| [12287] Cocconeis trachyderma | Appellations de Taxon | 12287 |
| [12288] Cymbellopsis terminis | Appellations de Taxon | 12288 |
| [12289] Ceratoneis fusiformis var. enodis | Appellations de Taxon | 12289 |
| [1229] Campylium | Appellations de Taxon | 1229 |
| [12290] Cymbella tumida var. fossilis | Appellations de Taxon | 12290 |
| [12291] Cymbella terrafuegiana | Appellations de Taxon | 12291 |
| [12293] Cymbella turgiduliformis | Appellations de Taxon | 12293 |
| [12294] Cymbella turgidula var. turgidula | Appellations de Taxon | 12294 |
| [12295] Cymbella towoetensis | Appellations de Taxon | 12295 |
| [12296] Cyclotella trichonidea var. parva | Appellations de Taxon | 12296 |
| [12297] Ctenophora pulchella var. lanceolata | Appellations de Taxon | 12297 |
| [12298] Cymbopleura transsilvanica | Appellations de Taxon | 12298 |
| [12299] Cyclotella tripartita | Appellations de Taxon | 12299 |
| [123] Capnioneura aptera | Appellations de Taxon | 123 |
| [1230] Campylium stellatum | Appellations de Taxon | 1230 |
| [12300] Cymbella sinensis | Appellations de Taxon | 12300 |
| [12301] Cocconeis scutellum var. obliqua | Appellations de Taxon | 12301 |
| [12302] Cyclotella socialis | Appellations de Taxon | 12302 |
| [12303] Cymatopleura solea abnormal form | Appellations de Taxon | 12303 |
| [12304] Cocconeis scutellum var. parva | Appellations de Taxon | 12304 |
| [12305] Cocconeis speciosa | Appellations de Taxon | 12305 |
| [12306] Caloneis speciosa | Appellations de Taxon | 12306 |
| [12307] Cymbella subaequalis f. krasskei | Appellations de Taxon | 12307 |
| [12308] Cymbopleura subaequalis var. pertruncata | Appellations de Taxon | 12308 |
| [12309] Cymbopleura subaequalis var. truncata | Appellations de Taxon | 12309 |
| [1231] Cratoneuron | Appellations de Taxon | 1231 |
| [12310] Cymbella subrostrata | Appellations de Taxon | 12310 |
| [12311] Cymbella sturii | Appellations de Taxon | 12311 |
| [12312] Cymbella subaspera var. salina | Appellations de Taxon | 12312 |
| [12313] Cymbella scotlandica | Appellations de Taxon | 12313 |
| [12314] Caloneis silicula var. tumida | Appellations de Taxon | 12314 |
| [12315] Cymbella strontiana | Appellations de Taxon | 12315 |
| [12316] Cymbella subtruncata var. similis | Appellations de Taxon | 12316 |
| [12317] Cymbella stuxbergii | Appellations de Taxon | 12317 |
| [12318] Cyclotella stylorum | Appellations de Taxon | 12318 |
| [12319] Cymbella subaspera var. subaspera | Appellations de Taxon | 12319 |
| [12320] Cymbella symmetrica | Appellations de Taxon | 12320 |
| [12321] Cymbellonitzschia szulczewskii | Appellations de Taxon | 12321 |
| [12322] Cymbella turgidula var. bengalensis | Appellations de Taxon | 12322 |
| [12323] Cymbella tumida var. borealis | Appellations de Taxon | 12323 |
| [12324] Cymbella turgidula var. bengalensis abnormal form | Appellations de Taxon | 12324 |
| [12325] Cyclotubicoalitus undatus | Appellations de Taxon | 12325 |
| [12326] Ceratoneis closterium | Appellations de Taxon | 12326 |
| [12327] Cyclostephanos tholiformis | Appellations de Taxon | 12327 |
| [12328] Cymbella ticinensis | Appellations de Taxon | 12328 |
| [12329] Corona temperei | Appellations de Taxon | 12329 |
| [1233] Cratoneuron filicinum | Appellations de Taxon | 1233 |
| [12330] Ceratoneis gracilis | Appellations de Taxon | 12330 |
| [12331] Cymbella turgidula var. nipponica | Appellations de Taxon | 12331 |
| [12332] Capartogramma allorgei | Appellations de Taxon | 12332 |