| [12333] Cymbella tropica | Appellations de Taxon | 12333 |
| [12334] Centric Diatoms | Appellations de Taxon | 12334 |
| [12335] Chamaepinnularia truncata | Appellations de Taxon | 12335 |
| [12336] Cymbella tasmaniensis | Appellations de Taxon | 12336 |
| [12337] Cymbopleura tsoneka | Appellations de Taxon | 12337 |
| [12338] Cymbella transsilvanica | Appellations de Taxon | 12338 |
| [12339] Cymbella tropica var. tenuipunctata | Appellations de Taxon | 12339 |
| [1234] Drepanocladus | Appellations de Taxon | 1234 |
| [12340] Corona tetragona | Appellations de Taxon | 12340 |
| [12342] Cymbella ulensis | Appellations de Taxon | 12342 |
| [12343] Cymbella ventricosa var. acuminata | Appellations de Taxon | 12343 |
| [12344] Caloneis ventricosa var. alpina | Appellations de Taxon | 12344 |
| [12345] Cavinula lacustris var. apiculata | Appellations de Taxon | 12345 |
| [12346] Caloneis vasileyevae | Appellations de Taxon | 12346 |
| [12347] Craticula vixvisibilis var. distinctior | Appellations de Taxon | 12347 |
| [12348] Cymbella volkii | Appellations de Taxon | 12348 |
| [12349] Cavinula lacustris var. parallela | Appellations de Taxon | 12349 |
| [12350] Cymbella vulgata var. plitvicensis | Appellations de Taxon | 12350 |
| [12351] Cavinula pusio | Appellations de Taxon | 12351 |
| [12352] Cavinula scutelloides | Appellations de Taxon | 12352 |
| [12353] Caloneis ventricosa var. subundulata | Appellations de Taxon | 12353 |
| [12354] Chaetoceros tortissimus | Appellations de Taxon | 12354 |
| [12355] Cyclotella tuberculata | Appellations de Taxon | 12355 |
| [12356] Cymbella tumida abnormal form | Appellations de Taxon | 12356 |
| [12357] Cymbella turgidula var. venezolana | Appellations de Taxon | 12357 |
| [12358] Caloneis undulatiformis | Appellations de Taxon | 12358 |
| [1236] Hygroamblystegium | Appellations de Taxon | 1236 |
| [12360] Caloneis undulata | Appellations de Taxon | 12360 |
| [12361] Cymbella ventricosa var. groenlandica | Appellations de Taxon | 12361 |
| [12362] Cavinula heterostauron var. rostrata | Appellations de Taxon | 12362 |
| [12363] Craticula vixnegligenda | Appellations de Taxon | 12363 |
| [12364] Cavinula lapidosa | Appellations de Taxon | 12364 |
| [12365] Caloneis ventricosa var. minuta | Appellations de Taxon | 12365 |
| [12366] Cavinula mollicula | Appellations de Taxon | 12366 |
| [12367] Cavinula thoroddsenii | Appellations de Taxon | 12367 |
| [12368] Cyclotella vorticosa | Appellations de Taxon | 12368 |
| [12369] Cocconeis vetusta | Appellations de Taxon | 12369 |
| [1237] Hygroamblystegium fluviatile | Appellations de Taxon | 1237 |
| [12370] Cymbella vulgata var. vulgata | Appellations de Taxon | 12370 |
| [12371] Craticula vixvisibilis | Appellations de Taxon | 12371 |
| [12372] Cymbella yabe | Appellations de Taxon | 12372 |
| [12373] Cyclotella affinis | Appellations de Taxon | 12373 |
| [12374] Cymbella alpestris | Appellations de Taxon | 12374 |
| [12375] Cymbella amoyensis | Appellations de Taxon | 12375 |
| [12376] Cyclotella astraea | Appellations de Taxon | 12376 |
| [12377] Cyclotella baicalensis | Appellations de Taxon | 12377 |
| [12378] Cymbopleura lata var. lata | Appellations de Taxon | 12378 |
| [12379] Cymbella halophila | Appellations de Taxon | 12379 |
| [1238] Hygroamblistegium formianum | Appellations de Taxon | 1238 |
| [12380] Cymbella hofmanniae | Appellations de Taxon | 12380 |