| [31933] Desmodesmus communis | Appellations de Taxon | 31933 |
| [31934] Desmodesmus denticulatus | Appellations de Taxon | 31934 |
| [31935] Desmodesmus dispar | Appellations de Taxon | 31935 |
| [31936] Desmodesmus grahneisii | Appellations de Taxon | 31936 |
| [31937] Desmodesmus granulatus | Appellations de Taxon | 31937 |
| [31938] Desmodesmus hystrix | Appellations de Taxon | 31938 |
| [31939] Desmodesmus lefevrei | Appellations de Taxon | 31939 |