| [1487] Carex pulicaris | Appellations de Taxon | 1487 |
| [14870] Navicula abrupta var. densestriata | Appellations de Taxon | 14870 |
| [14871] Navicula adamantiformis | Appellations de Taxon | 14871 |
| [14872] Nitzschia accedens var. chilensis | Appellations de Taxon | 14872 |
| [14873] Navicula adakensis | Appellations de Taxon | 14873 |
| [14874] Nitzschia andicola | Appellations de Taxon | 14874 |
| [14875] Navicula adamsii | Appellations de Taxon | 14875 |
| [14876] Nitzschia admissoides | Appellations de Taxon | 14876 |
| [14877] Nitzschia angustata var. curta | Appellations de Taxon | 14877 |
| [14878] Navicula aggesta | Appellations de Taxon | 14878 |
| [14879] Navicula agnita | Appellations de Taxon | 14879 |
| [1488] Carex remota | Appellations de Taxon | 1488 |
| [14880] Navicula agatkae | Appellations de Taxon | 14880 |
| [14881] Navicula agma | Appellations de Taxon | 14881 |
| [14882] Nitzschia agnita | Appellations de Taxon | 14882 |
| [14883] Neidium amphigomphus | Appellations de Taxon | 14883 |
| [14884] Neidium amphiantlaticum | Appellations de Taxon | 14884 |
| [14885] Nitzschia amphioxoides | Appellations de Taxon | 14885 |
| [14886] Navicula inclementis | Appellations de Taxon | 14886 |
| [14887] Navicula adminii | Appellations de Taxon | 14887 |
| [14888] Navicula incoacta | Appellations de Taxon | 14888 |
| [14889] Navicula ajajensis | Appellations de Taxon | 14889 |
| [1489] Carex riparia | Appellations de Taxon | 1489 |
| [14890] Nitzschia aketechiensis | Appellations de Taxon | 14890 |
| [14891] Navicula alaskana | Appellations de Taxon | 14891 |
| [14892] Navicula americana var. lignitica | Appellations de Taxon | 14892 |
| [14893] Navicula ammophila | Appellations de Taxon | 14893 |
| [14894] Navicula amoenaeformis | Appellations de Taxon | 14894 |
| [14896] Navicula amphibola f.rectangularis | Appellations de Taxon | 14896 |
| [14897] Nitzschia amisaensis | Appellations de Taxon | 14897 |
| [14898] Navicula americana var. moesta | Appellations de Taxon | 14898 |
| [14899] Navicula angustissima | Appellations de Taxon | 14899 |
| [149] Isoperla viridinervis | Appellations de Taxon | 149 |
| [1490] Carex rostrata | Appellations de Taxon | 1490 |
| [14900] Navicula agulhasica | Appellations de Taxon | 14900 |
| [14901] Nitzschia amphicephala | Appellations de Taxon | 14901 |
| [14902] Navicula ahmedabadensis | Appellations de Taxon | 14902 |
| [14903] Navicula athenae | Appellations de Taxon | 14903 |
| [14904] Nitzschia amphiprora | Appellations de Taxon | 14904 |
| [14905] Navicula anthracis | Appellations de Taxon | 14905 |
| [14906] Navicula albanica | Appellations de Taxon | 14906 |
| [14907] Navicula alpha | Appellations de Taxon | 14907 |
| [14908] Navicula algida | Appellations de Taxon | 14908 |
| [14909] Navicula alternans | Appellations de Taxon | 14909 |
| [1491] Carex vesicaria | Appellations de Taxon | 1491 |
| [14910] Navicula amabilis | Appellations de Taxon | 14910 |
| [14911] Neidium amphigomphus | Appellations de Taxon | 14911 |
| [14912] Nitzschia amundonii | Appellations de Taxon | 14912 |
| [14913] Navicula my | Appellations de Taxon | 14913 |
| [14914] Navicula anca | Appellations de Taxon | 14914 |