| [12428] Decussata hexagona | Appellations de Taxon | 12428 |
| [12429] Diatoma hyemalis var. hyemalis | Appellations de Taxon | 12429 |
| [1243] Leptodictyum | Appellations de Taxon | 1243 |
| [12430] Diatoma hyemale var. maximum | Appellations de Taxon | 12430 |
| [12431] Desikaneis howellii | Appellations de Taxon | 12431 |
| [12432] Denticulopsis hyalina | Appellations de Taxon | 12432 |
| [12433] Diadesmis arcuata | Appellations de Taxon | 12433 |
| [12434] Diploneis cynthia | Appellations de Taxon | 12434 |
| [12436] Diadesmis arctica | Appellations de Taxon | 12436 |
| [12437] Diadesmis costei | Appellations de Taxon | 12437 |
| [12438] Diatoma densicostata | Appellations de Taxon | 12438 |
| [12439] Delicata delicatula var. angusta | Appellations de Taxon | 12439 |
| [1244] Leptodictyum riparium | Appellations de Taxon | 1244 |
| [12440] Diploneis decipiens | Appellations de Taxon | 12440 |
| [12441] Delicata delicatula var. delicatula | Appellations de Taxon | 12441 |
| [12442] Diadesmis discordabilis | Appellations de Taxon | 12442 |
| [12443] Diadesmis simplex | Appellations de Taxon | 12443 |
| [12444] Diadesmis subtropica | Appellations de Taxon | 12444 |
| [12445] Diatoma ehrenbergii var. actinastroides | Appellations de Taxon | 12445 |
| [12446] Diatoma ehrenbergii f. capitulata | Appellations de Taxon | 12446 |
| [12447] Delphineis minutissima | Appellations de Taxon | 12447 |
| [12448] Denticula mesolepta | Appellations de Taxon | 12448 |
| [12449] Denticula elegans var. ocellata | Appellations de Taxon | 12449 |
| [1245] Platyhypnidium | Appellations de Taxon | 1245 |
| [12450] Delphineis ovata | Appellations de Taxon | 12450 |
| [12451] Diploneis fontanella | Appellations de Taxon | 12451 |
| [12452] Diadesmis fukushimae | Appellations de Taxon | 12452 |
| [12453] Diploneis fusca | Appellations de Taxon | 12453 |
| [12454] Delicata gadjiana | Appellations de Taxon | 12454 |
| [12455] Didymosphenia geminata var. baikalensis | Appellations de Taxon | 12455 |
| [12456] Diploneis graeffii | Appellations de Taxon | 12456 |
| [12457] Diommatetras grossa | Appellations de Taxon | 12457 |
| [12458] Didymosphenia geminata var. stricta f. baikalensis | Appellations de Taxon | 12458 |
| [12459] Didymosphenia geminata var. sibirica f. curvata | Appellations de Taxon | 12459 |
| [12460] Didymosphenia geminata morphotyp subcapitata | Appellations de Taxon | 12460 |
| [12461] Discostella guslyakovyi | Appellations de Taxon | 12461 |
| [12462] Diprora haenaensis | Appellations de Taxon | 12462 |
| [12463] Diplomenora cocconeiformis | Appellations de Taxon | 12463 |
| [12464] Diploneis incurvata var. dubia | Appellations de Taxon | 12464 |
| [12465] Diploneis dimorpha | Appellations de Taxon | 12465 |
| [12466] Dimeregramma dubium | Appellations de Taxon | 12466 |
| [12467] Discostella elentarii | Appellations de Taxon | 12467 |
| [12468] Diploneis fontium | Appellations de Taxon | 12468 |
| [12469] Didymosphenia pumila | Appellations de Taxon | 12469 |
| [1247] Platyhypnidium rusciforme | Appellations de Taxon | 1247 |
| [12470] Diadesmis irata | Appellations de Taxon | 12470 |
| [12471] Delphineis ischaboensis | Appellations de Taxon | 12471 |
| [12472] Diploneis incurvata var. stricta | Appellations de Taxon | 12472 |
| [12473] Delicata krammeri | Appellations de Taxon | 12473 |
| [12474] Diadesmis lacunosa | Appellations de Taxon | 12474 |